__Claremont Graduate University__ | __Claremont McKenna__ | __Harvey Mudd__ | __Pitzer__ | __Pomona__ | __Scripps__

Proudly Serving Math Community at the Claremont Colleges Since 2007

Copyright © 2011 Claremont Center for the Mathematical Sciences

11/01/2016 - 12:15pm

11/01/2016 - 1:10pm

Speaker:

Shahriar Shahriari (Pomona College)

Abstract:

Let k be a fixed small positive integer and let A be a matrix. Can you find a basis for the nullspace of A consisting of vectors whose entries are from the set {±1, ±2, . . . , ±(k − 1)}? We conjecture that the answer is yes, if A is the (0, 1)–incidence matrix of a finite graph and if k = 5. If true, this would strengthen a celebrated conjecture of Tutte from the 1950s. In this talk, we discuss the conjecture, and, present positive results for a variety of graphs including the complete graphs. Joint work with Saieed Akbari and Amir Hossein Ghodrati.

Where:

Millikan 2099, Pomona College