[CSDM] Fwd: [Theory-Read] discrete math seminar

[Avi Wigderson]

Hi all,

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!)

Best,

Avi



-------- Forwarded Message --------
Subject: 	[Theory-Read] discrete math seminar
Date: 	Tue, 15 Oct 2019 09:41:39 -0400 (EDT)
From: 	Paul Seymour <pds at math.princeton.edu>
To: 	discretemath at math.princeton.edu, dloring at ias.edu, 
seminar at math.princeton.edu, theory-read at lists.cs.princeton.edu





***********************************
* Princeton Discrete Math Seminar *
***********************************

Speaker: Yufei Zhao, MIT

Thursday 17th October, 3:00 in Fine Hall 224.

Title: Equiangular lines with a fixed angle


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.

A key ingredient is a new result in spectral graph theory: the adjacency
matrix of a connected bounded degree graph has sublinear second eigenvalue
multiplicity.

Joint work with: Zilin Jiang, Jonathan Tidor, Yuan Yao, and Shengtong Zhang


----------------------------------

Next week: Alex Scott

Anyone wishing to be added to or removed from this mailing list should
contact Paul Seymour (pds at math.princeton.edu)

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