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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20220610T130000
DTEND;TZID=Europe/Sofia:20220610T140000
DTSTAMP:20220601T085407Z
CREATED:20220601T085338Z
LAST-MODIFIED:20220601T085407Z
UID:12442-1654866000-1654869600@math.bas.bg
SUMMARY:Семинар на секция “Математически основи на информатиката”
DESCRIPTION:На 10 юни 2022 г. (петък) от 13:00 часа в заседателната зала на ИМИ\nще се проведе заседание на семинара на секция МОИ.\n\nДоклад за зачисляване в докторантура на тема:\nSperner‘s Theorem\, Voting Theory\, Balancing the Graph System\, Strong and Weak Subsets of the Multiset\nще изнесе Степан Тарасенко\, Киевски политехнически институт.\n\n\nЗа онлайн участие (Zoom): \nhttps://us02web.zoom.us/j/84701255174?pwd=bnVQV290cExnS2p3RVpRZDdWdFlBUT09\n\nMeeting ID: 847 0125 5174\, Passcode: 896181
URL:https://math.bas.bg/event/%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%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-2/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар,Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20220610T140000
DTEND;TZID=Europe/Sofia:20220610T153000
DTSTAMP:20220601T090344Z
CREATED:20220601T090344Z
LAST-MODIFIED:20220601T090344Z
UID:12451-1654869600-1654875000@math.bas.bg
SUMMARY:Семинар на секция “Математически основи на информатиката”
DESCRIPTION:На 10 юни 2022 г. (петък) от 14:00 часа в заседателната зала на ИМИ\nще се проведе предзащита на дисертация \nза присъждане на образователна и научна степен “доктор”\nв професионално направление: 4.5. Математика\,\nнаучна специалност: 01.01.02. Алгебра и теория на числата.\n\n\nна\nПаскал Николаев Пиперков\nдокторант в секция МОИ на ИМИ-БАН \n\nТема на дисертацията: \nДискретни трансформации и приложението им в теория на кодирането  и комбинаториката\n\nНаучен ръководител: проф. дмн Илия Буюклиев \nЗа онлайн участие (Zoom): \nhttps://us02web.zoom.us/j/84701255174?pwd=bnVQV290cExnS2p3RVpRZDdWdFlBUT09 \nMeeting ID: 847 0125 5174\, Passcode: 896181
URL:https://math.bas.bg/event/%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%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-3/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Защита,Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20220610T160000
DTEND;TZID=Europe/Sofia:20220610T173000
DTSTAMP:20220603T175441Z
CREATED:20220603T175441Z
LAST-MODIFIED:20220603T175441Z
UID:12466-1654876800-1654882200@math.bas.bg
SUMMARY:Семинар "Алгебра и логика"
DESCRIPTION:На 10 юни 2022 г. (петък) от 16:00 ч. ще се проведе дистанционно заседание на семинара по „Алгебра и логика”. \nДоклад на тема: \nComputing Eigenvectors of Symmetric Tridiagonals with the Correct Number of Sign Changes\n\nще изнесе Plamen Koev (San José State University\, USA). \n\nАбстракт. The symmetric tridiagonal eigenvector problem has been a central research topic in numerical linear algebra since its inception. Of the myriad of algorithms today\, none is provably optimal and accurate at the same time. “Optimal” means\, a subset of k eigenvectors is computed in O(kn) time. “Accurate” means that the computes eigenvectors are orthogonal and satisfy the typical relative gap error bound. \nIn this talk\, we focus our attention on a neglected oscillating property of the eigenvectors: the i-th eigenvector has exactly i – 1 changes of sign in its entries. Long considered irrelevant\, because the tiny entries of the eigenvectors don’t seem to be of any practical importance\, this property may hold the key to accurate eigenvectors computed in optimal time! \nSuch an approach is not without precedent: the preservation of the mathematical properties of the computed objects has lead to major progress in various computations. \nWe present a new algorithm that computes individual eigenvectors in optimal\, O(n) time\, each guaranteed to have the correct number of sign changes\, and satisfying the conventional relative gap error bound. The numerical experiments in this work in progress look promising in that the computed eigenvectors seem to also be orthogonal. \n\n  \nСеминарът ще се проведе посредством платформата Zoom и всеки желаещ може да се присъедини като последва линка: \nhttps://us02web.zoom.us/j/85137375021?pwd=RE5QczdFTE1xL1R6MnI2b1lkcGczQT09 \nTopic: Онлайн семинар на секция “Алгебра и логика”\nTime: Jun 10\, 2022 04:00 PM Sofia\nMeeting ID: 851 3737 5021\nPasscode: 035647 \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%b0-80/
LOCATION:Zoom
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%A1%D0%B5%D0%BA%D1%86%D0%B8%D1%8F %D0%90%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":MAILTO:algebra_logic_seminar@math.bas.bg
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