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DTSTART:20260329T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260605T160000
DTEND;TZID=Europe/Sofia:20260605T170000
DTSTAMP:20260606T112350
CREATED:20260517T170022Z
LAST-MODIFIED:20260517T175716Z
UID:19305-1780675200-1780678800@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Ivan Dimitrov\, Lecture 5
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 19 and 21\, 2026 (15:00–16:00 Sofia time) and June 1\, 3 and 5\, 2026 (16:00–17:00 Sofia time)\, Room 403\, IMI – BAS \nLecturer: \nIvan Dimitrov (Queen’s University\, Canada) \nTitle:\n \nRoot systems\, generalizations and applications\nRoot systems were introduced by Wilhelm Killing in 1889 as a tool for classifying Lie algebras. Since then\, they have become ubiquitous\, appearing in various contexts in seemingly unrelated areas of Mathematics. In this lecture series\, Ivan Dimitrov introduces and studies root systems and defines a generalization of root systems. He explains how this more general structure applies to various problems\, e.g. hyperplane arrangements. Finally\, he introduces and studies inversion sets of roots. The exposition is mostly self-contained\, assuming Linear algebra and some Group theory background. \nhttps://icms.bg/event/root-systems-ivan-dimitrov-lecture-series/
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-ivan-dimitrov/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260603T160000
DTEND;TZID=Europe/Sofia:20260603T170000
DTSTAMP:20260606T112350
CREATED:20260517T165349Z
LAST-MODIFIED:20260517T180330Z
UID:19294-1780502400-1780506000@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Ivan Dimitrov\, Lecture 4
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 19 and 21\, 2026 (15:00–16:00 Sofia time) and June 1\, 3 and 5\, 2026 (16:00–17:00 Sofia time)\, Room 403\, IMI – BAS \nLecturer: \nIvan Dimitrov (Queen’s University\, Canada) \nTitle:\n \nRoot systems\, generalizations and applications\nRoot systems were introduced by Wilhelm Killing in 1889 as a tool for classifying Lie algebras. Since then\, they have become ubiquitous\, appearing in various contexts in seemingly unrelated areas of Mathematics. In this lecture series\, Ivan Dimitrov introduces and studies root systems and defines a generalization of root systems. He explains how this more general structure applies to various problems\, e.g. hyperplane arrangements. Finally\, he introduces and studies inversion sets of roots. The exposition is mostly self-contained\, assuming Linear algebra and some Group theory background. \nhttps://icms.bg/event/root-systems-ivan-dimitrov-lecture-series/
URL:https://math.bas.bg/event/copy-icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-ivan-dimitrov/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260602T130000
DTEND;TZID=Europe/Sofia:20260602T143000
DTSTAMP:20260606T112350
CREATED:20260527T072127Z
LAST-MODIFIED:20260527T072127Z
UID:19433-1780405200-1780410600@math.bas.bg
SUMMARY:Joint seminar of ICMS and AGT
DESCRIPTION:Date and time: Tuesday\, June 2-nd\, 2026\, 13:00\, room 403 IMI-BAS \nLecturer: Bogdan Djordjevic\, (Serbian Academy of Arts and Sciences\, visitor at ICMS\, IMI-BAS) \nTitle: Application of the Laplace transform for evaluating sums of hyperharmonic-like series in Banach algebras and modules \nAbstract: In this talk it will be shown how the Laplace transform (in respective Banach spaces) can be utilized for evaluating sums of Banach-space-valued series. We demonstrate the technique on various abstract generalizations of the numerical hyperharmonic series\, including noncommutative setting and non-invertible setting. As an application\, we obtain new necessary consistency condition for the Sylvester equation \(\)ax-xb=c[\latex].
URL:https://math.bas.bg/event/joint-seminar-of-icms-and-agt/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260601T160000
DTEND;TZID=Europe/Sofia:20260601T170000
DTSTAMP:20260606T112350
CREATED:20260513T104727Z
LAST-MODIFIED:20260517T180237Z
UID:19254-1780329600-1780333200@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Ivan Dimitrov\, Lecture 3
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 19 and 21\, 2026 (15:00–16:00 Sofia time) and June 1\, 3 and 5\, 2026 (16:00–17:00 Sofia time)\, Room 403\, IMI – BAS \nLecturer: \nIvan Dimitrov (Queen’s University\, Canada) \nTitle:\n \nRoot systems\, generalizations and applications\nRoot systems were introduced by Wilhelm Killing in 1889 as a tool for classifying Lie algebras. Since then\, they have become ubiquitous\, appearing in various contexts in seemingly unrelated areas of Mathematics. In this lecture series\, Ivan Dimitrov introduces and studies root systems and defines a generalization of root systems. He explains how this more general structure applies to various problems\, e.g. hyperplane arrangements. Finally\, he introduces and studies inversion sets of roots. The exposition is mostly self-contained\, assuming Linear algebra and some Group theory background. \nhttps://icms.bg/event/root-systems-ivan-dimitrov-lecture-series/
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-ivan-todorov/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260601T141500
DTEND;TZID=Europe/Sofia:20260601T153000
DTSTAMP:20260606T112350
CREATED:20260522T100139Z
LAST-MODIFIED:20260522T100905Z
UID:19419-1780323300-1780327800@math.bas.bg
SUMMARY:Seminar in Operations Research\, Probability and Statistics of IMI-BAS and Optimization Seminar of FMI-SU
DESCRIPTION:On June 1st\, 2026 (Monday) at 2:15 pm in room 503 of IMI-BAS\na joint meeting will be held of the Operations Research\, Probability and Statistics Seminar of IMI-BAS\nand the Optimization Seminar of the Faculty of Mathematics and Informatics\, Sofia University. \nA talk on: \nOn the subregularity of mappings associated to optimization problems\nwill be delivered by Alberto Dominguez Corella\, University of Graz\, Austria. \nAbstract: This talk is meant as a nontechnical discussion on the concept of metric subregularity and its application to the study of stability in optimization problems. It features equivalences between the property and local error bounds\, as well as theoretical applications\, e.g.\, discretization\, approximation\, and differentiation with respect to parameters. We describe several concrete applications\, including inverse problems and optimal control. The talk will be based on several joint works with Nicolai Jork\, Vladimir Veliov\, Trı Minh Le and Eduardo Casas. \nZoom link:\nhttps://us02web.zoom.us/j/82844903143?pwd=iX70nEcAaqDm9sMqMNYGtDY5zS7F2r.1\n  \nEveryone interested in the topic is cordially invited to participate.
URL:https://math.bas.bg/event/seminar-in-operations-research-probability-and-statistics-5/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Department%20of%20Operations%20Research%2C%20Probability%20and%20Statistics":MAILTO:jeni@math.bas.bg;
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260526T100000
DTEND;TZID=Europe/Sofia:20260526T113000
DTSTAMP:20260606T112350
CREATED:20260522T001544Z
LAST-MODIFIED:20260522T001742Z
UID:19405-1779789600-1779795000@math.bas.bg
SUMMARY:Digital Culture Seminar
DESCRIPTION:The next meeting of the Digital Culture Seminar \nwill be held on May 26\, 2026 (Tuesday) at 10:00 a.m. in Room 278 of IMI – BAS. \nA talk on: \nLogics for Strategic Reasoning about Socially Interacting Rational Agents\nwill be delivered by Valentin Goranko\, Stockholm University\, Sweden. \nAbstract: An important aspect of socially interacting rational agents are the strategic abilities of individual agents and groups (coalitions) of agents to guarantee the achievement of their desired goals\, while acting and interacting within an entire society of agents. Several logical systems have been proposed for formalising and capturing such reasoning were introduced the early 2000s\, starting with the Coalition Logic (CL)\, the Alternating Time Temporal Logic (ATL)\, and some extensions of these. \nCoalition Logic provides a natural\, but rather restricted perspective: the agents in the proponent coalition are viewed as acting in full cooperation with each other but in complete opposition to all agents outside of the coalition\, which are thus treated as adversaries. The Alternating Time Temporal Logic extends Coalition Logic with temporal operators allowing for expressing long-term temporised goals. \nThe strategic interaction in real societies is much more complex\, usually involving various patterns combining cooperation and competition. To capture these\, more expressive and versatile logical frameworks are needed. \nIn this talk I will give a brief overview of some of these logics and will illustrate their use with some examples. \nZoom link:\nhttps://us06web.zoom.us/j/82219689652?pwd=VbWffI8RD4aPYC8TaNrasukEW7uePV.1
URL:https://math.bas.bg/event/digital-culture-seminar-4/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260526
DTEND;VALUE=DATE:20260531
DTSTAMP:20260606T112350
CREATED:20260512T130124Z
LAST-MODIFIED:20260512T130124Z
UID:19244-1779753600-1780185599@math.bas.bg
SUMMARY:International Conference on Mathematical Quantum Field Theory
DESCRIPTION:Mathematical Quantum Field Theory\n\n\n\nInternational conference in memory of Ivan Todorov\n\n\nStart date: 26 May 2026\nEnd date: 30 May 2026\nEvent location: Hall “Prof. Marin Drinov”\, BAS\, Sofia\, Bulgaria \n\n\nOrganized by the Institute for Nuclear Research and Nuclear Energy (INRNE) and the International Center for Mathematical Sciences at the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences \nThe conference encompasses a wide range of modern topics at the intersection of physics and mathematics\, including conformal field theory\, vertex operator algebras\, integrable systems\, supersymmetry\, gauge theory\, gravity\, cosmology\, quantum information\, and the mathematical structures that connect them. \nIvan Todorov (1933-2024) was a leading Bulgarian theoretical physicist whose contributions to mathematical physics\, conformal field theory\, and the algebraic approach to quantum field theory shaped generations of researchers. He spent his career at the Institute for Nuclear Research and Nuclear Energy (INRNE-BAS) and held many fruitful collaborations with colleagues around the world. This conference brings together former students\, collaborators\, and friends to celebrate his scientific legacy and international recognition. \nRead more on https://indico.global/event/16645/overview
URL:https://math.bas.bg/event/international-conference-on-mathematical-quantum-field-theory/?lang=en
LOCATION:Bulgarian Academy of Sciences\, 1\, 15th November Str.\, Sofia\, Sofia City\, 1040\, Bulgaria
CATEGORIES:Conference
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260522T160000
DTEND;TZID=Europe/Sofia:20260522T170000
DTSTAMP:20260606T112350
CREATED:20260517T172750Z
LAST-MODIFIED:20260517T172916Z
UID:19329-1779465600-1779469200@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Gordana Todorov\, Lecture 5
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 18 to May 22\, 2026 (16:00–17:00 Sofia time) \, Room 403\, IMI – BAS \nLecturer: \nGordana Todorov (Northeastern University)\, Boston\, USA \nTitle:\n \nAlgebras and Categories\nThe five lectures cover: (1) quiver representations\, Gabriel\, Dlab\, Ringel — Dynkin diagrams\, Auslander–Reiten theory; (2) cluster algebras and cluster categories; (3) higher Auslander algebras and cluster tilting subcategories; (4) preprojective algebras and higher preprojective algebras; (5) preprojective structure on subcategories. \n\nAlgebras and Categories — a lecture series by Gordana Todorov
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-gordana-todorov-lecture-5/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260521T160000
DTEND;TZID=Europe/Sofia:20260521T170000
DTSTAMP:20260606T112350
CREATED:20260517T172511Z
LAST-MODIFIED:20260517T173803Z
UID:19323-1779379200-1779382800@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Gordana Todorov\, Lecture 4
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 18 to May 22\, 2026 (16:00–17:00 Sofia time) \, Room 403\, IMI – BAS \nLecturer: \nGordana Todorov (Northeastern University)\, Boston\, USA \nTitle:\n \nAlgebras and Categories\nThe five lectures cover: (1) quiver representations\, Gabriel\, Dlab\, Ringel — Dynkin diagrams\, Auslander–Reiten theory; (2) cluster algebras and cluster categories; (3) higher Auslander algebras and cluster tilting subcategories; (4) preprojective algebras and higher preprojective algebras; (5) preprojective structure on subcategories. \n\nAlgebras and Categories — a lecture series by Gordana Todorov
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-gordana-todorov-lecture-4/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260521T150000
DTEND;TZID=Europe/Sofia:20260521T160000
DTSTAMP:20260606T112350
CREATED:20260513T104016Z
LAST-MODIFIED:20260517T180208Z
UID:19250-1779375600-1779379200@math.bas.bg
SUMMARY:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics - Ivan Dimitrov\, Lecture 2
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 19 and 21\, 2026 (15:00–16:00 Sofia time) and June 1\, 3 and 5\, 2026 (16:00–17:00 Sofia time)\, Room 403\, IMI – BAS \nLecturer: \nIvan Dimitrov (Queen’s University\, Canada) \nTitle:\n \nRoot systems\, generalizations and applications\nRoot systems were introduced by Wilhelm Killing in 1889 as a tool for classifying Lie algebras. Since then\, they have become ubiquitous\, appearing in various contexts in seemingly unrelated areas of Mathematics. In this lecture series\, Ivan Dimitrov introduces and studies root systems and defines a generalization of root systems. He explains how this more general structure applies to various problems\, e.g. hyperplane arrangements. Finally\, he introduces and studies inversion sets of roots. The exposition is mostly self-contained\, assuming Linear algebra and some Group theory background. \nhttps://icms.bg/event/root-systems-ivan-dimitrov-lecture-series/
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-2/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260520T161500
DTEND;TZID=Europe/Sofia:20260520T173000
DTSTAMP:20260606T112350
CREATED:20260508T121204Z
LAST-MODIFIED:20260508T125551Z
UID:19219-1779293700-1779298200@math.bas.bg
SUMMARY:National Mathematics Colloquium
DESCRIPTION:UNION OF BULGARIAN MATHEMATICIANS \nINSTITUTE OF MATHEMATICS AND INFORMATICS\, BULGARIAN ACADEMY OF SCIENCES \n\nNATIONAL MATHEMATICS COLLOQUIUM\nThe next meeting of the National Mathematics Colloquium will be held on May 20\, 2026 (Wednesday) at 4:15 pm EET (UTC +2) in the Conference Room of IMI – BAS. \nA talk on: \nGeometry of Twistor Spaces\nwill be delivered by Prof. Gueo Grantcharov\,\nInstitute of Mathematics and Informatics\, Bulgarian Academy of Sciences.\n \n  \nEverybody is invited. \n 
URL:https://math.bas.bg/event/national-mathematics-colloquium-23/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Union%20of%20Bulgarian%20Mathematicians":MAILTO:smb.sofia@gmail.com
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260520T160000
DTEND;TZID=Europe/Sofia:20260520T170000
DTSTAMP:20260606T112350
CREATED:20260517T172120Z
LAST-MODIFIED:20260517T173951Z
UID:19320-1779292800-1779296400@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Gordana Todorov\, Lecture 3
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 18 to May 22\, 2026 (16:00–17:00 Sofia time) \, Room 403\, IMI – BAS \nLecturer: \nGordana Todorov (Northeastern University)\, Boston\, USA \nTitle:\n \nAlgebras and Categories\nThe five lectures cover: (1) quiver representations\, Gabriel\, Dlab\, Ringel — Dynkin diagrams\, Auslander–Reiten theory; (2) cluster algebras and cluster categories; (3) higher Auslander algebras and cluster tilting subcategories; (4) preprojective algebras and higher preprojective algebras; (5) preprojective structure on subcategories. \n\nAlgebras and Categories — a lecture series by Gordana Todorov
URL:https://math.bas.bg/event/copy-icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-gordana-todorov-lecture-3/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260520T140000
DTEND;TZID=Europe/Sofia:20260520T153000
DTSTAMP:20260606T112350
CREATED:20260517T124507Z
LAST-MODIFIED:20260517T164859Z
UID:19290-1779285600-1779291000@math.bas.bg
SUMMARY:National Seminar on Probability and Statistics
DESCRIPTION:The next meeting of the \nNational Seminar on Probability and Statistics\n \nwill be held on May 20\, 2026\, at 2:00 p.m. in Room 503 of the Institute of Mathematics and Informatics. \nA talk on: \nFinite time blowup and existence of global solutions of a semi-linear stochastic partial differential equation with fractional noise\nwill be delivered by \nEkaterina Todorova Kolkovska (Center for Research in Mathematics Guanajuato\, Mexico). \nAbstract: We consider a stochastic partial differential equation driven by fractional Brownian motion with Hurst parameter H greater or equal to 1/2 on a bounded domain with smooth boundary and Dirichlet boundary conditions. By means of an associated random partial differential equation\, lower and upper bounds for the blowup time of the solution are given. Sufficient conditions for blowup in finite time and for the existence of a global solution are deduced in terms of the parameters of the equation. For the case H = 1/2 (i.e. for Brownian motion) estimates for the probability of blowup in finite time are given in terms of the laws of exponential functionals of Brownian motion. \nMore information about the talk can be found on the seminar website:\nhttp://www.math.bas.bg/~statlab/NSPS/
URL:https://math.bas.bg/event/national-seminar-on-probability-and-statistics-45/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Institute%20of%20Mathematics%20and%20Informatics%2C%20BAS":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260520
DTEND;VALUE=DATE:20260521
DTSTAMP:20260606T112350
CREATED:20260519T111256Z
LAST-MODIFIED:20260519T113216Z
UID:19387-1779235200-1779321599@math.bas.bg
SUMMARY:First International Conference “Responsible Creation of Artificial General Intelligence”
DESCRIPTION:The Institute of Mathematics and Informatics is pleased to announce RC-AGI 2026. This is an international conference jointly organized by our institute and the South-West University “Neofit Rilski”. \n\nConference objectives: \nMankind is on the verge of its most important discovery\, one that will fundamentally change our life and future. The creation of AGI is similar to letting the genie out of the bottle. In fairy tales there is usually only one bottle and the question is whether to open it or not. With AGI the opening the bottle is inevitable because many researchers and international companies are working on its creation and no one can stop or prohibit them from creating it. Furthermore\, when we are about to let the AGI genie out of the bottle\, we can choose between many bottles in which different genies reside. It would be irresponsible to simply open a random bottle and release some genie without caring about the goals which that genie will pursue. The least we should want is to ensure that the genie will obey us\, because otherwise we will face catastrophic consequences. \n\nWebsite: https://dobrev.com/agi/ \n\nKey Topics: \n· Definition of AGI: Is AGI a computer program and if yes\, what are the characteristics of that program? \n· Is there any difference between AGI and Superintelligence? Will we first create intelligence that is at a human level and only after time will incomparably greater intelligence appear? \n· How will the world look like when AGI is here?
URL:https://math.bas.bg/event/first-international-conference-responsible-creation-of-artificial-general-intelligence/?lang=en
LOCATION:Университетски център „Бачиново“ – Благоевград\, 42°01'59.6"N 23°07'46.6"E\, Благоевград\, Bulgaria
CATEGORIES:Conference
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260519T160000
DTEND;TZID=Europe/Sofia:20260519T170000
DTSTAMP:20260606T112350
CREATED:20260517T171429Z
LAST-MODIFIED:20260517T173611Z
UID:19314-1779206400-1779210000@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Gordana Todorov\, Lecture 2
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 18 to May 22\, 2026 (16:00–17:00 Sofia time) \, Room 403\, IMI – BAS \nLecturer: \nGordana Todorov (Northeastern University)\, Boston\, USA \nTitle:\n \nAlgebras and Categories\nThe five lectures cover: (1) quiver representations\, Gabriel\, Dlab\, Ringel — Dynkin diagrams\, Auslander–Reiten theory; (2) cluster algebras and cluster categories; (3) higher Auslander algebras and cluster tilting subcategories; (4) preprojective algebras and higher preprojective algebras; (5) preprojective structure on subcategories. \n\nAlgebras and Categories — a lecture series by Gordana Todorov
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-gordana-todorov-lecture-2/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260519T150000
DTEND;TZID=Europe/Sofia:20260519T160000
DTSTAMP:20260606T112350
CREATED:20260513T103821Z
LAST-MODIFIED:20260517T180125Z
UID:19248-1779202800-1779206400@math.bas.bg
SUMMARY:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics - Ivan Dimitrov\, Lecture 1
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 19 and 21\, 2026 (15:00–16:00 Sofia time) and June 1\, 3 and 5\, 2026 (16:00–17:00 Sofia time)\, Room 403\, IMI – BAS \nLecturer: \nIvan Dimitrov (Queen’s University\, Canada) \nTitle:\n \nRoot systems\, generalizations and applications\nRoot systems were introduced by Wilhelm Killing in 1889 as a tool for classifying Lie algebras. Since then\, they have become ubiquitous\, appearing in various contexts in seemingly unrelated areas of Mathematics. In this lecture series\, Ivan Dimitrov introduces and studies root systems and defines a generalization of root systems. He explains how this more general structure applies to various problems\, e.g. hyperplane arrangements. Finally\, he introduces and studies inversion sets of roots. The exposition is mostly self-contained\, assuming Linear algebra and some Group theory background. \nhttps://icms.bg/event/root-systems-ivan-dimitrov-lecture-series/
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260519T100000
DTEND;TZID=Europe/Sofia:20260519T113000
DTSTAMP:20260606T112350
CREATED:20260417T130924Z
LAST-MODIFIED:20260417T130924Z
UID:19126-1779184800-1779190200@math.bas.bg
SUMMARY:Digital Culture Seminar
DESCRIPTION:The next meeting of the Digital Culture Seminar \nwill be held on May 19\, 2026 (Tuesday) at 10:00 a.m. in Room 256 of IMI – BAS. \nA talk on: \nCompeting Conceptions of AGI\nwill be delivered by Pei Wang (Temple University\, USA)\, Edior-in-Chief of the Journal of Artificial General Intelligence. \nAbstract: While the term “Artificial General Intelligence” (AGI) has been used to identify a research field for 20 years\, a consensus on its goal remains controversial. These divergent interpretations are not merely philosophical\, as they lead to fundamentally different research agendas and engineering methodologies. In this talk\, the NARS (Non-Axiomatic Reasoning System) project is introduced\, with an outline of its assumptions\, representations\, inference rules\, and working process. NARS offers a fundamentally different vision of AGI than the one implied by today’s LLMs.
URL:https://math.bas.bg/event/digital-culture-seminar-3/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260518T160000
DTEND;TZID=Europe/Sofia:20260518T170000
DTSTAMP:20260606T112350
CREATED:20260517T170937Z
LAST-MODIFIED:20260517T175827Z
UID:19309-1779120000-1779123600@math.bas.bg
SUMMARY:ICMS Distinguished Lecture Series in Representation Theory and Mathematical Physics - Gordana Todorov\, Lecture 1
DESCRIPTION:ICMS Distinguished Lecture series in Representation Theory and Mathematical Physics\nDate and place: \nMay 18 to May 22\, 2026 (16:00–17:00 Sofia time) \, Room 403\, IMI – BAS \nLecturer: \nGordana Todorov (Northeastern University)\, Boston\, USA \nTitle:\n \nAlgebras and Categories\nThe five lectures cover: (1) quiver representations\, Gabriel\, Dlab\, Ringel — Dynkin diagrams\, Auslander–Reiten theory; (2) cluster algebras and cluster categories; (3) higher Auslander algebras and cluster tilting subcategories; (4) preprojective algebras and higher preprojective algebras; (5) preprojective structure on subcategories. \n\nAlgebras and Categories — a lecture series by Gordana Todorov
URL:https://math.bas.bg/event/icms-distinguished-lecture-series-in-representation-theory-and-mathematical-physics-gordana-todorov-1-2/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar,Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260515
DTEND;VALUE=DATE:20260518
DTSTAMP:20260606T112350
CREATED:20260512T125019Z
LAST-MODIFIED:20260512T125019Z
UID:19236-1778803200-1779062399@math.bas.bg
SUMMARY:International Conference Celebrating Women in Representation Theory
DESCRIPTION:The International Center for Mathematical Sciences – Sofia (ICMS-Sofia) hosts an international conference which aims to celebrate the contributions of female mathematicians working in representation theory and adjacent areas. \nThis conference will provide a platform for researchers from across the field to present their work\, foster new collaborations\, and strengthen connections within the community. The conference also seeks to promote visibility and support for women in mathematics. \nAttendance is open to everyone\, please register on the website. We welcome and encourage participation from all fields of mathematics\, all career stages. \nProgramme and more on https://icms.bg/celebrating-women-in-representation-theory/
URL:https://math.bas.bg/event/international-conference-celebrating-women-in-representation-theory/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Conference
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260513T140000
DTEND;TZID=Europe/Sofia:20260513T153000
DTSTAMP:20260606T112350
CREATED:20260507T085819Z
LAST-MODIFIED:20260507T085959Z
UID:19215-1778680800-1778686200@math.bas.bg
SUMMARY:National Seminar on Probability and Statistics
DESCRIPTION:The next meeting of the \nNational Seminar on Probability and Statistics\n \nwill be held on May 13\, 2026\, at 2:00 p.m. in Room 503 of the Institute of Mathematics and Informatics. \nA talk on: \nSome Properties of Exponential Functionals of Continuous Gaussian Processes\nwill be delivered by \nJosé Alfredo López-Mimbela (Center for Research in Mathematics Guanajuato\, Mexico). \nAbstract: Exponential functionals of random processes are mathematical expressions that typically involve integrating the exponential of a random process over time. These functionals play a significant role in various areas of mathematics and applied sciences\, including probability theory\, statistical mechanics\, and financial mathematics. In this talk\, we discuss some properties of exponential functionals associated with continuous Gaussian processes. The discussion centers on obtaining useful bounds for their cumulative distribution functions\, with particular emphasis on Brownian motion and fractional Brownian motion. \nMore information about the talk can be found on the seminar website:\nhttp://www.math.bas.bg/~statlab/NSPS/
URL:https://math.bas.bg/event/national-seminar-on-probability-and-statistics-44/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Institute%20of%20Mathematics%20and%20Informatics%2C%20BAS":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260512T140000
DTEND;TZID=Europe/Sofia:20260512T153000
DTSTAMP:20260606T112350
CREATED:20260507T084754Z
LAST-MODIFIED:20260507T084959Z
UID:19211-1778594400-1778599800@math.bas.bg
SUMMARY:National Seminar on Probability and Statistics
DESCRIPTION:The next meeting of the \nNational Seminar on Probability and Statistics\n \nwill be held on May 12\, 2026\, at 2:00 p.m. in Room 503 of the Institute of Mathematics and Informatics. \nA talk on: \nRandom Flights and Anomalous Diffusion: A non-Markovian Take on Lorentz Processes\nwill be delivered by \nLorenzo Facciaroni (Sapienza University of Rome). \nAbstract: A Lorentz process is a model for the motion of a particle among randomly located scatterers\, also known as obstacles. It was originally used to describe the transport of electrons through a conductor. In the classical setting\, when the scatterers are distributed according to a Poisson point process\, the deterministic dynamics of elastic collisions can be approximated\, under the Boltzmann-Grad scaling limit\, by a Markovian random flight. The density of this limiting process is governed by the Boltzmann equation. Passing further to the hydrodynamic limit\, one recovers Brownian motion as the macroscopic description of the particle’s position. In this work\, we introduce a new class of point processes that generalizes the Poisson process and we investigate the motion of a particle which collides elastically with obstacles distributed according to this distribution. Unlike the classical case\, the corresponding limiting random flight process is no longer Markovian. Instead\, it exhibits memory effects that lead to superdiffusive behavior. At the macroscopic level\, the particle’s position converges to a continuous superdiffusive process. Within this framework\, we derive a non-local analogue of the Boltzmann equation governing the non-Markovian random flight. Moreover\, we show that the density of the superdiffusive scaling limit satisfies a fractional heat equation\, reflecting the anomalous transport induced by the underlying correlations. \nKeywords: Lorentz process · Boltzmann-Grad limit · Feller semigroups. \nReferences:\n1. Facciaroni\, L.\, Ricciuti\, C.\, Scalas\, E.\, Toaldo\, B. (2026+) Random Flights and Anomalous Diffusion: A non Markovian Take on Lorentz Processes. To appear in Annals of Applied Probability.\n2. Gallavotti\, G. (1972) Rigorous Theory of the Boltzmann Equation in the Lorentz Gas. Nota interna n. 358\, Istituto di Fisica\, Università di Roma.\n3. Lorentz\, H.A. (1905) The motion of electrons in metallic bodies I. In: Proc. Acad. Amst.\, 7\, 438-453.\n4. Sphon\, H. (1978) The Lorentz process converges to a random flight. Commun. Math. Phys.\, 60\, 277-290. \nMore information about the talk can be found on the seminar website:\nhttp://www.math.bas.bg/~statlab/NSPS/
URL:https://math.bas.bg/event/national-seminar-on-probability-and-statistics-43/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Institute%20of%20Mathematics%20and%20Informatics%2C%20BAS":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260512T130000
DTEND;TZID=Europe/Sofia:20260512T143000
DTSTAMP:20260606T112350
CREATED:20260507T084122Z
LAST-MODIFIED:20260507T084233Z
UID:19206-1778590800-1778596200@math.bas.bg
SUMMARY:ICMS Seminar
DESCRIPTION:Time and place: Tuesday\, May 12-th\, 13:00\, room 403 IMI-BAS.\nLecturer: Ina Petkova (Darmouth College)\nTitle: Khovanov homology and Lagrangian cobordisms \nAbstract: We provide a partial answer to a question of Ekholm\, Honda\, and Kalman about the relationship between Khovanov homology and decomposable Lagrangian cobordisms. We also utilize previously defined filtered invariants to give a family of obstructions to decomposable Lagrangian cobordisms from Khovanov homology. Joint with Gage Martin and Zachary Winkeler. \n\n\nMore information can be found on the seminar’s web-page:\nhttps://icms.bg/khovanov-homology-and-lagrangian-cobordisms-icms-seminar-talk-by-ina-petkova/\nhttps://icms.bg/category/icms-seminar/
URL:https://math.bas.bg/event/icms-seminar-45/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260512T130000
DTEND;TZID=Europe/Sofia:20260512T143000
DTSTAMP:20260606T112350
CREATED:20260504T153220Z
LAST-MODIFIED:20260504T153514Z
UID:19198-1778590800-1778596200@math.bas.bg
SUMMARY:Mathematical Foundations of Informatics Seminar
DESCRIPTION:The next meeting of the seminar of the department of \nMathematical Foundations of Informatics \nwill be held on Tuesday\, May 12\, 2026\, at 1:00 pm\, in Room 503 of IMI-BAS. \nA talk on \nLinear codes and Steiner triple systems\nwill be delivered by prof. Vladimir Tonchev (Michigan Technological University). \nAbstract
URL:https://math.bas.bg/event/mathematical-foundations-of-informatics-seminar-17/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260512T130000
DTEND;TZID=Europe/Sofia:20260512T140000
DTSTAMP:20260606T112350
CREATED:20260417T084807Z
LAST-MODIFIED:20260417T085134Z
UID:19115-1778590800-1778594400@math.bas.bg
SUMMARY:Mathematical Foundations of Informatics Seminar
DESCRIPTION:The next meeting of the\nMathematical Foundations of Informatics seminar will be held on\nMay 12\, 2026\, at 1 p.m. in Room 503 of the\nInstitute of Mathematics and Informatics. \nA talk on: \nLinear codes and Steiner triple systems\nwill be delivered by\n\nVladimir D. Tonchev\nMichigan Technological University\, Houghton\, USA.\n\n\n\nThe abstract can be found here.
URL:https://math.bas.bg/event/mathematical-foundations-of-informatics-seminar-16/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260429T140000
DTEND;TZID=Europe/Sofia:20260429T153000
DTSTAMP:20260606T112350
CREATED:20260422T141543Z
LAST-MODIFIED:20260422T141651Z
UID:19145-1777471200-1777476600@math.bas.bg
SUMMARY:National Seminar on Probability and Statistics
DESCRIPTION:The next meeting of the \nNational Seminar on Probability and Statistics\n \nwill be held on April 29\, 2026\, at 2:00 p.m. in Room 503 of the Institute of Mathematics and Informatics. \nA talk on: \nProgressively Type-II censored competing risks data from Odd Lindley Half-Logistic distribution\nwill be delivered by \nStevo Gjorgiev (Ss. Cyril and Methodius University in Skopje). \nAbstract: A competing risks model based on the Odd Lindley Half Logistic distribution is considered under progressive Type II censoring. Maximum likelihood estimates for the distribution parameters are obtained\, and the existence and uniqueness of these estimates are proven. The EM algorithm is applied to solve the log- likelihood equations and construct the s-th EM sequence. Additionally\, using the missing information principle\, the observed and expected Fisher information matrices are derived\, and asymptotic confidence intervals for the parameters are computed based on them. \nMore information about the talk can be found on the seminar website:\nhttp://www.math.bas.bg/~statlab/NSPS/
URL:https://math.bas.bg/event/national-seminar-on-probability-and-statistics-42/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Institute%20of%20Mathematics%20and%20Informatics%2C%20BAS":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260428T140000
DTEND;TZID=Europe/Sofia:20260428T153000
DTSTAMP:20260606T112350
CREATED:20260424T121355Z
LAST-MODIFIED:20260424T121732Z
UID:19149-1777384800-1777390200@math.bas.bg
SUMMARY:Seminar of the SofTIS Department
DESCRIPTION:We kindly invite you to the seminar of the Software Technologies and Information Systems Dept. at IMI-BAS\, which will take place on April 28\, Tuesday\, at 2:00 p.m. in Hall 278 at IMI-Sofia and  online. Our guest lecturer Desislava Vasileva will present a research overview on Adaptive Educational Software and Game-Based Learning. She will talk on adaptive educational software and game-based learning\, covering three interconnected research lines. The first concerns adaptive hypermedia and e-learning systems\, including formal learner modeling and a platform for adaptive content delivery. The second focuses on game-based learning and player modeling — playing style classification from behavioral data\, physiological affect detection via galvanic skin response\, and a platform for automated generation of adaptive 3D educational games. The third extends this work to serious games for cultural heritage and STEM education\, with ongoing research on multi-modal player modeling combining eye-tracking\, galvanic skin response and behavioral signals for personalized secondary school games.
URL:https://math.bas.bg/event/seminar-of-the-softis-department-11/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260428T140000
DTEND;TZID=Europe/Sofia:20260428T153000
DTSTAMP:20260606T112350
CREATED:20260422T094603Z
LAST-MODIFIED:20260422T105227Z
UID:19139-1777384800-1777390200@math.bas.bg
SUMMARY:Seminar in Operations Research\, Probability and Statistics
DESCRIPTION:On April 28\, 2026 (Tuesday) at 2:00 pm in room 503 of IMI-BAS \nMihail Mukov (Intellics Engineering) \nwill give a talk at the Operations Research\, Probability and Statistics Seminar on: \nModeling Lifting Systems in Waste Collection\n. \nAbstract: \nThis presentation considers the problem of estimating the mass of waste emptied from individual containers by a garbage truck equipped with standard lifting forks for both large 1100-liter containers and smaller waste bins.\nThe main objective is to develop a low-cost measurement system that can be applied to a wide range of truck configurations with only minimal hardware modification.\nThe system combines an oil pressure sensor installed in the hydraulic circuit and a standard smartphone inertial measurement unit fixed on the lifting arm.\nThe pressure sensor provides a measure for determining the lifting force\, while the accelerometer and gyroscope are used to estimate the motion of the lifting arm. From these measurements and a calibrated model\, the dumped waste is determined.\nThe main focus of the presentation is the physical and mathematical structure of the method. This includes:\n\nVirtual reorientation of the sensor to the truck coordinate system.\nPreprocessing of raw sensor data.\nRemoving gyroscope drift.\nIntegration of angular velocity to obtain absolute rotation angle.\nPhysical model with unknown parameters\, formulated in a form suitable for regression-based calibration.\nGradient descent approach\, used for automatic identification of optimal measurement position.\nLinear approximation of the exponential dependence of oil viscosity on temperature\, allowing the system to remain usable at low winter temperatures.\n\nThe lecture is based on a joint research with Damyan Kalaglarsky (Intellics Eng.)  and Prof. Dsc. Ognyan Kounchev (IMI-BAS).\nEveryone interested in the topic is cordially invited to participate.
URL:https://math.bas.bg/event/seminar-in-operations-research-probability-and-statistics-4/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Department%20of%20Operations%20Research%2C%20Probability%20and%20Statistics":MAILTO:jeni@math.bas.bg;
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260424T140000
DTEND;TZID=Europe/Sofia:20260424T153000
DTSTAMP:20260606T112350
CREATED:20260420T132608Z
LAST-MODIFIED:20260420T132608Z
UID:19136-1777039200-1777044600@math.bas.bg
SUMMARY:Preliminary Defense of Ventsislav Polimenov\, SofTIS Department
DESCRIPTION:On April 24\, 2026 (Friday)\, at 2:00 pm\, in the Conference Room of IMI-BAS (Room 256) and via ZOOM\, a preliminary defense will be held of the dissertation on \nAdaptive neural network for processing satellite data with different spatial and spectral characteristics\nby Ventsislav Polimenov\, \ndoctoral student at the Software Technologies and Information Systems section\, with scientific supervisor Assoc. Prof. Krasimira Ivanova\, for obtaining the educational and qualification degree Doctor of Philosophy in the higher education area 4. Natural Sciences\, Mathematics and Informatics\, professional field 4.6 Informatics and Computer Science. \n* The dissertation materials are available in the IMI library. \n* Zoom link: https://us02web.zoom.us/j/88606059983?pwd=rsE8lZaDFuRmGpaaIuUIPRErEV6dJM.1
URL:https://math.bas.bg/event/preliminary-defense-of-ventsislav-polimenov-softis-department/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260424T130000
DTEND;TZID=Europe/Sofia:20260424T143000
DTSTAMP:20260606T112350
CREATED:20260417T152450Z
LAST-MODIFIED:20260417T152937Z
UID:19129-1777035600-1777041000@math.bas.bg
SUMMARY:Algebra and Logic Seminar
DESCRIPTION:The next meeting of the Algebra and Logic Seminar will take place on April 24\, 2026 (Friday) at 1:00 pm (UTC+3) in Room 578 and online via Zoom. \nA talk on: \nSets preserved by a large subgroup of the special linear group\nwill be delivered by \nKaloyan Slavov (Medical University\, Sofia).\nAbstract. The classical Kakeya problem in Euclidean space asks how “small” a set can be if it contains a unit line segment in every direction. More generally\, packing sets contain all images of a given set under a collection of transformations. Finite field analogues offer a combinatorial and algebraic perspective and motivate our work. \nWe study sets \(E\) in the affine plane over a finite field that are invariant under a large subgroup \(R\) of \(SL_2\). We prove that if \(|R|>c|E|^{3/2}\)\, then \(E\) must be contained in a line. The exponent \(3/2\) is sharp. We conclude with a remark on a related phenomenon in the Euclidean setting. This is joint work with Thang Pham and Le Quang-Hung. \nLink to the zoom meeting:\nhttps://us02web.zoom.us/j/88300991142?pwd=wGYl7VaD9RZKEm99sKzHMzl3bYCv3J.1\nEverybody is invited. \nAlgebra and Logic Department\, IMI – BAS\nhttp://www.math.bas.bg/algebra/seminarAiL/\n============================== =====================
URL:https://math.bas.bg/event/algebra-and-logic-seminar-121/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Department%20of%20Algebra%20and%20Logic":MAILTO:algebra_logic_seminar@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260421T140000
DTEND;TZID=Europe/Sofia:20260421T153000
DTSTAMP:20260606T112350
CREATED:20260313T181017Z
LAST-MODIFIED:20260414T192821Z
UID:18987-1776780000-1776785400@math.bas.bg
SUMMARY:National Seminar on Probability and Statistics
DESCRIPTION:The next meeting of the \nNational Seminar on Probability and Statistics\n \nwill be held on April 21\, 2026\, at 2:00 p.m. in Room 503 of the Institute of Mathematics and Informatics. \nA talk on: \nHow long does it take to train an Elephant Random Walk\nwill be delivered by \nZheng Fang (University of Zurich). \nAbstract: We study how conditioning on the first \(k\) steps\, which we think of as training\, affects the long-term behavior of the Elephant Random Walk. When the elephant is conditioned to be at position \(k\) at time \(k\)\, the first return time to the origin scales as \(k^{(4−4p)⁄(3−4p)}\) in the diffusive regime\, and grows exponentially in the critical regime. We loosely interpret this as a measurement of the rate at which the elephant forgets its training. \nMore information about the talk can be found on the seminar website:\nhttp://www.math.bas.bg/~statlab/NSPS/
URL:https://math.bas.bg/event/national-seminar-on-probability-and-statistics-41/?lang=en
LOCATION:Institute of Mathematics and Informatics\, BAS\, Akad.G.Bonchev St\, bl. 8\, 1113\, Sofia\, Bulgaria
CATEGORIES:Regular Seminar
ORGANIZER;CN="Institute%20of%20Mathematics%20and%20Informatics%2C%20BAS":MAILTO:office@math.bas.bg
END:VEVENT
END:VCALENDAR