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DTSTART;TZID=Europe/Sofia:20220324T140000
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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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