Low Surface Brighness galaxies: Vc-s0 relation and halo central density radial profile from stellar kinematics measurements
 Pizzella, A Corsini, E Dalla-Bonta', E Coccato, L Bertola, F Magorrian, J Sarzi, M 046 (09 Oct 2004)
Mon, 23 Jul 2018

14:00 - 16:00
L6

Shock Refection Problem: Existence and Uniqueness of Solutions

Mikhail Feldman
(University of Wisconsin)
Abstract

We discuss shock reflection problem for compressible gas dynamics, von Neumann conjectures on transition between regular and Mach reflections. Then we describe recent results on existence and uniqueness of regular reflection solutions for potential flow equation, and discuss some techniques involved in the proof. The approach is to reduce the shock reflection problem to a free boundary problem, and prove existence and uniqueness by a version of method of continuity. This involves apriori estimates of solutions in the elliptic region of the equation of mixed type, with ellipticity degenerating on some part of the boundary. For the proof of uniqueness, an important property of solutions is convexity of the free boundary. We will also discuss some open problems.

This talk is based on joint works with G.-Q. Chen and W. Xiang.

 

Tue, 13 Nov 2018

14:15 - 15:30
L4

Even Artin groups of FC-type are polyfree.

Conchita Martinez-Perez
(Universidad de Zaragoza)
Abstract

Polyfree groups are defined as groups having a series of normal
subgroups such that each sucessive quotient is free. This property
imples locally indicability and therefore also right orderability. Right
angled Artin groups are known to be polyfree (a result shown
independently by Duchamp-Krob, Howie and Hermiller-Sunic). Here we show
that Artin FC-groups for which all the defining relation are of even
type  are also polyfree. This is a joint work with Ruven Blasco and Luis
Paris.

Higher conservation laws and algebraic Bethe Ansätze for the supersymmetric t-J model
 Essler, F Korepin, V Physical Review B: Condensed Matter and Materials Physics
Exactly Solvable Models of Strongly Correlated Electrons Korepin, V Essler, F (29 Aug 1994)
On thermal fluctuations in quantum magnets
 Tennant, D Notbohm, S Lake, B James, A Essler, F Mikeska, H Fielden, J Kögerler, P Canfield, P Telling, M Physical review B: Condensed matter and materials physics http://arxiv.org/abs/0907.2067v1
Differential limit on the extremely-high-energy cosmic neutrino flux in the presence of astrophysical background from nine years of IceCube data
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Branching Brownian motion with decay of mass and the nonlocal Fisher-KPP equation
 Berestycki, J Penington, S Brunet, E Communications on Pure and Applied Mathematics volume 72 issue 12 2487-2577 (19 Apr 2019)
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