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X-WR-CALDESC:Събития за Institute of Mathematics and Informatics
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250703T143000
DTEND;TZID=Europe/Sofia:20250703T160000
DTSTAMP:20260405T051717
CREATED:20250629T234532Z
LAST-MODIFIED:20250629T234532Z
UID:17976-1751553000-1751558400@math.bas.bg
SUMMARY:Семинар "Математически основи на информатиката"
DESCRIPTION:Семинарът по \nМАТЕМАТИЧЕСКИ ОСНОВИ НА ИНФОРМАТИКАТА \nорганизиран от \nСекция „Математически основи на информатиката“ към ИМИ – БАН и \nФакултет „Математика и информатика“ – ВТУ\, \nВи кани на поредната сбирка на 3 юли 2025 г. от 14:30 часа в зала 508 на учебен корпус 4 на ВТУ\, на която \nСветослава Минкова\nмагистърска програма\n„Математически структури в информационната сигурност“\nФМИ\, Великотърновски университет \nще изнесе доклад на тема: \nWeisfeiler-Leman алгоритъм и инварианти за изоморфизъм на графи
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8-%d0%be%d1%81%d0%bd%d0%be%d0%b2%d0%b8-%d0%bd%d0%b0-%d0%b8%d0%bd%d1%84%d0%be-5/
LOCATION:Великотърновски университет\, ул. "Теодосий Търновски" № 2\, Велико Търново\, 5005\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250706
DTEND;VALUE=DATE:20250727
DTSTAMP:20260405T051717
CREATED:20250703T141856Z
LAST-MODIFIED:20250704T130122Z
UID:17985-1751760000-1753574399@math.bas.bg
SUMMARY:25. Лятна изследователска школа по математика и информатика на УчИМИ
DESCRIPTION:25. Лятна изследователска школа по математика и информатика (ЛИШ’25) \nОт 6 до 26 юли в Творческия дом на БАН във Варна ще се проведе 25. Лятна изследователска школа по математика и информатика (ЛИШ’25). Тя е организирана от Ученическия институт по математика и информатика (УчИМИ) и тази година ще отбележи своето двадесет и пето издание. \nУчИМИ е учреден през 2000 г. и оттогава неизменно подкрепя ученици с изявени интереси в областта на математиката\, информатиката и информационните технологии в техните първи стъпки в науката. ЛИШ е школа\, която съчетава най-добрите практики от водещи програми за изследователска работа на ученици от средното училище\, като RSI (престижна международна школа\, която се провежда в MIT)\, с уникалните възможности на една динамична среда за обучение.
URL:https://math.bas.bg/event/25-%d0%bb%d1%8f%d1%82%d0%bd%d0%b0-%d0%b8%d0%b7%d1%81%d0%bb%d0%b5%d0%b4%d0%be%d0%b2%d0%b0%d1%82%d0%b5%d0%bb%d1%81%d0%ba%d0%b0-%d1%88%d0%ba%d0%be%d0%bb%d0%b0-%d0%bf%d0%be-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc/
LOCATION:Творчески дом на БАН\, Варна\, Варна\, к.к. “Чайка”\, спирка “Журналист”\, Varna\, Bulgaria
CATEGORIES:Лятна школа
ORGANIZER;CN="%D0%A3%D1%87%D0%B5%D0%BD%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%20%D0%B8%D0%BD%D1%81%D1%82%D0%B8%D1%82%D1%83%D1%82%20%D0%BF%D0%BE%20%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20%D0%B8%20%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0":MAILTO:hssimi2001@gmail.com
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250709T160000
DTEND;TZID=Europe/Sofia:20250709T173000
DTSTAMP:20260405T051717
CREATED:20250707T123438Z
LAST-MODIFIED:20250707T123502Z
UID:18003-1752076800-1752082200@math.bas.bg
SUMMARY:Семинар по геометрия на МЦМН
DESCRIPTION:Следващата сбирка на Семинара по геометрия на МЦМН ще се състои в сряда\, 9 юли\, от 16:00 ч. в зала 403 и онлайн в Zoom:\n\nhttps://icms.bg/around-combinatorial-viros-patchworking-geometry-seminar-talk-by-arthur-renaudineau/\n\n\nZoom link:\nhttps://us02web.zoom.us/j/86186281353?pwd=6CARUygJaA3HiTNAt3norZQRFt8fIL.1
URL:https://math.bas.bg/event/icms-geometry-seminar/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250715T130000
DTEND;TZID=Europe/Sofia:20250715T143000
DTSTAMP:20260405T051717
CREATED:20250711T123522Z
LAST-MODIFIED:20250711T125611Z
UID:18007-1752584400-1752589800@math.bas.bg
SUMMARY:Общ семинар на секция "Анализ\, геометрия и топология" и МЦМН
DESCRIPTION:На 15 юли 2025 г. от 13:00 часа в зала 403 на ИМИ-БАН ще се проведе съвместно заседание на Общия семинар на секция “Анализ\, геометрия и топология” и Международния център по математически науки (ICMS-Sofia). \nДоклад на тема: \nWeak Metric Structures on Generalized Riemannian Manifolds\nще изнесе Milan Zlatanovic\, University of Niš\, Serbia. \nРезюме. Linear connections with torsion are important in the study of generalized Riemannian manifolds (\(M\)\, \(G=g+F\))\, where the symmetric part \(g\) of \(G\) is a non-degenerate (0\,2)-tensor and \(F\) is the skew-symmetric part. Some space-time models in theoretical physics are based on \((M\, G=g+F)\)\, where \(F\) is defined using a complex structure. In the lecture\, we will show more general models\, where \(F\) has constant rank and is based on weak metric structures (introduced by the V. Rovenski and R. Wolak)\, which generalize almost contact and \(f\)-contact structures. We consider metric connections (i.e.\, preserving \(G\)) with totally skew-symmetric torsion tensor. For \(\mbox{rank}(F)= \mbox{dim} M\) and non-conformal tensor \(A^2\)\, where \(A\) is a skew-symmetric (1\,1)-tensor adjoint to \(F\)\, we apply weak almost Hermitian structures to fundamental results (by S. Ivanov and M. Zlatanovic) on generalized Riemannian manifolds and prove that the manifold is a weighted product of several nearly Kahler manifolds corresponding to eigen-distributions of \(A^2\). For \(\mbox{rank}(F)< \mbox{dim} M\) we apply weak \(f\)-structures and obtain splitting results for generalized Riemannian manifolds.\n(This is joint work with Vladimir Rovenski\, Department of Mathematics\, University of Haifa). \nПосещението на лектора е финансирано по Научна програма “Повишаване на изследователския капацитет в областта на математическите науки (ПИКОМ)”\, № ДО1-67/05.05.2022. \n\n 
URL:https://math.bas.bg/event/%d0%be%d0%b1%d1%89-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%b0%d0%bd%d0%b0%d0%bb%d0%b8%d0%b7-%d0%b3%d0%b5%d0%be%d0%bc%d0%b5%d1%82%d1%80%d0%b8-24/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%2C%20%D0%B3%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F%20%D0%B8%20%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F":MAILTO:vmil@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250722T130000
DTEND;TZID=Europe/Sofia:20250722T143000
DTSTAMP:20260405T051717
CREATED:20250717T082026Z
LAST-MODIFIED:20250717T082804Z
UID:18028-1753189200-1753194600@math.bas.bg
SUMMARY:Общ семинар на секция "Анализ\, геометрия и топология" и МЦМН
DESCRIPTION:Съвместна сбирка на семинара на МЦМН и семинара “Анализ\, геометрия и топология” в ИМИ\, София\, ще се проведе идния вторник\, с доклад на Elia Fusi\, както следва.\n\nВторник\, 22-ри юли\, 13:00 часа\, зала 403 на ИМИ-БАН.\nElia Fusi\, University of Torino:\nSpecial metrics in hypercomplex geometry\n\nAbstract:The existence of special hyperHermitian metrics plays an important role in the study of hypercomplex manifolds. In this talk\, after a brief overview of the basic definitions in hypercomplex Geometry\, we will discuss two of the main types of special metrics in the hypercomplex setting: quaternionic Gauduchon and strong HKT metrics. First of all\, we will discuss sufficient and equivalent conditions for a quaternionic Gauduchon metric to exist.  Afterwards\, we will show that strong HKT and balanced hyperHermitian metrics cannot coexist on a compact non-hyperKähler manifold\, proving a particular instance of the Fino-Vezzoni conjecture. Finally\, we will introduce an Einstein condition for hyperHermitian metrics and describe the similarities with the Kähler-Einstein case.\nThis is a joint work with Giovanni Gentili.\n \nПовече информация можете да намерите на страницата на семинара:\nhttps://icms.bg/category/icms-seminar/\n 
URL:https://math.bas.bg/event/%d0%be%d0%b1%d1%89-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%b0%d0%bd%d0%b0%d0%bb%d0%b8%d0%b7-%d0%b3%d0%b5%d0%be%d0%bc%d0%b5%d1%82%d1%80%d0%b8-25/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%2C%20%D0%B3%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F%20%D0%B8%20%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F":MAILTO:vmil@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250722T130000
DTEND;TZID=Europe/Sofia:20250722T143000
DTSTAMP:20260405T051717
CREATED:20250728T205435Z
LAST-MODIFIED:20250728T210027Z
UID:18052-1753189200-1753194600@math.bas.bg
SUMMARY:Общ семинар на секция "Анализ\, геометрия и топология"
DESCRIPTION:Семинар “Анализ\, геометрия и топология”\nВторник\, 22 юли 2025 г.\, 13:00 ч.\, зала 403 на ИМИ – БАН.\nElia Fusi\, University of Torino.\nSpecial metrics in hypercomplex geometry\n\nРезюме: The existence of special hyperHermitian metrics plays an important role in the study of hypercomplex manifolds. In this talk\, after a brief overview of the basic definitions in hypercomplex Geometry\, we will discuss two of the main types of special metrics in the hypercomplex setting: quaternionic Gauduchon and strong HKT metrics. First of all\, we will discuss sufficient and equivalent conditions for a quaternionic Gauduchon metric to exist.  Afterwards\, we will show that strong HKT and balanced hyperHermitian metrics cannot coexist on a compact non-hyperKähler manifold\, proving a particular instance of the Fino-Vezzoni conjecture. Finally\, we will introduce an Einstein condition for hyperHermitian metrics and describe the similarities with the Kähler-Einstein case.\nThis is a joint work with Giovanni Gentili.
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%b0%d0%bd%d0%b0%d0%bb%d0%b8%d0%b7-%d0%b3%d0%b5%d0%be%d0%bc%d0%b5%d1%82%d1%80%d0%b8%d1%8f-%d0%b8-%d1%82%d0%be%d0%bf%d0%be%d0%bb%d0%be%d0%b3%d0%b8%d1%8f/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%2C%20%D0%B3%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F%20%D0%B8%20%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F":MAILTO:vmil@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250724
DTEND;VALUE=DATE:20250728
DTSTAMP:20260405T051717
CREATED:20250627T203326Z
LAST-MODIFIED:20250627T203326Z
UID:17970-1753315200-1753660799@math.bas.bg
SUMMARY:19-та Международна лятна конференция “Вероятности и статистика”
DESCRIPTION:19-та Международна лятна конференция “Вероятности и статистика”\n24.07.2025 – 27.07.2025\nСофия\, България \nОрганизаторите на конференцията отправят покана към своите колеги за участие в 19-ата Международна конференция по вероятности и статистика\, която ще се проведе в Института по математика и информатика\, София\, от 24 до 27 юли 2025 г. \nСъорганизатори на събитието са: \n\nИнститут по математика и информатика на Българската академия на науките\nФакултет по математика и информатика на СУ “Св. Климент Охридски”\n\nДопълнителна информация: http://www.math.bas.bg/~statlab/ISCPS2025/
URL:https://math.bas.bg/event/19-%d1%82%d0%b0-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83%d0%bd%d0%b0%d1%80%d0%be%d0%b4%d0%bd%d0%b0-%d0%bb%d1%8f%d1%82%d0%bd%d0%b0-%d0%ba%d0%be%d0%bd%d1%84%d0%b5%d1%80%d0%b5%d0%bd%d1%86%d0%b8%d1%8f/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Конференция
ORGANIZER;CN="%D0%98%D0%BD%D1%81%D1%82%D0%B8%D1%82%D1%83%D1%82%20%D0%BF%D0%BE%20%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20%D0%B8%20%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20-%20%D0%91%D0%90%D0%9D":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250724T140000
DTEND;TZID=Europe/Sofia:20250724T153000
DTSTAMP:20260405T051717
CREATED:20250717T081421Z
LAST-MODIFIED:20250717T081421Z
UID:18024-1753365600-1753371000@math.bas.bg
SUMMARY:Семинар "Математически основи на информатиката"
DESCRIPTION:Следващата сбирка на семинара на секция \nМАТЕМАТИЧЕСКИ ОСНОВИ НА ИНФОРМАТИКАТА \nще се състои в сряда\, 24.07.2025\, от 14:00 часа\, в зала 403 на ИМИ\, на която \nпроф. Марк Айуън\nще изнесе доклад на тема: \nSparse Spectral Methods for Solving High-Dimensional and Multiscale Elliptic PDEs\nПроф. Айуън работи в департамента по изчислителна математика в Michigan State University и има широки интереси свързани с обработката на данни и обработката на сигнали. Темата\, която предложи за семинара има някои неочаквани връзки с определени шумозащитни кодове.\nРезюме. In his monograph “Chebyshev and Fourier Spectral Methods”\, John Boyd claimed that\, regarding Fourier spectral methods for solving differential equations\, “[t]he virtues of the Fast Fourier Transform will continue to improve as the relentless march to larger and larger [bandwidths] continues” [1\, pg. 194]. This talk will discuss attempts to further the virtue of the Fast Fourier Transform (FFT) as not only bandwidth is pushed to its limits\, but also the dimension of the problem. Instead of using the traditional FFT however\, we make a key substitution from the sublinear-time compressive sensing literature: a high-dimensional\, sparse Fourier transform (SFT) paired with randomized rank-1 lattice methods. The resulting sparse spectral method rapidly and automatically determines a set of Fourier basis functions whose span is guaranteed to contain an accurate approximation of the solution of a given elliptic PDE. This much smaller\, near-optimal Fourier basis is then used to efficiently solve the given PDE in a runtime which only depends on the PDE’s data/solution compressibility and ellipticity properties\, while breaking the curse of dimensionality and relieving linear dependence on any multiscale structure in the original problem. Theoretical performance of the method is established with convergence analysis in the Sobolev norm for a general class of nonconstant diffusion equations\, as well as pointers to technical extensions of the convergence analysis to more general advection-diffusion-reaction equations. Numerical experiments demonstrate good empirical performance on several multiscale and high-dimensional example problems\, further showcasing the promise of the proposed methods in practice.
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8-%d0%be%d1%81%d0%bd%d0%be%d0%b2%d0%b8-%d0%bd%d0%b0-%d0%b8%d0%bd%d1%84%d0%be-6/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250725T130000
DTEND;TZID=Europe/Sofia:20250725T143000
DTSTAMP:20260405T051717
CREATED:20250724T082116Z
LAST-MODIFIED:20250724T082116Z
UID:18045-1753448400-1753453800@math.bas.bg
SUMMARY:Семинар "Алгебра и логика"
DESCRIPTION:На 25 юли 2025 г. (петък) от 13:00 часа в зала 578 на ИМИ\nще се проведе присъствено заседание на семинара по „Алгебра и логика”. \nДоклад на тема: \nDistinctness of the “lifted” Kloosterman sums over the prime field Fp\nще изнесе \nЛюбомир Борисов (ИМИ-БАН).\nРезюме \n\nПоканват се всички желаещи да присъстват. \nОт секция „Алгебра и логика” на ИМИ – БАН\nhttp://www.math.bas.bg/algebra/seminarAiL/\n============================== =====================
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%b0%d0%bb%d0%b3%d0%b5%d0%b1%d1%80%d0%b0-%d0%b8-%d0%bb%d0%be%d0%b3%d0%b8%d0%ba%d0%b0-122/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BB%D0%B3%D0%B5%D0%B1%D1%80%D0%B0%20%D0%B8%20%D0%BB%D0%BE%D0%B3%D0%B8%D0%BA%D0%B0":MAILTO:algebra_logic_seminar@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250729T130000
DTEND;TZID=Europe/Sofia:20250729T143000
DTSTAMP:20260405T051717
CREATED:20250728T210248Z
LAST-MODIFIED:20250728T210325Z
UID:18057-1753794000-1753799400@math.bas.bg
SUMMARY:Общ семинар на секция "Анализ\, геометрия и топология"
DESCRIPTION:Семинар “Анализ\, геометрия и топология”\nВторник\, 29 юли 2025 г.\, 13:00 ч.\, зала 403 на ИМИ – БАН.\n\nSpeaker: Asia Mainenti\, IMI and ICMS\, Sofia\n\nHodge-Riemann balanced structures on non-Kähler manifolds\n\nРезюме:  A Hodge-Riemann balanced structure on a complex manifold is the datum of a balanced metric whose (n-1)-th power can be decomposed into the wedge product of two differential forms\, satisfying the classical Hodge-Riemann bilinear relations. Such structures were introduced by X. Chen and R. Wentworth\, to generalize the nonabelian Hodge correspondence to non-Kähler Hermitian metrics. However\, there are no known examples of Hodge-Riemann balanced structures on non-Kähler manifolds. The aim of this talk is to address this lack of examples\, highlighting the relation with p-Kähler structures and discuss some obstruction results in the class of solvmanifolds. Lastly\, we will present the first example of such a structure on a non-Kähler\, non-compact complex manifold obtained as the product of the Iwasawa manifold by C. This is joint work with A. Fino.
URL:https://math.bas.bg/event/%d0%be%d0%b1%d1%89-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%b0%d0%bd%d0%b0%d0%bb%d0%b8%d0%b7-%d0%b3%d0%b5%d0%be%d0%bc%d0%b5%d1%82%d1%80%d0%b8-26/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%2C%20%D0%B3%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F%20%D0%B8%20%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F":MAILTO:vmil@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250807
DTEND;VALUE=DATE:20250810
DTSTAMP:20260405T051717
CREATED:20250805T133815Z
LAST-MODIFIED:20250805T133843Z
UID:18093-1754524800-1754783999@math.bas.bg
SUMMARY:МЦМН - Международна конференция Celebrating the Consortium IMSAC
DESCRIPTION:В периода 7 – 9 август 2025 г. Институтът по математика и информатика при Българската академия на науките (ИМИ – БАН) ще бъде домакин на международната конференция \nCelebrating the Consortium IMSAC\nКонференцията е съвместно организирана от Международния център по математически науки – София (ICMS-Sofia) към ИМИ–БАН и Института за математически науки на Америките (IMSA) към Университета на Маями. \nПрограма на конференцията. \nZoom.
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83%d0%bd%d0%b0%d1%80%d0%be%d0%b4%d0%bd%d0%b0-%d0%ba%d0%be%d0%bd%d1%84%d0%b5%d1%80%d0%b5%d0%bd%d1%86%d0%b8%d1%8f-celebrating-the-consortium-imsac/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Конференция
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250811
DTEND;VALUE=DATE:20250815
DTSTAMP:20260405T051717
CREATED:20250805T142926Z
LAST-MODIFIED:20250805T142926Z
UID:18104-1754870400-1755215999@math.bas.bg
SUMMARY:МЦМН - Международна конференция Geometry at Large
DESCRIPTION:Международния център за математически науки (ICMS-София) към Института по математика и информатика на Българската академия на науките и\nИнститута за математически науки на Северна и Южна Америка (IMSA) към Университета в Маями \nорганизират \nМеждународна конференция \nGeometry at Large\,\nкоято ще се проведе в Бургас от 11 до 14 август 2025. \nПрограма на конференцията.
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83%d0%bd%d0%b0%d1%80%d0%be%d0%b4%d0%bd%d0%b0-%d0%ba%d0%be%d0%bd%d1%84%d0%b5%d1%80%d0%b5%d0%bd%d1%86%d0%b8%d1%8f-geometry-at-large/
LOCATION:Grand Hotel & SPA Primoretz\, Burgas\, Burgas\, Bulgaria
CATEGORIES:Конференция
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250816
DTEND;VALUE=DATE:20250818
DTSTAMP:20260405T051717
CREATED:20250812T093616Z
LAST-MODIFIED:20250812T093616Z
UID:18137-1755302400-1755475199@math.bas.bg
SUMMARY:МЦМН - Уъркшоп New Developments on Arnold’s conjecture
DESCRIPTION:Международният център за математически науки (ICMS-София) към Института по математика и информатика на Българската академия на науките и\nИнститутът за математически науки на Северна и Южна Америка (IMSA) към Университета в Маями \nорганизират \nУЪРКШОП \nNew Developments on Arnold’s conjecture\,\nкойто ще се проведе в ИМИ на 16 и 17 август 2025.
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d1%83%d1%8a%d1%80%d0%ba%d1%88%d0%be%d0%bf-new-developments-on-arnolds-conjecture/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Уъркшоп
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250820T160000
DTEND;TZID=Europe/Sofia:20250820T173000
DTSTAMP:20260405T051717
CREATED:20250818T105042Z
LAST-MODIFIED:20250818T105042Z
UID:18161-1755705600-1755711000@math.bas.bg
SUMMARY:Семинар по геометрия на МЦМН
DESCRIPTION:Следващата сбирка на Семинара по геометрия на МЦМН ще се състои в сряда\, 20 август\, от 16:00 ч. в зала 403 и онлайн в Zoom:\n\nFriezes\, Geometry seminar talk by Andrei Zabolotskii \n\nZoom link:\n\nhttps://us02web.zoom.us/j/86186281353?pwd=6CARUygJaA3HiTNAt3norZQRFt8fIL.1
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bf%d0%be-%d0%b3%d0%b5%d0%be%d0%bc%d0%b5%d1%82%d1%80%d0%b8%d1%8f-%d0%bd%d0%b0-%d0%bc%d1%86%d0%bc%d0%bd-16/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250901
DTEND;VALUE=DATE:20250906
DTSTAMP:20260405T051717
CREATED:20250829T114339Z
LAST-MODIFIED:20250829T114339Z
UID:18182-1756684800-1757116799@math.bas.bg
SUMMARY:МЦМН: Workshop in Algebraic Geometry and Physics 2025: “Geometry and Physics of Higgs moduli”
DESCRIPTION:The conference is organized by the International Center for Mathematical Sciences (ICMS-Sofia) at the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences\, the International School for Advanced Studies (SISSA)\, Trieste\, the American University in Bulgaria (AUBG) and the Institute of the Mathematical Sciences of the Americas (IMSA) with financial support from the Simons Foundation\, the Bulgarian Ministry of Education and Science\, SISSA and AUBG. \nThe workshop is the 20th installment of a sequence of conferences and schools\, organized since 1996. It aims to bring together leading experts and early-career researchers working on various aspects of the geometry and physics of Higgs bundle moduli\, non-abelian Hodge theory\, symplectic geometry and related fields like integrable systems\, deformation theory and derived geometry.
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-workshop-in-algebraic-geometry-and-physics-2025-geometry-and-physics-of-higgs-moduli/
LOCATION:Катарино Спа\, 41.88957952531981\, 23.42650382991656\, Разлог\, Разлог\, 2760\, Bulgaria
CATEGORIES:Конференция,Уъркшоп
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250923T140000
DTEND;TZID=Europe/Sofia:20250923T170000
DTSTAMP:20260405T051717
CREATED:20250920T162124Z
LAST-MODIFIED:20250920T162124Z
UID:18227-1758636000-1758646800@math.bas.bg
SUMMARY:Семинар на МЦМН: Recent Developments on Tropical Sandpiles and Related Subjects
DESCRIPTION:The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) \npresents\nRecent Developments on Tropical Sandpiles\nand Related Subjects\nTuesday\, 23 September and Thursday\, 25 September 2025 \nICMS-Sofia\, Room 403 and via Zoom \n\n\n\nYou may find the details here:\nhttps://icms.bg/recent-developments-on-tropical-sandpiles-and-related-subjects/\n\nIn addition\, we plan to have a “round table” meeting at room 378 on Wednesday\, September 24\, at 14:00\, to openly exchange ideas while enjoying drinks and snacks.
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d0%bc%d1%86%d0%bc%d0%bd-recent-developments-on-tropical-sandpiles-and-related-subjects/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250925
DTEND;VALUE=DATE:20250929
DTSTAMP:20260405T051717
CREATED:20250829T113341Z
LAST-MODIFIED:20250903T091512Z
UID:18179-1758758400-1759103999@math.bas.bg
SUMMARY:Петнадесета международна конференция „Цифрово представяне и опазване на културно и научно наследство“ – DiPP2025
DESCRIPTION:От 25 до 28 септември 2025 г. Институтът по математика и информатика при Българска академия на науките\, под патронажа на ЮНЕСКО и с подкрепата на Фонд „Научни изследвания“ и Община Бургас\, организира Петнадесетата международна конференция „Цифрово представяне и опазване на културно и научно наследство“ – DiPP2025. \nПрестижното научно събитие DiPP2025 ще бъде открито на 25 септември 2025 г. от 12:30 часа в Културен център „Морско казино“ – Бургас. То се провежда в подкрепа на кандидатурата на гр. Бургас за Европейска столица на културата 2032. \nСъорганизатори:  \nРегионален академичен център на БАН-Бургас;\nРегионален исторически музей – Бургас;\nБургаски свободен университет;\nРегионална библиотека „Пейо Яворов“\, гр. Бургас\,\nБургаски държавен университет „Проф. А. Златаров“. \nСъпътстващи събития: \n─ 16-ти национален информационен ден „Open Science\, Open Data\, Open Access\, Bulgarian Open Science Cloud“. \n─ 4-ти информационен ден „Research Infrastructure Services in the Humanities and Social Sciences”\, организиран от Институт по математика и информатика – БАН да представи постигнати научни резултати по проект „Национална интердисциплинарна изследователска Е-инфраструктура за ресурси и технологии за българското езиково и културно наследство\, интегрирана в рамките на европейските инфраструктури CLARIN и DARIAH (КЛаДА-БГ)“. \nПовече информация за конференцията може да се види на страницата на DiPP2025 (http://dipp2025.math.bas.bg/). \nПредварителна програма.
URL:https://math.bas.bg/event/%d0%bf%d0%b5%d1%82%d0%bd%d0%b0%d0%b4%d0%b5%d1%81%d0%b5%d1%82%d0%b0-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83%d0%bd%d0%b0%d1%80%d0%be%d0%b4%d0%bd%d0%b0-%d0%ba%d0%be%d0%bd%d1%84%d0%b5%d1%80%d0%b5%d0%bd%d1%86%d0%b8/
LOCATION:Културен център “Морско казино” – Бургас\, Приморски парк\, Бургас\, Burgas\, Bulgaria
CATEGORIES:Конференция
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250925T140000
DTEND;TZID=Europe/Sofia:20250925T170000
DTSTAMP:20260405T051717
CREATED:20250920T162350Z
LAST-MODIFIED:20250920T162350Z
UID:18230-1758808800-1758819600@math.bas.bg
SUMMARY:Семинар на МЦМН: Recent Developments on Tropical Sandpiles and Related Subjects
DESCRIPTION:The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) \npresents\nRecent Developments on Tropical Sandpiles\nand Related Subjects\nTuesday\, 23 September and Thursday\, 25 September 2025 \nICMS-Sofia\, Room 403 and via Zoom \n\n\n\nYou may find the details here:\nhttps://icms.bg/recent-developments-on-tropical-sandpiles-and-related-subjects/\n\nIn addition\, we plan to have a “round table” meeting at room 378 on Wednesday\, September 24\, at 14:00\, to openly exchange ideas while enjoying drinks and snacks.
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d0%bc%d1%86%d0%bc%d0%bd-recent-developments-on-tropical-sandpiles-and-related-subjects-2/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250930T110000
DTEND;TZID=Europe/Sofia:20250930T123000
DTSTAMP:20260405T051717
CREATED:20250924T131241Z
LAST-MODIFIED:20250924T131548Z
UID:18237-1759230000-1759235400@math.bas.bg
SUMMARY:Съвместно заседание на семинарите на секция АГТ и МЦМН
DESCRIPTION:Съвместен семинар на секция “Анализ\, геометрия и топология”\nи Международния център за математически науки – София (МЦМН-София) \nConcircularly Semi-Symmetric Metric Connection\nMiroslav Maksimović \nУниверситет на Прищина в Косовска Митровица\, Косовска Митровица\, Сърбия\, и\nИнститут по математика и информатика\, Българска академия на науките \n30 септември 2025 г.\, 11:00 ч. – Зала 403 \nРезюме. A concircularly semi-symmetric metric connection is a special class of semi-symmetric metric connection when its generator is a concircular vector. In this talk\, we will present results on this connection on pseudo-Riemannian manifolds\, and in particular\, we will observe the application to Lorentzian manifolds and the theory of relativity. We demonstrate that a Lorentzian manifold reduces to a GRW space-time when the generator of the observed connection is a unit timelike vector. At the same time\, the mentioned connection becomes a semi-symmetric metric P-connection. At the end\, we determine the equation of state on a perfect fluid space-time. These are the results of a joint work with prof. Milan Zlatanović published in J. Geom. Phys. 217 (2025). \nThe lecturer is supported by the Scientific Programme “Enhancing the Research Capacity in Mathematical Sciences (PIKOM)”\, No. DO1-67/05.05.2022.
URL:https://math.bas.bg/event/%d1%81%d1%8a%d0%b2%d0%bc%d0%b5%d1%81%d1%82%d0%b5%d0%bd-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%b0%d0%b3%d1%82-%d0%b8-%d0%bc%d1%86%d0%bc%d0%bd/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%2C%20%D0%B3%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B8%D1%8F%20%D0%B8%20%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F":MAILTO:vmil@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251003T130000
DTEND;TZID=Europe/Sofia:20251003T143000
DTSTAMP:20260405T051717
CREATED:20250930T115707Z
LAST-MODIFIED:20250930T115707Z
UID:18277-1759496400-1759501800@math.bas.bg
SUMMARY:Семинар "Алгебра и логика"
DESCRIPTION:На 3 октомври 2025 г. (петък) от 13:00 часа в зала 578 на ИМИ-БАН и онлайн чрез платформата zoom\nще се проведе хибридно заседание на семинара по „Алгебра и логика”. \nДоклад на тема: \nDecomposition of Tschirnhausen Modules for Coverings on Decomposable P1-Bundles\nще изнесе \nХристо Илиев (Американски университет в България и ИМИ-БАН).\nРезюме \n\nЛинк към zoom-стаята на семинара:\nHttps://us02web.zoom.us/j/85137375021?pwd=RE5QczdFTE1xL1R6MnI2b1lkcGczQT09\n\nПоканват се всички желаещи да присъстват. \nОт секция „Алгебра и логика” на ИМИ – БАН\nhttp://www.math.bas.bg/algebra/seminarAiL/\n============================== =====================
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%b0%d0%bb%d0%b3%d0%b5%d0%b1%d1%80%d0%b0-%d0%b8-%d0%bb%d0%be%d0%b3%d0%b8%d0%ba%d0%b0-123/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BB%D0%B3%D0%B5%D0%B1%D1%80%D0%B0%20%D0%B8%20%D0%BB%D0%BE%D0%B3%D0%B8%D0%BA%D0%B0":MAILTO:algebra_logic_seminar@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251006T153000
DTEND;TZID=Europe/Sofia:20251006T170000
DTSTAMP:20260405T051717
CREATED:20251005T151155Z
LAST-MODIFIED:20251005T151155Z
UID:18309-1759764600-1759770000@math.bas.bg
SUMMARY:Миникурс Theory of Atoms
DESCRIPTION:Миникурсът по Theory of Atoms ще продължи в понеделник\, 6 октомври 2025 г.\, от 15:30 до 17:00 ч. в Зала 403\, с лекция на тема: \nQuantum Multiplication and Frobenius Algebras\nДопълнителна информация и линк за Zoom можете да откриете на: https://icms.bg/theory-of-atoms-via-examples/
URL:https://math.bas.bg/event/%d0%bc%d0%b8%d0%bd%d0%b8%d0%ba%d1%83%d1%80%d1%81-theory-of-atoms/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251010T130000
DTEND;TZID=Europe/Sofia:20251010T143000
DTSTAMP:20260405T051717
CREATED:20251006T201908Z
LAST-MODIFIED:20251006T201908Z
UID:18315-1760101200-1760106600@math.bas.bg
SUMMARY:Съвместно заседание на семинара "Алгебра и логика" и семинара на секция ДУМФ
DESCRIPTION:На 10 октомври 2025 г. (петък) от 13:00 часа в зала 578 на ИМИ-БАН и онлайн чрез платформата zoom ще се проведе съвместно заседание на семинара по Алгебра и логика и на семинара на секция “Диференциални уравнения и математическа физика”. \nДоклад на тема \nOn Z5 reduction of soliton equations related to sl(5) algebra\n ще изнесе \nВладимир Герджиков (ИМИ-БАН)\, \nсъвместна работа с Б. Костадинов (ИМИ-БАН)\, С. Мишев (НБУ) и А. Стефанов (ФМИ-СУ). \nРезюме: Recently a new approach to the integrable systems\, extending and generalizing the ISM was formulated. It is based on an effective parametrization of the Riemann-Hilbert problem\, which allows one to extend the class of Lax pairs and effectively derive only the corresponding NLEE as compatibility condition of two linear problems. This method is based on the possibility to treat the solution of the RHP as a fundamental analytic solution of the Lax pair\, and then to apply the dressing Zakharov-Shabat method for deriving the soliton solutions of the NLEE. The aim of the present paper is to extend Mikhailov Z5 reduction group to the parametrization of the Z5 RHP. The NLEE that we obtained are dispersionless. \n\nPublished in Journal of Physics: Conference Series\, Vol. 3002:(1)\, id. 012014\, 14 pp. \nЛинк към zoom-стаята на семинара:\nHttps://us02web.zoom.us/j/85137375021?pwd=RE5QczdFTE1xL1R6MnI2b1lkcGczQT09 \nПоканват се всички желаещи да присъстват.\n\nОт секция „Алгебра и логика” на ИМИ – БАН\nHttps://www.math.bas.bg/algebra/seminarAiL/
URL:https://math.bas.bg/event/%d1%81%d1%8a%d0%b2%d0%bc%d0%b5%d1%81%d1%82%d0%bd%d0%be-%d0%b7%d0%b0%d1%81%d0%b5%d0%b4%d0%b0%d0%bd%d0%b8%d0%b5-%d0%bd%d0%b0-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80%d0%b0-%d0%b0%d0%bb%d0%b3%d0%b5/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F%20%D0%90%D0%BB%D0%B3%D0%B5%D0%B1%D1%80%D0%B0%20%D0%B8%20%D0%BB%D0%BE%D0%B3%D0%B8%D0%BA%D0%B0":MAILTO:algebra_logic_seminar@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251013T140000
DTEND;TZID=Europe/Sofia:20251013T173000
DTSTAMP:20260405T051717
CREATED:20251010T074008Z
LAST-MODIFIED:20251010T074008Z
UID:18323-1760364000-1760376600@math.bas.bg
SUMMARY:МЦМН: Миникурс "Theory of Atoms via Examples" - лекции 5 и 6
DESCRIPTION:Theory of Atoms via Examples\n\nThe Theory of Atoms is a recent formalism introduced by Katzarkov\, Kontsevich\, Pantev\, and Yu\, which aims to integrate classical Hodge theory with symplectic geometry\, seeking applications in birational geometry. \nTo properly understand it\, we must gather concepts from many areas of knowledge\, ranging from Gromov-Witten theory and enumerative algebraic geometry to classical and noncommutative Hodge theory. This series is designed to be an example-driven introduction\, providing the essential background needed to understand this new theory. \n\n\nProgramme:\nPlace: Room 403 (IMI – BAS) \nLectures 1 & 2: Gromov–Witten Theory\nThursday\, 18 September 2025\n10:30–12:00 & 14:30–16:00 \nLecture 3: Quantum Multiplication and Frobenius Algebras\nMonday\, 6 October 2025\n15:30–17:00 \nLecture 4: More on quantum multiplication\nWednesday\, 8 October 2025\n15:30–17:00 \nLecture 5: Hodge Structures\, Variation of Hodge Structures and Noncommutative Hodge Structures\nMonday\, 13 October 2025\n14:00–15:30 \nLecture 6: Variations of Noncommutative Hodge Structures\nMonday\, 13 October 2025\n16:00–17:30 \nLecture 7: F-bundles\nWednesday\, 15 October 2025\n15:30–17:00 \nLecture 8: Atoms\nFriday\, 17 October 2025\n14:00–15:00 \nLecture 9: Examples\nFriday\, 17 October 2025\nTime: 16:00–17:30 \n  \nBibliography:\n[1] W. Fulton and R. Pandharipande\, Notes on stable maps and quantum cohomology\, 1997. Available at arXiv:alg-geom/9608011. \n[2] L. Katzarkov\, M. Kontsevich\, and T. Pantev\, Hodge theoretic aspects of mirror symmetry\, in From Hodge theory to integrability and TQFT tt*-geometry\, Proc. Sympos. Pure Math.\, vol. 78\, Amer. Math. Soc.\, Providence\, RI\, 2008\, pp. 87–117. \n[3] L. Katzarkov\, M. Kontsevich\, T. Pantev\, and T. Yue Yu\, Birational invariants from Hodge structures and quantum multiplication\, 2025. Available at arXiv:2508.05105. \n\nZoom link\nhttps://us06web.zoom.us/j/81931262811?pwd=gZvpjUCJTDpl5dbZfMOJcp6mWQ05MM.1
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d0%bc%d0%b8%d0%bd%d0%b8%d0%ba%d1%83%d1%80%d1%81-theory-of-atoms-via-examples-%d0%bb%d0%b5%d0%ba%d1%86%d0%b8%d0%b8-5-%d0%b8-6/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251015T150000
DTEND;TZID=Europe/Sofia:20251015T170000
DTSTAMP:20260405T051717
CREATED:20251006T195108Z
LAST-MODIFIED:20251006T195108Z
UID:18312-1760540400-1760547600@math.bas.bg
SUMMARY:Семинар по приложна математика
DESCRIPTION:Следващата сбирка на Семинара по приложна математика ще се проведе на 15.10 (сряда) от 15:00 в зала 503 на ИМИ-БАН. \nДоклад на тема \nStochastic scattering control of Walsh’s spider diffusion with optimal diffraction probability measure selected from its own local-time\nще изнесе Исаак Охави\, който работи в обалсти като стохастичен контрол\, стохастична оптимизация и частни диференциални уравнения. \nAbstract: In this talk\, we start by giving a short introduction on “classical” stochastic control theory and its connection with second order nonlinear PDE theory. Then\, we present Walsh’s spider diffusions living on a star-shaped network\, and explain how these processes are at the origin of new problems of stochastic scattering control. A main direction is to focus and understand precisely their behavior and local time at the vertex. Thereafter\, we will give the main ideas\, steps and mathematical directions that I have recently undertaken in order to finally be able to prove existence and weak uniqueness of a spider’s motion having a spinning measure depending on its own local time. \nThe stochastic control problem aims to understand how the spider particle is diffracted at the vertex. The key point is to use the new boundary condition at the junction point\, called: nonlinear local-time Kirchhoff’s boundary condition and the recent advances I have obtained in the analysis of nonlinear partial differential equations in the viscosity framework. \nReferences:  \n–Comparison principle for Walsh’s spider HJB equations with non linear local time Kirchhoff’s boundary transmission. Journal of Mathematical Analysis and Applications\, 547 (2)\, 2025. \n-Martingal problem for a Walsh’s spider diffusion with spinning measure selected from its own local time. Accepted January 2025. Electronic Journal of Probability\, Volume 30\, paper\nno 22\, 2025.\n-Well posedness of linear parabolic partial differential equations posed on a star-shaped network with local time Kirchhoff’s boundary condition at the vertex. Journal of Mathematical Analysis and Applications\, 537 (2)\, 2024. \n-Stochastic scattering control of spider diffusion governed by an optimal probability diffraction measure selected from its own local time. Submitted 2025\, Arxiv arXiv:2501.18057
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bf%d0%be-%d0%bf%d1%80%d0%b8%d0%bb%d0%be%d0%b6%d0%bd%d0%b0-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d0%ba%d0%b0-15/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251015T153000
DTEND;TZID=Europe/Sofia:20251015T170000
DTSTAMP:20260405T051717
CREATED:20251010T074405Z
LAST-MODIFIED:20251010T074405Z
UID:18326-1760542200-1760547600@math.bas.bg
SUMMARY:МЦМН: Миникурс "Theory of Atoms via Examples" - лекция 7
DESCRIPTION:Theory of Atoms via Examples\n\nThe Theory of Atoms is a recent formalism introduced by Katzarkov\, Kontsevich\, Pantev\, and Yu\, which aims to integrate classical Hodge theory with symplectic geometry\, seeking applications in birational geometry. \nTo properly understand it\, we must gather concepts from many areas of knowledge\, ranging from Gromov-Witten theory and enumerative algebraic geometry to classical and noncommutative Hodge theory. This series is designed to be an example-driven introduction\, providing the essential background needed to understand this new theory. \n\n\nProgramme:\nPlace: Room 403 (IMI – BAS) \nLectures 1 & 2: Gromov–Witten Theory\nThursday\, 18 September 2025\n10:30–12:00 & 14:30–16:00 \nLecture 3: Quantum Multiplication and Frobenius Algebras\nMonday\, 6 October 2025\n15:30–17:00 \nLecture 4: More on quantum multiplication\nWednesday\, 8 October 2025\n15:30–17:00 \nLecture 5: Hodge Structures\, Variation of Hodge Structures and Noncommutative Hodge Structures\nMonday\, 13 October 2025\n14:00–15:30 \nLecture 6: Variations of Noncommutative Hodge Structures\nMonday\, 13 October 2025\n16:00–17:30 \nLecture 7: F-bundles\nWednesday\, 15 October 2025\n15:30–17:00 \nLecture 8: Atoms\nFriday\, 17 October 2025\n14:00–15:00 \nLecture 9: Examples\nFriday\, 17 October 2025\nTime: 16:00–17:30 \n  \nBibliography:\n[1] W. Fulton and R. Pandharipande\, Notes on stable maps and quantum cohomology\, 1997. Available at arXiv:alg-geom/9608011. \n[2] L. Katzarkov\, M. Kontsevich\, and T. Pantev\, Hodge theoretic aspects of mirror symmetry\, in From Hodge theory to integrability and TQFT tt*-geometry\, Proc. Sympos. Pure Math.\, vol. 78\, Amer. Math. Soc.\, Providence\, RI\, 2008\, pp. 87–117. \n[3] L. Katzarkov\, M. Kontsevich\, T. Pantev\, and T. Yue Yu\, Birational invariants from Hodge structures and quantum multiplication\, 2025. Available at arXiv:2508.05105. \n\nZoom link\nhttps://us06web.zoom.us/j/81931262811?pwd=gZvpjUCJTDpl5dbZfMOJcp6mWQ05MM.1
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d0%bc%d0%b8%d0%bd%d0%b8%d0%ba%d1%83%d1%80%d1%81-theory-of-atoms-via-examples-%d0%bb%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-7/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251016T133000
DTEND;TZID=Europe/Sofia:20251016T173000
DTSTAMP:20260405T051717
CREATED:20251016T084322Z
LAST-MODIFIED:20251016T101527Z
UID:18343-1760621400-1760635800@math.bas.bg
SUMMARY:Уъркшоп Codes\, Orthogonal Arrays\, and Related Areas
DESCRIPTION:Workshop on Codes\, Orthogonal Arrays\, and Related Areas\n  \nOne-day workshop on “Codes\, Orthogonal Arrays\, and Related Areas” will be held at Sabancı University\, Türkiye. The event aims to bring together researchers working on coding theory\, combinatorial designs\, and related algebraic structures to discuss recent developments and explore potential collaborations. \nOrganizers: \n\nPeter Boyvalenkov (Institute of Mathematics and Informatics\, Bulgarian Academy of Sciences\, Bulgaria)\nFerruh Özbudak (Sabancı University\, Türkiye)\n\nProgram \n13:40 – 14:30\nStefka Bouyuklieva (Veliko Tarnovo University\, Bulgaria)\n“Linear codes over a finite field with a given permutation automorphism” \n14:40 – 15:30\nMaryam Bajalan (Institute of Mathematics and Informatics\, Bulgarian Academy of Sciences\, Bulgaria)\n“Codes over rings\, with emphasis on polycyclic codes” \n15:30 – 15:50\nCoffee Break \n15:50 – 16:20\nIliya Bouyukliev (Institute of Mathematics and Informatics\, Bulgarian Academy of Sciences\, Bulgaria)\n“A software program for the equivalence of linear codes over finite fields and some applications” \n16:30 – 17:00\nPeter Boyvalenkov (Institute of Mathematics and Informatics\, Bulgarian Academy of Sciences\, Bulgaria)\n“On covering radius of orthogonal arrays of even strength” \n17:10 – 17:30\nFerruh Özbudak (Sabancı University\, Türkiye)\n“An Introduction to the Covering Radius of Codes” \n  \nParticipation\nParticipation is free of charge and open to all interested researchers and graduate students.\nFor further information\, please contact: ferruh.ozbudak@sabanciuniv.edu \n  \nJoin Zoom Meeting\nhttps://sabanciuniv.zoom.us/j/96801600679?pwd=amp5OENCM0dHOC9qd1NlOHJRM3dCQT09 \nMeeting ID: 968 0160 0679\nPasscode: 783038
URL:https://math.bas.bg/event/%d1%83%d1%8a%d1%80%d0%ba%d1%88%d0%be%d0%bf-codes-orthogonal-arrays-and-related-areas/
LOCATION:онлайн
CATEGORIES:Уъркшоп
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251017T140000
DTEND;TZID=Europe/Sofia:20251017T173000
DTSTAMP:20260405T051717
CREATED:20251010T075101Z
LAST-MODIFIED:20251010T075101Z
UID:18331-1760709600-1760722200@math.bas.bg
SUMMARY:МЦМН: Миникурс "Theory of Atoms via Examples" - лекции 8 и 9
DESCRIPTION:Theory of Atoms via Examples\n\nThe Theory of Atoms is a recent formalism introduced by Katzarkov\, Kontsevich\, Pantev\, and Yu\, which aims to integrate classical Hodge theory with symplectic geometry\, seeking applications in birational geometry. \nTo properly understand it\, we must gather concepts from many areas of knowledge\, ranging from Gromov-Witten theory and enumerative algebraic geometry to classical and noncommutative Hodge theory. This series is designed to be an example-driven introduction\, providing the essential background needed to understand this new theory. \n\n\nProgramme:\nPlace: Room 403 (IMI – BAS) \nLectures 1 & 2: Gromov–Witten Theory\nThursday\, 18 September 2025\n10:30–12:00 & 14:30–16:00 \nLecture 3: Quantum Multiplication and Frobenius Algebras\nMonday\, 6 October 2025\n15:30–17:00 \nLecture 4: More on quantum multiplication\nWednesday\, 8 October 2025\n15:30–17:00 \nLecture 5: Hodge Structures\, Variation of Hodge Structures and Noncommutative Hodge Structures\nMonday\, 13 October 2025\n14:00–15:30 \nLecture 6: Variations of Noncommutative Hodge Structures\nMonday\, 13 October 2025\n16:00–17:30 \nLecture 7: F-bundles\nWednesday\, 15 October 2025\n15:30–17:00 \nLecture 8: Atoms\nFriday\, 17 October 2025\n14:00–15:00 \nLecture 9: Examples\nFriday\, 17 October 2025\nTime: 16:00–17:30 \n  \nBibliography:\n[1] W. Fulton and R. Pandharipande\, Notes on stable maps and quantum cohomology\, 1997. Available at arXiv:alg-geom/9608011. \n[2] L. Katzarkov\, M. Kontsevich\, and T. Pantev\, Hodge theoretic aspects of mirror symmetry\, in From Hodge theory to integrability and TQFT tt*-geometry\, Proc. Sympos. Pure Math.\, vol. 78\, Amer. Math. Soc.\, Providence\, RI\, 2008\, pp. 87–117. \n[3] L. Katzarkov\, M. Kontsevich\, T. Pantev\, and T. Yue Yu\, Birational invariants from Hodge structures and quantum multiplication\, 2025. Available at arXiv:2508.05105. \n\nZoom link\nhttps://us06web.zoom.us/j/81931262811?pwd=gZvpjUCJTDpl5dbZfMOJcp6mWQ05MM.1
URL:https://math.bas.bg/event/%d0%bc%d1%86%d0%bc%d0%bd-%d0%bc%d0%b8%d0%bd%d0%b8%d0%ba%d1%83%d1%80%d1%81-theory-of-atoms-via-examples-%d0%bb%d0%b5%d0%ba%d1%86%d0%b8%d0%b8-8-%d0%b8-9/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251020T140000
DTEND;TZID=Europe/Sofia:20251020T153000
DTSTAMP:20260405T051717
CREATED:20251015T182437Z
LAST-MODIFIED:20251015T182437Z
UID:18339-1760968800-1760974200@math.bas.bg
SUMMARY:Семинар по особености
DESCRIPTION:Дата и час: 20.10.2025 г.\, 14:00 ч.\nМясто: Зала 578\, ИМИ – БАН \nЗаглавие на доклада: \nThe complete intersection discrepancy of curves\nДокладчик: Andrei Bengus-Lasnier (ИМИ – БАН) \nРезюме: In this talk I will introduce an invariant for reduced curves called the complete intersection discrepancy (cid for short). This numerical quantity arose naturally when trying to generalize known formulas for complete intersection curves to general curves. The cid then serves as a correction term in these formulas. \nI will present some of the cid’s basic properties and derive two formulas. The first relates basic invariants such as Milnor number\, its multiplicity and the multiplicity of its Jacobian ideal\, and generalizes a well-known result in singularity theory due to Lê\, Greuel and Teissier. The second formula is a generalization of the genus-degree formula for projective curves.\n\nThis work is in collaboration with Antoni Rangachev and Terence Gaffney.
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bf%d0%be-%d0%be%d1%81%d0%be%d0%b1%d0%b5%d0%bd%d0%be%d1%81%d1%82%d0%b8/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251024T090000
DTEND;TZID=Europe/Sofia:20251024T153000
DTSTAMP:20260405T051717
CREATED:20251021T134328Z
LAST-MODIFIED:20251021T134713Z
UID:18361-1761296400-1761319800@math.bas.bg
SUMMARY:Ден на отворените врати в КЛаДА-БГ  
DESCRIPTION:На 24.10.2025 г. от 9:00 до 15:30 в зала „Проф. Марин Дринов“ в сградата на БАН-Администрация (гр. София\, ул. „15 ноември” № 1) ще се проведе Ден на отворените врати на изследователската „Е-инфраструктура за ресурси и технологии за българското езиково и културно наследство\, интегрирана в рамките на европейските инфраструктури CLARIN и DARIAH“ (КЛаДА-БГ). \nПроф. д-р Десислава Панева-Маринова от Институт по математика и информатика БАН ще представи иновативната разработка CultIS (https://cultis.math.bas.bg/\, софтуерна платформа за интелигентно цифрово управление и представяне на големи масиви от данни и знания от хуманитаристиката и социалните науки) и нейни внедрявания. \nВнедрявания са направени за нуждите на народна библиотека „Иван Вазов“ – Пловдив\, регионална библиотека „Пейо Яворов“ – Бургас\, Централна библиотека на БАН и др. \nПРОГРАМА на Ден на отворените врати КЛаДА БГ 2025
URL:https://math.bas.bg/event/%d0%b4%d0%b5%d0%bd-%d0%bd%d0%b0-%d0%be%d1%82%d0%b2%d0%be%d1%80%d0%b5%d0%bd%d0%b8%d1%82%d0%b5-%d0%b2%d1%80%d0%b0%d1%82%d0%b8-%d0%b2-%d0%ba%d0%bb%d0%b0%d0%b4%d0%b0-%d0%b1%d0%b3/
LOCATION:Българска академия на науките\, ул. „15 ноември“ №1\, София\, София-град\, 1040\, Bulgaria
CATEGORIES:Ден на отворените врати
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20251026T093000
DTEND;TZID=Europe/Sofia:20251026T130000
DTSTAMP:20260405T051717
CREATED:20251022T180841Z
LAST-MODIFIED:20251022T180841Z
UID:18384-1761471000-1761483600@math.bas.bg
SUMMARY:Лекция на проф. Марк Сол
DESCRIPTION:Среща с д-р Марк Sol (Mark Saul) в ИМИ-БАН \nНа 26 октомври т.г. ще имаме удоволствието да чуем лекцията на д-р Марк Сол на тема: \nПътища в графи: от мостовете на Кьонигсберг през секвенирането на протеини до рисунките „на един дъх“ на Пикасо \nКъде? – в Заседателната зала на ИМИ-БАН \nКакво – кога?  \n9:30-9:55 – регистрация \n10:00-11:00 Кратко приветствие и лекция \n11:15-12:00.  –  Представяне на добри STEAM практики от страна на учители във вид на Постерна сесия без постери и голям екран (макети\, компютърни разработки\, произведения на учениците ви). \n12:00-13:00 – Скромна почерпка и раздумка с д-р Сол \nД-р Марк Сол e изтъкнат преподавател\, директор на международната изследователска програма за ученици RSI в продължение на 10 години и директор на състезанията към Математическата асоциация на Америка.  Мнозина ученици на д-р Сол впоследствие са направили значими приноси в математиката и природните науки.
URL:https://math.bas.bg/event/%d0%bb%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%bd%d0%b0-%d0%bf%d1%80%d0%be%d1%84-%d0%bc%d0%b0%d1%80%d0%ba-%d1%81%d0%be%d0%bb/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Лекция,Работен семинар
END:VEVENT
END:VCALENDAR