For more information about this meeting, contact Karl Schwede, 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
|Date:||02 / 20 / 2014|
|Time:||11:15am - 12:05pm|