Organizers

prof. dr hab. Grzegorz Łukaszewicz

Information

Thursdays, 12:30 p.m. , room: 5070

Research fields

Mathematical Physics and Applied Analysis

List of talks

May 13, 2021, 12:30 p.m.
Szymon Charzyński (FUW)
Trapping and guiding bodies by gravitational waves endowed with angular momentum
It has been established theoretically and experimentally confirmed that electromagnetic waves endowed with angular momentum (for example, Bessel beams) can trap charged particles in the vicinity of the beam center. It can be shown that …
April 29, 2021, 12:30 p.m.
Jakub Skrzeczkowski (SDNŚiP)
Fast reaction limit with nonmonotone reaction function
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April 15, 2021, 12:30 p.m.
Bohdan Petraszczuk (doktorant SDNŚiP)
Regularity of n-harmonic maps
I will discuss regularity of maps from W^{n/2,2}(B^{n}(0,1), R^{n+1}) where B^{n} denotes the n-dimensional unit ball and n > 0 is even, which is a solution of H-system for a Lipschitz and bounded function H. …
April 8, 2021, 4 p.m.
Professor Martin Ostoja-Starzewski (Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign, US)
Spontaneous Violations of the Clausius-Duhem Inequality
Zoom link: https://us02web.zoom.us/j/81583752461?pwd=c2xXN0hoQVBVc2JLNmNYRHkxTzV4UT09 Meeting ID: 815 8375 2461 Passcode: 495149
March 25, 2021, 12:30 p.m.
Grzegorz Łukaszewicz (MIM UW)
Vertical heat transport at infinite Prandtl number for micropolar fluid.
Collaborators: M. Caggio (Univ. of L'Aquila), P. Kalita (UJ), K. Mizerski (IGF PAN) We investigate the upper bound on the vertical heat transport in the fully 3D Rayleigh-Benard convection problem at infinite Prandtl number for …
March 18, 2021, 12:30 p.m.
prof. Christopher Jones (Department of Applied Mathematics, University of Leeds, UK)
Giant planet interiors in the light of the Juno and Cassini missions
The Juno mission to the planet Jupiter has revealed significant new information about the processes going on inside the planet. Similar data for Saturn was obtained from the Cassini grand finale. Accurate measurements of Jupiter’s …
March 11, 2021, 12:30 p.m.
Piotr Skrzypacz (Nazarbayev University, Kazachstan)
O zaawansowanych metodach elementów skończonych dla zastosowań w inżynierii reaktorów chemicznych
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March 4, 2021, 12:30 p.m.
Lucjan Sapa (AGH w Krakowie, WMS)
Parabolic-elliptic and parabolic systems in diffusion models
The presentation deals with nonlinear parabolic--elliptic and parabolic systems with initial-boundary conditions modeling biological ion channels and interdiffusion in solids. I will formulate theorems on local and global existence, uniqueness and properties of weak solutions, …
Jan. 28, 2021, 12:30 p.m.
Maja Szlenk (doktorantka SDNŚiP)
Existence of weak solutions to compressible Stokes system with general pressure
In the presentation I will talk about the existence and uniqueness of weak solutions to the compressible Stokes system. Using the Lagrangian formulation, we are able to prove that the solution is globally bounded, provided …
Jan. 21, 2021, 12:30 p.m.
Tomasz Lewiński (Politechnika Warszawska, WIL)
projektowanie materiałów z wolnego wyboru
The presentation deals with minimization of the weighted average of compliances of structures, made of an elastic material of spatially varying elasticity moduli, subjected to n load variants acting non-simultaneously. The trace of the Hooke …
Jan. 14, 2021, 12:30 p.m.
Wojciech Dębski (IGF PAN)
Time Reversal - an efficient way of data analysis
Building knowledge on surrounding world requires information about it. This almost trivial statement gains a much deeper sense in cases when we cannot infer thought information by direct measurements. It happens quite often, actually too …
Jan. 7, 2021, 12:30 p.m.
Łukasz Chomienia (doktorant SDNŚiP)
Applications of PDEs in functional spaces with a measure or a weight
In my presentation I want to discuss two problems to which applying methods of PDEs in functional spaces that depend on a certain kind of measure seems to be fruitful. Describing a process of transfer …
Dec. 17, 2020, 12:30 p.m.
Krzysztof Mizerski (Instytut Geofizyki PAN)
Applications of mathematics in astrophysical hydrodynamics
The aim of the seminar is to present approaches and problems that arise in the analysis of dynamics of planetary and stellar fluid interiors. This involves the convective heat transfer in the presence of density …
Dec. 3, 2020, 12:30 p.m.
Piotr B. Mucha (MIM UW)
Pandemia COVID19 oczyma ignoranta
Chciałbym zrobić heurystyczne wprowadzenie do modelowania pandemii COVID19, która nas dotknęła w tym roku. Głównym elementem będą modele typu SEIR, opisujące uśrednioną populację. Wydawałoby się, że predykcje dynamiki takiej pandemii są bardzo ważne, ale ... …
Nov. 19, 2020, 12:30 p.m.
Piotr Kalita (UJ)
Układy dynamiczne jako narzędzie do modelowania procesów związanych ze świadomością
Teoria Zintegrowanej Informacji to zaproponowany przez Giulio Tononiego formalizm stosowany do opisu zjawisk związanych ze świadomością. Przedstawię założenia tej teorii oraz omówię oparte o nią modele wykorzystujące układy dynamiczne i ich atraktory. ------------------------------------------------------------------------------ Join …