PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Robert Vaughan, Mihran Papikian, Ae Ja Yee.

Title:Expanders and Ramanujan complexes
Seminar:Algebra and Number Theory Seminar
Speaker:Ori Parzanchevski, IAS
The "Ramanujan graphs" constructed by Lubotzky-Phillips-Sarnak and Margulis are sparse graphs with excellent expansion properties. Their higher dimensional analogues are "Ramanujan complexes", which are at the focus of several recent studies. In joint work with Konstantin Golubev we study the simplicial Hodge spectrum of these complexes, and derive some combinatorial expansion properties.

Room Reservation Information

Room Number:MB106
Date:02 / 20 / 2014
Time:11:15am - 12:05pm