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X-WR-CALNAME:Institute of Mathematics and Informatics
X-ORIGINAL-URL:https://math.bas.bg
X-WR-CALDESC:Събития за Institute of Mathematics and Informatics
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DTSTART:20260329T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260520T140000
DTEND;TZID=Europe/Sofia:20260520T153000
DTSTAMP:20260630T004636
CREATED:20260517T124507Z
LAST-MODIFIED:20260517T124507Z
UID:19289-1779285600-1779291000@math.bas.bg
SUMMARY:Национален семинар по стохастика
DESCRIPTION:Поредната сбирка на \nНационалния семинар по стохастика\nще се проведе на 20 май 2026 г. (вторник) от 14:00 часа в зала 503 на ИМИ – БАН. \nДоклад на тема \nFinite time blowup and existence of global solutions of a semi-linear stochastic partial differential equation with fractional noise\nще изнесе \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. \nПовече информация за доклада можете да намерите на страницата на семинара:\nhttp://www.math.bas.bg/~statlab/NSPS/ \n 
URL:https://math.bas.bg/event/%d0%bd%d0%b0%d1%86%d0%b8%d0%be%d0%bd%d0%b0%d0%bb%d0%b5%d0%bd-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bf%d0%be-%d1%81%d1%82%d0%be%d1%85%d0%b0%d1%81%d1%82%d0%b8%d0%ba%d0%b0-49/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%98%D0%BD%D1%81%D1%82%D0%B8%D1%82%D1%83%D1%82%20%D0%BF%D0%BE%20%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20%D0%B8%20%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20-%20%D0%91%D0%90%D0%9D":MAILTO:office@math.bas.bg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20260609T140000
DTEND;TZID=Europe/Sofia:20260609T153000
DTSTAMP:20260630T004636
CREATED:20260602T233404Z
LAST-MODIFIED:20260602T234536Z
UID:19443-1781013600-1781019000@math.bas.bg
SUMMARY:Национален семинар по стохастика
DESCRIPTION:Поредната сбирка на \nНационалния семинар по стохастика\nще се проведе на 9 юни 2026 г. (вторник) от 14:00 часа в зала 503 на ИМИ – БАН. \nДоклад на тема \nModified percolation models on lattice graphs\nще изнесе \nViktor Stoyanov (University of Warwick). \nAbstract: We consider modified percolation models on the first quadrant of \(Z^2\)\, where many of the key tools from standard percolation on \(Z^2\) fail\, such as translational invariance. I will begin by defining the standard percolation model on \(Z^d\)\, giving an overview of what is known\, and then give some results which we prove for the first quadrant of \(Z^2\). In the second part of the talk\, I will discuss an anisotropic percolation model on the first quadrant\, with one of the two directions being ‘preferable’\, and show a partial result concerning the strict monotonicity of the connectivity function\, conjectured by de Lima and Procacci (2004). This is based on work completed as part of my Masters’ dissertation project\, supervised by Daniel Valesin (University of Warwick). \nПовече информация за доклада можете да намерите на страницата на семинара:\nhttp://www.math.bas.bg/~statlab/NSPS/ \n 
URL:https://math.bas.bg/event/%d0%bd%d0%b0%d1%86%d0%b8%d0%be%d0%bd%d0%b0%d0%bb%d0%b5%d0%bd-%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bf%d0%be-%d1%81%d1%82%d0%be%d1%85%d0%b0%d1%81%d1%82%d0%b8%d0%ba%d0%b0-50/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
ORGANIZER;CN="%D0%98%D0%BD%D1%81%D1%82%D0%B8%D1%82%D1%83%D1%82%20%D0%BF%D0%BE%20%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20%D0%B8%20%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0%20-%20%D0%91%D0%90%D0%9D":MAILTO:office@math.bas.bg
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