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SUMMARY:Computing Kazhdan constants by computer. - Koji Fujiwara (Kyoto Un
 iversity)
DTSTART:20170309T110000Z
DTEND:20170309T120000Z
UID:TALK71437@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Ozawa found a new characterization of property (T)  of finitel
 y generated groups. His theorem gives an algorithm  to compute a lower bou
 nd of the Kazhdan constant. Netzer-Thom  actually found a good positive lo
 wer bound for SL(3\,Z).  I will report on computer experiments on other ex
 amples.  We found good lower bounds for lattice groups on A2-tilde buildin
 gs\,  which have property (T). This is an experimental math talk.  <br><br
 ><br><br>
LOCATION:Seminar Room 2\, Newton Institute
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