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X-WR-CALDESC:Събития за Institute of Mathematics and Informatics
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DTSTART:20220327T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20220324T140000
DTEND;TZID=Europe/Sofia:20220324T153000
DTSTAMP:20260407T023857
CREATED:20220319T184701Z
LAST-MODIFIED:20220320T122816Z
UID:12057-1648130400-1648135800@math.bas.bg
SUMMARY:Семинар на секция "Математическо моделиране и числен анализ"
DESCRIPTION:На 24 март 2022 г. (четвъртък) от 14:00 часа ще се проведе семинар на секция “Математическо моделиране и числен анализ” в приложението Zoom. \nDr. habil. Clemens Hofreither ще представи доклад на тема \nA Newton’s method for best uniform rational approximation\nАбстракт. We present a novel algorithm\, inspired by the recent BRASIL algorithm\, for best uniform rational approximation based on a formulation of the problem as a nonlinear system of equations and barycentric interpolation. We derive a closed form for the Jacobian of the system of equations and formulate a Newton’s method for its solution. The resulting method for best uniform rational approximation can handle singularities and arbitrary degrees for numerator and denominator. It typically converges globally and exhibits superlinear convergence in a neighborhood of the solution.\nInteresting auxiliary results include formulae for the derivatives of barycentric rational interpolants with respect to the interpolation nodes\, and for the derivative of the nullspace of a full-rank matrix.\nThis talk is based on joint work with Irina Georgieva.\n\nTopic: семинар на секция “Математическо моделиране и числен анализ”\, Clemens Hofreither\nTime: Mar 24\, 2022 02:00 PM Sofia\n\nThe privacy policy\, terms of use\, and assistance can be found at\nhttps://help.jku.at/im/en/it-systeme/videokonferenz-mit-zoom\n\nJoin Zoom Meeting\nhttps://jku.zoom.us/j/94207785088?pwd=V05hV05Dd1lVZm9XM2dGZFA1bmRLZz09\nMeeting-ID: 942 0778 5088\nPassword: 729368\n  \n  \n 
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%be-%d0%bc%d0%be%d0%b4%d0%b5-12/
LOCATION:Zoom
CATEGORIES:Редовен семинар
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20220505T140000
DTEND;TZID=Europe/Sofia:20220505T153000
DTSTAMP:20260407T023857
CREATED:20220504T085630Z
LAST-MODIFIED:20220504T085630Z
UID:12270-1651759200-1651764600@math.bas.bg
SUMMARY:Семинар на секция "Математическо моделиране и числен анализ"
DESCRIPTION:Поредната сбирка на \nСЕМИНАРА на секция “Математическо моделиране и числен анализ” \nще се състои (присъствено) на 05.05.2022 г.\, четвъртък\, от 14:00 часа в зала 403 на Института по математика и информатика. Доклад на тема: \nOptimal Over-Parametirized Learning\nще изнесе Prof. Peter Binev\, University of South Carolina\, USA.  \nАбстракт
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%be-%d0%bc%d0%be%d0%b4%d0%b5-13/
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:20221212T093000
DTEND;TZID=Europe/Sofia:20221212T130000
DTSTAMP:20260407T023857
CREATED:20221206T213921Z
LAST-MODIFIED:20221206T213921Z
UID:13383-1670837400-1670850000@math.bas.bg
SUMMARY:Отчетна сесия на секция ММЧА
DESCRIPTION:Годишната отчетна  сесия на секция „Математическо моделиране и числен анализ“\nще се проведе на 12.12.2022 от 9:30 в зала 403 на ИМИ.\n\n\nПрограма\n\n\n\n9:30-9:50 Камен Иванов\, The problem for Downward Continuation. \n\n9:50-10:10 Илия Илиев\, Гранични цикли в осцилатор на Релей-Лиенар.\n\n10:10-10:30 Евгения Попова\, Regularity radius for matrices with rank-one interval parameters.\n\n10:30-10:45 Кафе-пауза\n\n10:45-11:05 Мая Минчева\, Delay stability of reaction networks.\n\n11:05-11:25 Петър Рашков\,  Задача за оптимално бързо действие в епидемичен модел на векторно-предавана болест с ограничения на управлението.\n\n11:25-11:45 Милен Борисов\, Светослав Марков\, The Exponential Decay and Outbreak Functions: Analysis and Numerical Simulation.\n\n11:45-12:00 Пауза\n\n12:00-12:20 Иван Бажлеков\, Generalized fractional bioreaction model and numerical approach.\n\n12:20-12:40 Михаил Кръстанов\, On the Euler equation.\n\n12:40-13:00 Станислав Харизанов\,  Efficient Quadratic Programming via square-root-matrix approximation.
URL:https://math.bas.bg/event/%d0%be%d1%82%d1%87%d0%b5%d1%82%d0%bd%d0%b0-%d1%81%d0%b5%d1%81%d0%b8%d1%8f-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%bc%d0%bc%d1%87%d0%b0-3/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Работен семинар
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