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<p><font size="-1">Hi all,</font></p>
<p><font size="-1">This of course is another seminar of interest,
which you might want to subscribe to if didn't already. The
speaker this week is superb both as a researcher and as a
lecturer (and it sounds interesting!)</font></p>
<p><font size="-1">Best,</font></p>
<p><font size="-1">Avi</font><br>
</p>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
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<td>[Theory-Read] discrete math seminar</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Tue, 15 Oct 2019 09:41:39 -0400 (EDT)</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Paul Seymour <a class="moz-txt-link-rfc2396E" href="mailto:pds@math.princeton.edu"><pds@math.princeton.edu></a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:discretemath@math.princeton.edu">discretemath@math.princeton.edu</a>, <a class="moz-txt-link-abbreviated" href="mailto:dloring@ias.edu">dloring@ias.edu</a>,
<a class="moz-txt-link-abbreviated" href="mailto:seminar@math.princeton.edu">seminar@math.princeton.edu</a>,
<a class="moz-txt-link-abbreviated" href="mailto:theory-read@lists.cs.princeton.edu">theory-read@lists.cs.princeton.edu</a></td>
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<br>
<br>
<br>
<br>
***********************************<br>
* Princeton Discrete Math Seminar *<br>
***********************************<br>
<br>
Speaker: Yufei Zhao, MIT<br>
<br>
Thursday 17th October, 3:00 in Fine Hall 224.<br>
<br>
Title: Equiangular lines with a fixed angle<br>
<br>
<br>
Solving a longstanding problem on equiangular lines, we determine,
for each given fixed angle and in all sufficiently large
dimensions, the maximum number of lines pairwise separated by the
given angle.<br>
<br>
A key ingredient is a new result in spectral graph theory: the
adjacency<br>
matrix of a connected bounded degree graph has sublinear second
eigenvalue<br>
multiplicity.<br>
<br>
Joint work with: Zilin Jiang, Jonathan Tidor, Yuan Yao, and
Shengtong Zhang<br>
<br>
<br>
----------------------------------<br>
<br>
Next week: Alex Scott<br>
<br>
Anyone wishing to be added to or removed from this mailing list
should<br>
contact Paul Seymour (<a class="moz-txt-link-abbreviated" href="mailto:pds@math.princeton.edu">pds@math.princeton.edu</a>)<br>
<br>
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