<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Colleague,<br><br>This is a reminder on our next LaWiNe seminar on Sofic groups.<div><span class="Apple-style-span" style="line-height: 17px; "><div><span class="Apple-style-span" style="line-height: 17px; "><br></span></div></span><span class="Apple-style-span" style="line-height: 17px; ">LaWiNe - Lausanne / Wien / Neuchâtel mathematical seminar on Sofic groups (and related subjects)</span></div><div><span class="Apple-style-span" style="line-height: 17px;">Funded by the Swiss NSF Sinergia grant CRSI22-130435, the seminar meets once per month, alternatively on the 3 sites.</span><br><span class="Apple-style-span" style="line-height: 17px;">Website: </span><a href="http://egg.epfl.ch/lawine/" target="_blank" style="line-height: 17px; ">http://egg.epfl.ch/lawine/</a><br><br><span class="Apple-style-span" style="line-height: 17px;">Everybody is welcome! </span></div><div><span class="Apple-style-span" style="line-height: 17px;"><br></span></div><div><span class="Apple-style-span" style="line-height: 17px;">-- Please inform me if you would like to join us for the lunch at 12:00.</span><div><span class="Apple-style-span" style="line-height: 17px; ">-- </span>If you need a hotel reservation please contact directly Martina Obermaier <<a href="mailto:Martina.Obermaier@univie.ac.at">Martina.Obermaier@univie.ac.at</a>></div><div><span class="Apple-style-span" style="line-height: 17px; "><br></span></div><div><span class="Apple-style-span" style="line-height: 17px; ">********************************************************************************************************<br><b>Wednesday 25 January</b> 2012, 14:00–14:45 and 15:15–16:00</span><div><span class="Apple-style-span" style="line-height: 17px; ">University of Vienna, <b>Hörsaal 8</b> (UZA 2)</span></div><div><span class="Apple-style-span" style="line-height: 17px; "><br><br></span></div><div><span class="Apple-style-span" style="line-height: 17px; ">14:00 Swiatoslaw GAL (Wien), </span></div><div><span class="Apple-style-span" style="line-height: 17px; "><span class="Apple-style-span" style="line-height: normal; "><br></span></span></div><div><span class="Apple-style-span" style="line-height: 17px; "><span class="Apple-style-span" style="line-height: normal; ">Title: Surjunctive groups</span></span></div><div><br></div><div>Abstract: We will discuss group theoretic properties that preserve surjunctivity. In particular, we will discuss semidirect products.<br><br><span class="Apple-style-span" style="line-height: 17px;">15:15: </span>Viktor Harangi<span class="Apple-style-span" style="line-height: 17px;"> (Budapest)</span><br><br>Title: Benjamini-Shramm convergence, soficity and moments.<br><br>Abstract: A finitely generated group is sofic if its Cayley diagram (the Cayley graph edge-labeled with the generators) can be<br>approximated by finite diagrams. Here, approximation is meant in the so-called Benjamini-Schramm metric. We get a weaker notion of soficity<br>if we forget the edge-labels (that is, we want to approximate the Cayley graph of our group by finite graphs). In this talk I present an even weaker form of approximation, related to the moments of the spectral measure of the graphs. I will explain how this might help us deciding whether every group is sofic.<br>*******************************************************************************************************</div><div><br></div><div>Best wishes,<br><div><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div>Goulnara ARZHANTSEVA</div><div style="line-height: normal; "><br></div><div style="line-height: normal; ">____________________________</div><div style="line-height: normal; ">Professor, University of Vienna</div><div style="line-height: normal; ">Faculty of Mathematics</div><div style="line-height: normal; "><a href="http://www.mat.univie.ac.at/~arjantseva/">http://www.mat.univie.ac.at/~arjantseva/</a></div><div style="line-height: normal; ">____________________________</div></span>
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