The Annual Scientific Session of the Department of Differential Equations and Mathematical Physics will be held on December 18, 2019, at 2:00 pm in Room 478. PROGRAM
The 2019 Annual Report Session of the Department of Algebra and Logic will be held on December 20, 2019, at 10.00 am in Room 578 of IMI-BAS. PROGRAM
The Annual Reporting Session of the Department of Operations Research, Probability and Statistics will be held on December 20, 2019, from 11:00 am to 4:00 pm in Room 403. PROGRAM
The Information Modeling Department is organizing an international webinar on Informational Modeling - Theory and Practice on October 20 and 21, 2020. Everybody is invited. UPDATED PROGRAM How to join the webinar: Please download and import the following iCalendar (.ics) files to your calendar system. Daily: https://us02web.zoom.us/meeting/tZEqceyoqT0sHtZChQxkKT8zblAazlMnF6oK/ics?icsToken=98tyKuGtqT0vGtOTth2FRpwMB4_oZ_TwtiFdgrdnvxfUGyt4VlvsNO5jM6hzPdb2 Join Zoom Meeting https://us02web.zoom.us/j/85765076642?pwd=VGpYdEJYK3Z5aWtoOW9Xd2FPRlNmQT09 Meeting ID: 857 6507 6642 Passcode: 256831 One tap mobile +35924925688,,85765076642#,,,,,,0#,,256831# Bulgaria +35932571633,,85765076642#,,,,,,0#,,256831# Bulgaria Dial by your location +359 2 492 5688 Bulgaria +359 3 257 1633 Bulgaria Meeting ID: 857 6507 6642 Passcode: 256831 Find your local number: https://us02web.zoom.us/u/kdiHw0n4tk
The National Seminar on Inquiry-based Mathematics Education will be held on November 27 - 28, 2020. The program will be announced additionally. Registration deadline: Novemer 15, 2020. For more information please visit : http://www.math.bas.bg/omi/nso/
The Mathematical Foundations of Informatics Department is organizing a national seminar with international participation on Mathematical Software and Combinatorial Algorithms The seminar will be held on December 7 and 8 and the scientific program will include talks (up to 20 minutes) and discussions. To take part in the scientific program, please send the title and abstract (up to one page) of your proposed talk to Stela Zhelezova at stela@math.bas.bg or to Iliya Bouyukliev at iliyab@math.bas.bg by November 25, 2020. The seminar will be held online via ZOOM. For more information please visit the website of the seminar: http://www.math.bas.bg/moiuser/MSCA/
The Annual Reporting Seminar of the Department of Software Technology and Information Systems will be held on December 8, 2020, at 1:00 pm. PROGRAM Everybody is invited at https://us02web.zoom.us/j/81414842643?pwd=Q25TZ2I4ZVpibG9kUVBvaTdGWm9idz09
The Annual Reporting Session of the Department of Education in Mathematics and Informatics will be held on December 14, 2020, from 09:30 am to 1:00 pm. PROGRAM Topic: Отчетна сесия за 2020 г. на секция Образование по математика и информатика Time: Dec 14, 2020 09:00 Sofia Join Zoom Meeting https://us02web.zoom.us/j/82361003776?pwd=bVMwTmNjL1JwRzRjM3dueGR6RVNPZz09
The Annual Reporting Session of the Department of Mathematical Modeling and Numerical Analysis will be held on December 14, 2020, from 09:30 am to 12:30 pm. If you wish to take part, please send an email to irina@math.bas.bg to get a Zoom link for the meeting.
The Annual Reporting Session of the Department of Operations Research, Probability and Statistics will be held on December 15, 2020 in Zoom. PROGRAM Join Zoom Meeting https://us02web.zoom.us/j/81828379085?pwd=b1crUG05dTFVMllZL0ZUL01CWk5zZz09 Meeting ID: 818 2837 9085 Passcode: 358546
The Annual Reporting Session of the Department of Operations Research, Probability and Statistics will be held on December 15, 2020, from 10:00 am to 3:00 pm via Zoom. PROGRAM Join Zoom Meeting https://us02web.zoom.us/j/84992436901?pwd=WVhxd2tVUXNXWUU0dTlwdndzKy9mZz09 Topic: Отчетна сесия на секция Изследване на операциите, вероятности и статистика Time: Dec 15, 2020 10:00 Sofia Meeting ID: 849 9243 6901 Passcode: 612900
The Annual Reporting Session of the Department of Differential Equations and Mathematical Physics will be held on December 16, 2020, at 2:00 pm via Zoom. PROGRAM Topic: Отчетна сесия секция ДУМФ Time: Dec 16, 2020 13:50 Sofia https://us02web.zoom.us/j/83528944509?pwd=eC9SMjdibGtQYjFQSmhPTkJtVnR1QT09 Meeting ID: 835 2894 4509 Passcode: 692179
The Annual Reporting Session of the Algebra and Logic Department will be held on December 18, 2020, at 9:30 am via Zoom. PROGRAM TALK ABSTRACTS Join the afternoon Zoom session from 1:00 pm: https://us02web.zoom.us/j/89351495679?pwd=UHhETERORWJKQnIyUWRaZUFiY3BqQT09 Algebra and Logic Department, IMI - BAS http://www.math.bas.bg/algebra/seminarAiL/
The Annual Reporting Session of the Mathematical Linguistics Department will be held on December 22, 2020, at 1:00 pm via Zoom. PROGRAM Topic: Годишна отчетна сесия на Секция "Математическа лингвистика" Time: Dec 22, 2020 13:00 Sofia Join Zoom Meeting https://us02web.zoom.us/j/82540117136?pwd=MEpkWVRvK2U1alpFZzlHcjBjNHhiUT09 Meeting ID: 825 4011 7136 Passcode: 498745
As part of the online seminar Problems and Methods Related to Coding Theory organized by: the Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Bulgaria the Novosibirsk State University, Novosibirsk, Russia the Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia on February 2, 2021, 1:00 pm Sofia (6:00 pm Novosibirsk, 2:00 pm Moscow) Prof. Sergey Avgustinovich, Sobolev Institute of Mathematics, Novosibirsk, Russia will deliver a talk on: Совершенные раскраски циркулянтных графов (Perfect colorings of circulant graphs). Abstract: A Cayley graph of the infinite cyclic group having generators d1, d2, d3, …, dn is called circulant. It is denoted by С∞(d1, d2, d3, …, dn). A coloring of the vertex set of a graph is called perfect if [...]
The seminar on Problems and Methods Related to Coding Theory organized by: Novosibirsk State University, Novosibirsk, Russia Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Bulgaria is inviting you to its next meeting to be held on March 2, 2021 at 1 p.m. Prof. Peter Boyvalenkov, Institute of Mathematics and Informatics, Bulgarian Academy of Sciences will deliver a talk on: Universal Bounds for Cardinality and Energy of Codes of Given Minimum and Maximum Distances Abstract. We employ signed measures that are positive definite up to certain degrees to establish Levenshtein-type upper bounds on the cardinality of codes with given minimum and maximum distances, and universal lower bounds on the [...]
The seminar on Problems and Methods Related to Coding Theory organized by: Department of Mathematical Foundations of Informatics, Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Bulgaria Novosibirsk State University, Novosibirsk, Russia Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia is inviting you to its next meeting. Assist. Prof. Ivan Mogilnykh, Novosibirsk State University, will deliver a talk on: Completely regular codes in Johnson and Grassmann graphs Abstract. Completely regular codes in Johnson and Grassmann graph are interrelated with t-designs. In this talk we give an introduction to these codes and discuss several old and recent results. Martin noted that any (k-1)-(n,k,1)-design D is a completely regular code in the Johnson graph J(n,k). Avgustinovich and Mogilnykh showed [...]
The Department of Mathematical Foundations of Informatics is organizing a seminar under the project „Strategies for improving the quality of models identified by machine learning algorithms with application in quantum tomography“. A talk will be delivered by Violeta Ivanova-Rohling and Niklas Rohling on: Quantum state tomography as a numerical optimization problem Abstract: We present a framework that formulates the quest for the most efficient quantum state tomography scheme as an optimization problem which can be solved numerically. This approach can be applied to a broad spectrum of relevant setups including measurements restricted to a subsystem. To illustrate the power of this method we present results for the six-dimensional Hilbert space constituted by a qubit-qutrit system, which could be realized e.g. by the N-14 nuclear [...]
Spectra and applications July 29 – 30, 2021 A short course by Josef Svoboda This is a survey course on the relation of the invariants of 3 manifolds and singularity theory. Using the theory of differential equations we relate classical 3 dimensional theory with modern category theory. Applications to Birational geometry and uniformization will be discussed. Programme July 29, 2021 15:00 – 15:45 Introduction 16:00 – 16:45 Thom Sebeastiani and invariants of links and Links and knots July 30, 2021 15:00 – 15:45 Examples 16:00 – 16:45 Categorifications, Ludmil Katzarkov Тhe lectures will be held in hall 404 of the Institute of Mathematics and Informatics.
ICMS-IMSA Working Seminar August 20, 2021 ICMS, Room 403, 4:30-6:30 pm, Broadcasted trough Zoom Title: On determinantal cubic hypersurfaces (after Iliev-Manivel, Beauville,...) Speaker: Prof. R. Mboro IMSA, ICMS, 4:30-5:30 pm Abstract: We give an account of the problem of writing an equation of a cubic (or other degree) hypersurface X as a (kind of) determinant of a matrix with homogeneous entries. Expressing the equation of X as a determinant is equivalent to produce an arithmetically Cohen-Macaulay vector bundle on X. The talk will focus on the cases of cubic hypersurfaces of dimension at most 8. Title: Quantum representations of fundamental groups of curves with infinite image Speaker: Prof. R. Aguilar IMSA, ICMS, 5:30-6:30 pm Abstract: We will report on some results due to Koberda-Santharoubane [...]
ICMS Seminar September 14, 2021, 4:30-5:30 pm (UCT+3), Broadcasted through Zoom The congruence property in two-dimensional rational conformal field theory, revisited Speaker: Vesselin Dimitrov, University of Toronto Abstract: In a joint work with Frank Calegari and Yunqing Tang, we use methods from transcendental number theory to prove a conjecture that goes back to Atkin and Swinnerton-Dyer, in a special case, and generalized by Mason to the following form: A vector-valued modular form on SL(2,Z) whose components have q-expansions with bounded denominators are exactly the ones for which the underlying representation of SL(2,Z) has a finite image with kernel containing the congruence subgroup of matrices reducing to the identity modulo some positive integer N. In this talk, I will outline the basic ideas of [...]
Workshop on Numerical and Symbolic Scientific Computing September 20-23, 2021, Sofia, Bulgaria organized by Institute of Information and Commnication Technologies, Bulgarian Academy of Sciences Institute of Mathematics and Informatics, Bulgarian Academy of Sciences Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna, Russia in association with Section "Biomathematics and Scientific Computing" of the Union of Bulgarian Mathematicians and Bulgarian Section of the Society for Industrial and Applied Mathematics For more information please visit: http://parallel.bas.bg/Conferences/NSSC21/
The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) at the Institute of Mathematics and Informatics, Bulgarian Academy of Sciences presents Joint ICMS & IMSA Seminar October 8, 2021, 3:30-4:30 pm Hosted by ICMS-Sofia, via Zoom Lecturer: Sebastian Torres Title: Windows and the BGMN conjecture For more information please visit: https://icms.bg/#activities Join Zoom Meeting https://us06web.zoom.us/j/82897194623?pwd=Q2duelBFejZaVDBPK2ZiV0phWk5QZz09 Meeting ID: 828 9719 4623 Passcode: 043386
The National Seminar on Inquiry-based Mathematics Education will be held on November 26 - 27, 2021. The program will be announced additionally. Registration deadline: November 14, 2021. Registration Form For more information please visit : http://www.math.bas.bg/omi/nso/
The Annual Scientific Session of the Analysis, Geometry and Topology Department will be held on December 7, 2021, at 09:30 am (UTC+2). It is dedicated to the 90-th anniversary of Professor Peter Rusev. PROGRAM Join Zoom Meeting https://us02web.zoom.us/j/88915016332?pwd=eGk0eXAzMVFYRVAvZlpRU1BSNDFUUT09 Topic: Годишна отчетна научна сесия на секция АГТ Time: Dec 7, 2021 09:30 Sofia Meeting ID: 889 1501 6332 Passcode: 703369
The Annual Scientific Session of the Algebra and Logic Department for 2021 will be held on December 10, 2021, at 9:30 am (UTC+2). PROGRAM Join the Zoom meeting via the following link: https://us02web.zoom.us/j/84156221252?pwd=S0R3MHFVeWFBMUtDbE8waFFvdUlaUT09 Topic: Отчетна сесия на секция "Алгебра и логика" за 2021 г. Time: Dec 10, 2021 09:30 Sofia Meeting ID: 841 5622 1252 Passcode: 601617 Algebra and Logic Department, IMI – BAS http://www.math.bas.bg/algebra/seminarAiL/
The Annual Scientific Session of the Mathematical Modeling and Numerical Analysis Department will be held on 13.12.2021 from 9:30 am (UTC+2) through the Zoom platform: IMI BAS is inviting you to a scheduled Zoom meeting. Topic: Годишна отчетна сесия на секция ММЧА Time: Dec 13, 2021 09:30 Sofia Join Zoom Meeting https://us02web.zoom.us/j/83745550022?pwd=SEZadnVUYmY0K2pLRGIxdzZQVEJkZz09 Meeting ID: 837 4555 0022 Passcode: 302521 PROGRAM
The next meeting of the seminar of Mathematical Foundations of Informatics organized by the Department of Mathematical Foundations of Informatics, IMI - BAS, Faculty of Mathematics and Informatics, Veliko Tranovo University, will be held on January 27, 2022, at 2 pm (UTC+2) in Zoom. A talk will be delivered by Konstantin Vorobyov, post-doctoral students at the MOI Department of IMI - BAS, on: Binary codes with two distances Резюме: In this work, we prove two conjectures from a paper on two distance codes by Boyvalenkov, Delchev, Zinoviev and Zinoviev (Discrete Math., 344(5), 112318, https://doi.org/10.1016/j. disc.2021.112318). We also prove several new upper and lower bounds on A_2(n,d1,d2) (i.e. the maximal cardinality of a binary code of length n with distances d1 < d2) and provide new [...]
The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) at the Bulgarian Academy of Sciences presents ICMS Colloquium May 17, 2022, 2:00 pm (EEST, UTC+3), IMI-BAS, Hall 403 Vladimir D. Tonchev, Michigan Technological University Coding Theory, Combinatorial Designs, and Finite Geometry Abstract. Error-correcting codes are used to protect data from random errors in satellite and wireless communication systems, audio and video recording devices, and data storage devices. A large class of codes with a wide range of applications are based on finite geometry. The most notable example of such codes are the Reed-Muller codes that are being used in deep space and mobile communications. The subject of this talk is a class of codes based on combinatorial designs. These combinatorial codes possess remarkable error-correction [...]
On June 10, 2022 (Friday) at 1:00 pm in the Conference Room of IMI a meeting of the seminar of the department of Mathematical Foundations of Informatics will be held. A talk on: Sperner’s Theorem, Voting Theory, Balancing the Graph System, Strong and Weak Subsets of the Multiset will be given by Stepan Tarasenko, Kiev Polytechnic Institute, regarding his enrollment in the PhD program. For online participation (Zoom): https://us02web.zoom.us/j/84701255174?pwd=bnVQV290cExnS2p3RVpRZDdWdFlBUT09 Meeting ID: 847 0125 5174, Passcode: 896181
9th CMAPT Workshop (Computational Mathematics and APproximation Theory) http://www.numa.uni-linz.ac.at/CMAPT/2022/ 13 - 17 June 2022, Strobl/St. Wolfgang, Austria organized by Doctoral Program Numerical Analysis and Symbolic Computation, Johannes Kepler University, Linz, Austria Johann Radon Institute for Computational and Applied Mathematics (RICAM), Austrian Academy of Sciences, Linz, Austria Institute of Computational Mathematics (NuMa), Johannes Kepler University, Linz, Austria Institute of Mathematics and Informatics (IMI), Bulgarian Academy of Sciences, Sofia, Bulgaria Topics and Goal The primary objective of the CMAPT Workshop (to be pronounced: smart) is to bring together scientists from Bulgaria and Austria working in the fields of Approximation Theory, Numerical Analysis, Symbolic Computation and CAGD. Among the goals of the workshop is the stimulation of new research cooperations which would lead to novel results. We [...]
The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) at the Bulgarian Academy of Sciences presents ICMS Colloquium June 28, 2022, 2:00 pm (EEST, Sofia time) IMI-BAS, Hall 403 Ludmila Kamenova Stony Brook University Finiteness results for hyperkaehler manifolds In this talk we are going to show that there are finitely many deformation types of hyperkaehler manifolds with fixed topological invariants such as the Fujiki constant and the discriminant of the BBF form. For hyperkaehler manifolds that admit a fibration structure it is enough to fix the degree of the polarization on the general fiber in order to obtain a finiteness result.
A meeting of the Digital Culture Seminar (organized by the Mathematical Linguistics Department) will be held on September 28, 2022, in the Conference Room of IMI - BAS, at which Assoc. Prof. Dr. Ivan Georgiev will deliver a talk and will present results regarding KLADA-BG: Ivan Georgiev, Hristina Klecherova, Georgi Vasilev. 3D digitization and presentation of digital content Everybody is invited. Topic: Семинар “Дигитална култура” Time: Sep 28, 2022 13:45 Sofia Join Zoom Meeting https://us02web.zoom.us/j/84786030076?pwd=bHQ0L1hxdjlFTjdqNEoyc3FMS0dvZz09 Meeting ID: 847 8603 0076 Passcode: 138166
The National Seminar on Inquiry-based Mathematics Education will be held on November 25 - 26, 2022. The program will be announced additionally. Registration deadline: November 13, 2022. Registration Form For more information please visit : http://www.math.bas.bg/omi/nso/
The Annual Scientific Session of the Department of Mathematical Modeling and Numerical Analysis will be held on December 12, 2022, at 9:30 am in Room 403 of IMI - BAS. Program 9:30-9:50 Kamen Ivanov, The problem for Downward Continuation 9:50-10:10 Iliya Iliev, The limit cycles in a generalized Rayleigh-Liénard oscillator 10:10-10:30 Evgenija Popova, Regularity radius for matrices with rank-one interval parameters 10:30-10:45 Coffee break 10:45-11:05 Maya Mincheva, Delay stability of reaction networks 11:05-11:25 Peter Rashkov, An optimal rapid action task in a vector-borne disease epidemic model with control constraints 11:25-11:45 Milen Borisov, Svetoslav Markov, The Exponential Decay and Outbreak Functions: Analysis and Numerical Simulation 11:45-12:00 Break 12:00-12:20 Ivan Bazhlekov, Generalized fractional bioreaction model and numerical approach. 12:20-12:40 Mihail Krastanov, On the Euler equation. 12:40-13:00 [...]
On December 5th and 12th (Monday) from 13:00 to 17:00 in Room 503, IMI-BAS will hold two-part workshop on the Horizon Europe framework programme with a specific focus on the calls of high importance for the institute. 05.12.2022 General Policies and Principles of the EU in Research and Innovation 12.12.2022 Horizon Europe and Successful Project Proposal Writing Lecturer will be Karina Angelieva, former deputy minister for education and science and former expert in the Bulgarian Permanent Representation in Brussels. Work language – English The workshop is organized under the K-TRIO project.
The Annual Scientific Session of the International Center of Mathematical Sciences (ICMS) will be held on December 12, 2022, at 2:00 pm in Room 403 of IMI - BAS. Program 14:00-14:20 Oleg Mushkarov, ICMS activities in 2022 14:20-14:40 Rodolfo Aguilar, The nilpotent quotients of quasi-Kähler manifolds with proper quasi-albanese map 14:40-15:00 Антони Рангачев, Fujita-type theorem for the local volume of a line bundle 15:00 -15:10 Break 15:10 -15:30 Andrei Bengus-Lasnier, Geometric and combinatorial interpretations for valuations 15:30 - 15:50 Marin Genov, On the Jacobian conjecture in characteristic 0 for certain polynomial maps of degree 2 and 3 15:50 - 16:00 Break 16:00 - 16:20 Sebastien Torres, Semiorthogonal decompositions on moduli spaces 16:20 - 16:40 Danila Cherkashin, On stability of the spanning trees enumerator 16:40 - 17:00 Dimitar Kodjabachev, Picard [...]
The Annual Scientific Session of the Information Modeling Department will be held on December 13, 2022, Tuesday, at 9:00 am in Room 503 of IMI - BAS. PROGRAM Join Zoom Meeting https://us02web.zoom.us/j/86405941298?pwd=NEQreG9jc1BrOVRHeCsvVzZ3MHZkUT09 Meeting ID: 864 0594 1298 Passcode: 222430
The annual scientific session of the department of Software Technology and Information Systems will be held on December 13, 2022, at 10:00 am in Room 278 of IMI - BAS. The session will be streamed (Zoom ID: 824 0371 8724, Passcode: 252058) and everybody is invited. PROGRAM
The annual scientific session of the Department of Operations Research, Probability and Statistics will be held on December 20, 2022 (Tuesday), at 10:00 am in Room 503 of IMI - BAS. PROGRAM
The annual scientific session of the Department of Analysis, Geometry and Topology will be held on December 20, 2022 (Tuesday), at 11:30 am in Room 478 of IMI - BAS. PROGRAM
The annual scientific session of the Department of Mathematical Linguistic will be held on December 20, 2022, Tuesday, at 1:00 pm in Room 278 of IMI - BAS. PROGRAM
The annual scientific session of the Department of Differential Equations and Mathematical Physics will be held on December 21, 2022, at 1:00 pm, in Room 478 of IMI. Everybody is invited. PROGRAM Join Zoom Meeting https://us02web.zoom.us/j/85112407201?pwd=RHZocFk0NjV2R003UWJEZzVxMXdGUT09 Meeting ID: 851 1240 7201 Passcode: 783002
A joint seminar of the International Center for Mathematical Sciences and the Department of Mathematical Foundations of Informatics will be held on Tuesday, January 24, 2023, at 3:00 pm. Speaker: Maryam Bajalan Title: Linear and Cyclic Codes over Rings Abstract: The study of codes over the rings (ring-linear codes) attracted great interest after the work of Calderbank, Hammons, Kumar, Sloane, and Sole in the early 1990s. In this seminar, the basic theory of linear codes over finite commutative rings will be presented including the importance of codes over rings, various kinds of rings for ring-linear coding theory, the weight functions on finite rings, MacWilliams equivalence theorem and the connection between these codes and codes over fields via the Gray maps. Moreover, the cyclic codes over finite [...]
A joint seminar of the International Center for Mathematical Sciences and the Department of Mathematical Foundations of Informatics will be held on Tuesday, January 31, 2023, at 3:00 pm, in Room 403 of IMI - BAS. Speaker: Prof. Nikolaj Glazunov, IMI - BAS, Institute of Cybernetics, Kiev. Title: On optimal packing of Minkowski balls and applications Abstract: We investigate lattice packings of Minkowski balls and domains. By results of the proof of Minkowski conjecture about the critical determinant we divide the balls and domains on 3 classes: Minkowski, Davis and Chebyshev-Cohn. The optimal lattice packings of the balls and domains are obtained. The minimum areas of hexagons inscribed in the balls and domains and circumscribed around them are given. These results lead to algebro-geometric [...]
The next lecture of the Course in Algebraic Geometry at the ICMS will be delivered, exceptionally, on February 6, 2023, at 12:15 pm in Room 403 of IMI - BAS.
A joint seminar of the International Center for Mathematical Sciences and the Department of Analysis, Geometry and Topology will be held on Tuesday, February 14, 2023, at 3:00 pm, in Room 403 of IMI - BAS. Speaker: Assoc. Prof. Todor Popov, INRNE, Bulgarian Academy of Sciences & AUBG. Title: Jordan algebra conformal toolbox Abstract
A joint seminar of the International Center for Mathematical Sciences and the Department of Analysis, Geometry and Topology will be held on Tuesday, February 21, 2023, at 2:00 pm, in Room 403 of IMI - BAS. Speaker: Dr. Valdemar Tsanov, IMI - BAS. Title: Variations of GIT-quotients of flag varieties Abstract
A joint seminar of the International Center for Mathematical Sciences and the Department of Mathematical Foundations of Informatics will be held on Tuesday, March 7, 2023, at 2:00 pm, in Room 403 of IMI - BAS. Speaker: Dr. Alexandr Polyanskii, IMI - BAS. Title: Plank Problems: Discrete Geometry and Convexity Abstract: The set of points lying between two parallel lines in the plane is called a plank. Given a convex region C in the plane, what is the smallest combined width of a finite collection of planks that cover C? What happens in higher dimensions? In the 50s, Thoger Bang answered this innocent question of Alfred Tarski and opened a box with many deceptively simple-looking problems. In my talk, I will overview progress in the [...]
A workshop "Recent developments in Hodge theory" organized by the Institute of the Mathematical Sciences of the Americas (IMSA) and the International Center for Mathematical Sciences (ICMS-Sofia) will be held at IMI-BAS on August 9, 10 and 11. The program as well as titles and abstracts of the talks are available at: https://simons.icms.bg/event/recent-developments-in-hodge-theory/ PROGRAM The talks by Phillip Griffiths, Institute for Advanced Study, USA Ernesto Lupercio, Cinvestav-IPN, Mexico Vestislav Apostolov, Université du Québec à Montréal, Canada and Institute of Mathematics and Informatics, Sofia, Bulgaria Gueo Grantcharov, Florida International University, USA are part of the Consortium Distinguished Lecture Series.
The Workshop on Mathematical Perspectives on Immunobiology brings together researchers who do research on one of the most complex systems of the human organism: the immune system.
A joint meeting of the Analysis, Geometry, and Topology Seminar and the Algebra and Logic Seminar will be held on September 26, 2023, at 2:00 pm in Room 478 of IMI - BAS. A talk on Burau Representation and Application to Reducibility and Exchangeability of Braids will be delivered by Alexander Stоimenov, Dongguk University, Republic of Korea. Abstract. I will give an introduction to the braid groups, closure operation, Markov theorem, and exchange move. Then I will introduce the Burau representation, and discuss its application to reducibiliy and exchangeability of braids.
The Annual Scientific Session of the Analysis, Geometry and Topology Department will be held on December 4 (Monday) at 1:00 pm in room 478 of IMI-BAN. PROGRAM
The Annual Scientific Session of the Mathematical Modeling and Numerical AnalysisDepartment will be held on December 14, 2023 - Thursday, in room 503 at 10:00 a.m. Dedicated to the memory of Prof. Svetoslav Markov (1943 - 2023) Program 10:00 -10:20 Михаил Кръстанов, Маргарита Николова, "A sufficient condition for small-time local controllability" 10:20 -10:40 Петър Рашков, Владимира Суванджиева, "Модел на НЕТоза в ранния стадий на Systhemic Lupus Ertyhematosus" 10:40 -11:00 Ирина Георгиева, Clemens Hofreither, "Computation of polynomial and rational approximations in complex domains" 11:00-11:20 Кафе пауза 11:20- 11:40 Евгения Попова, "Chemical reaction networks in terms of proper and directed intervals" 11:40- 12:00 Иван Бажлеков, "Fractional derivatives in the mathematical modelling II." 12:00- 12:20 Невена Илиева-Литова, "Моделиране на зарядовата зависимост на биологичната активност на линейни антимикробни [...]
The Annual Scientific Session of the Algebra and Logic Department for 2023 will be held on December 15, 2023, at 9:55 am in Room 578 of IMI - BAS and online via Zoom. Link to the Zoom session: https://us02web.zoom.us/j/88421224798?pwd=UFh4d3hFM2lFN0RZVThEQmRoSVZ6QT09 PROGRAMME 9:55 – 10:00 Opening 10:00 – 10:30 Ivan Chipchakov: Diophantine and cohomological dimensions of fields 10:30 – 10:50 Elitza Hristova: Some new results on the GL(n)-module structure of relatively free algebras and applications to noncommutative invariant theory 10:50 – 11:00 Break 11:00 – 11:30 Hristo Iliev: On the Tschirnhausen module of multiple coverings and some applications 11:30 – 11:50 Veselin Filev: A Sampling Approach for Tackling Large-Scale Linear Optimization Problems 11:50 – 11:55 Break 11:55 – 12:15 Marin Genov: Some Aspects of Holomorphy over Finite-Dimensional Commutative [...]
The Annual Scientific Session of the International Center for Mathematical Sciences - Sofia will be held on December 15, 2023 – Friday, in room 403 at 01:00 P.M. Programme 13:00-13:15 Oleg Mushkarov, Opening remarks 13:15-13:30 Valdemar Tsanov, On nonconvexity of momentum maps 13:30-13:45 Mikhail Shkolnikov, Exact solutions in harmonic sandpile dynamics 13:45–14:00 Break 14:00-14:15 Andrei Bengus-Lasnier, Computing Milчетна чnor numbers with multiplicities for curves 14:15-14:30 Antoni Rangachev, Flat families of curves 14:30-14:45 Jiachang Xu, Aspects of non-Archimedean geometry 14:45-15:00 Break 15:00-15:15 Maryam Bajalan, Polycyclic and multivariable codes over finite rings 15:15-15:30 Hamed Pejhan, Wigner’s elementary systems in de Sitter spacetime and their holographic interpretation 15:30-15:45 Break 15:45–16:00 Yingdi Qin, [...]
The Annual Scientific Session of the Department of Mathematics and Informatics Education will be held on December 18, 2023, at 1:00 pm in Room 478 of the Institute of Mathematics and Informatics. Please send your talk proposals to lazarov@math.bas.bg and albena@math.bas.bg no later than December 8, 2023. PROGRAM
The Annual Scientific Session of the Operations Research, Probability and Statistics Department will be held on December 19, 2023 (Tuesday) at 10:00 a.m. in room 503 of IMI-BAN. PROGRAM First part 10:00 - 10:20 Dragomir Nedelchev Exploiting the gap between real-world and risk-neutral probability measures 10:20 - 10:40 Hristo Sariev Different characterizations of exchangeable measure-valued Pólya urn sequences 10:40 - 11:00 MihailKrastanov, Nadezhda Ribarska Необходими условия за оптималност, използващи мерки за некомпактност 11:00 - 11:20 Tsvetelin Zaevski Относно някои композитни Американски опции 11:20 - 11:40 Maroussia Bojkiva, Nikolay Yanev Многотипни разклоняващи се процеси с нехомогенна имиграция 11:40 - 12:00 Mladen Savov Факторизация на Винер-Хопф Second Part 13:00 - 13:20 Penka Mayster, Assen Tchorbadjieff Total progeny of the Negative-Binomial reproduction of particles described by the [...]
The Differential Equations and Mathematical Physics Department will held its ANNUAL SCIENTIFIC SESSION on December 20, 2023, in Room 478 of IMI. 14:00 – 14:15 Чл.-кор. дфн Стойчо Язаджиев: Black hole no-hair theorem for self-gravitating time-dependent spherically symmetric multiple scalar fields 14:14 – 14:30 Доц. д-р Тихомир Вълчев Квазирационални решения на едно интегруемо обобщение на уравнението за феромагнетика на Хайзенберг 14:40 – 14:45 Доц. д-р Александър Стефанов: New type of dNLS equations related to Kac-Moody algebra A2(1) 14:45 – 15:00 Мат. д-р Милен Иванов: contact defects / анализ на данни за американските консули 1776-1865 15:00 – 15:15 Доц. д-р Георги Бояджиев: Пространствено-зависим SEIR модел в епидемиологията.
Annual Scientific Session of the Mathematical Linguistics Department of IMI - BAS December 22, 2023, 10:00 am 10:00 - 10:15 Иван Держански, Олена Сирук,от Българските неопределителни местоимения с елемента си и съответствията им в украински език 10:15 - 10:30 Александра Николова, Интерактивно обучение и сериозни игри 10:30 - 10:45 Иван Крачанов, Игровизиран краудсорсинг в помощ на семантичната трансформация на дигиталните библиотеки 10:45 - 11:00 Галина Богданова, Тодор Тодоров, Николай Ноев, Дигитална достъпност за хора със специални потребности: проучвания, концепции и модели 11:00 - 11:15 Евгения Николова, Стандарти за дигитализация на културно-историческото наследство и тяхната роля в правната сигурност 11:15 - 11:30 Емануела Митрева, Подходи за персонализация при изучаване на културното наследство 11:30 - 11:45 Десислава Панева-Маринова, Максим Гойнов, Радослав Павлов, Детелин Лучев, CultIS: софтуерна [...]
