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X-WR-CALDESC:Events for Institute of Mathematics and Informatics
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TZID:Europe/Sofia
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DTSTART:20260329T010000
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DTSTART:20261025T010000
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DTSTART;TZID=Europe/Sofia:20260424T130000
DTEND;TZID=Europe/Sofia:20260424T143000
DTSTAMP:20260425T193822
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
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260424T140000
DTEND;TZID=Europe/Sofia:20260424T153000
DTSTAMP:20260425T193822
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
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