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<p class="MsoNormal" style="background:white"><span style="color:#313131">Join us for a special theory lunch this Friday as we host prospective PhD students.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#313131">Notice the
<b>unusual time and place. </b>Food will be served in CS 390 as part of the CS PhD Visit Day.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#313131"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#313131">----<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="color:#313131">Date:</span></b><span style="color:#313131"> March 4nd, Wednesday</span><span style="font-size:11.5pt;color:#201F1E"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="color:#313131">Time: </span></b><span style="color:#313131">12:00pm CT<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="color:#313131">Location: </span></b><span style="color:#313131">JCL 298<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#313131"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="color:#313131">Speaker: Erasmo Tani, UChicago</span></b><span style="color:#313131"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#313131"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="color:#313131">Title: </span></b><span style="font-family:"Segoe UI",sans-serif;color:#24292F;background:white">From (Sub)Gradient Flow Diffusions to Poincaré Inequalities in Graphs</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:11.5pt;color:#201F1E"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="color:#313131">Zoom: </span></b><span style="color:#313131">[<a href="https://uchicago.zoom.us/j/92801364965?pwd=L3V3VGNMSWw1SCs1UTk3NXhpb2lOZz09" title="https://urldefense.com/v3/__https://www.google.com/url?q=https*3A*2F*2Fuchicago.zoom.us*2Fj*2F97375149992*3Fpwd*3DYmNGa1FoaW1WOXVaQ1UxcVBWMjhVdz09&sa=D&ust=1646512430502000&usg=AOvVaw13FTypdW6t1Zcb49FcCVaI__;JSUlJSUlJQ!!BpyFHLRN4TMTrA!olXSZRmsAQcJ9V-Am2uk">link</a>]</span><span style="font-size:11.5pt;color:#201F1E"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:11.5pt;color:#201F1E"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:11.5pt;color:#313131">Abstract: </span></b><span style="font-size:11.5pt;color:#313131"> The heat diffusion on a graph is a linear system of ODEs that has found several applications to
graph partitioning. The process arises as the gradient flow of the Laplacian quadratic form potential with respect to the degree norm. In this talk we will introduce an alternative vertex-based diffusion process, and provide an analogue variational interpretation
for it. We will also discuss how this suggests a framework for casting some graph properties as optimal constants for Poincaré-type inequalities.</span><span style="font-size:11.5pt;color:#201F1E"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:11.5pt;color:#201F1E"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#201F1E">[<a href="https://urldefense.com/v3/__https:/orecchia.net/event/theory-lunch/__;!!BpyFHLRN4TMTrA!olXSZRmsAQcJ9V-Am2ukux9sTIOv2URHyw3af6Qjx16vaA61qQrERZ6jBznjSXXw62M$" target="_blank" title="https://urldefense.com/v3/__https://orecchia.net/event/theory-lunch/__;!!BpyFHLRN4TMTrA!olXSZRmsAQcJ9V-Am2ukux9sTIOv2URHyw3af6Qjx16vaA61qQrERZ6jBznjSXXw62M$"><span class="xmarkyk2ycimeh"><span style="color:blue">Theory</span></span> <span class="xmark5lphdspqc"><span style="color:blue">Lunch</span></span> Webpage</a>]<br>
[<a href="https://urldefense.com/v3/__https:/calendar.google.com/calendar/u/0/embed?src=c_osgf1c1qemdras8mu7l7pdhjrs@group.calendar.google.com&ctz=America*Chicago__;Lw!!BpyFHLRN4TMTrA!olXSZRmsAQcJ9V-Am2ukux9sTIOv2URHyw3af6Qjx16vaA61qQrERZ6jBznjXzVZCW4$" title="https://urldefense.com/v3/__https://calendar.google.com/calendar/u/0/embed?src=c_osgf1c1qemdras8mu7l7pdhjrs@group.calendar.google.com&ctz=America*Chicago__;Lw!!BpyFHLRN4TMTrA!olXSZRmsAQcJ9V-Am2ukux9sTIOv2URHyw3af6Qjx16vaA61qQrERZ6jBznjXzVZCW4$"><span class="xmarkyk2ycimeh"><span style="color:blue">Theory</span></span> <span class="xmark5lphdspqc"><span style="color:blue">Lunch</span></span> Calendar</a>]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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