Поредната сбирка на Националния семинар по стохастика ще се проведе на 20 май 2026 г. (вторник) от 14:00 часа в зала 503 на ИМИ - БАН. Доклад на тема Finite time blowup and existence of global solutions of a semi-linear stochastic partial differential equation with fractional noise ще изнесе Ekaterina Todorova Kolkovska (Center for Research in Mathematics Guanajuato, Mexico). Abstract: 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 [...]

Поредната сбирка на Националния семинар по стохастика ще се проведе на 9 юни 2026 г. (вторник) от 14:00 часа в зала 503 на ИМИ - БАН. Доклад на тема Modified percolation models on lattice graphs ще изнесе Viktor Stoyanov (University of Warwick). Abstract: 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, [...]