Title:	 B-symmetric chromatic function of signed graphs.

Abstract: 
First I review Stanley’s symmetric chromatic function of graphs 
and its appearance in Vassiliev knot invariants. In the second part of the 
talk I explain the generalization of this theory to signed graphs. These 
functions naturally possess the symmetry of B-type. Thus, the case of signed 
graphs can be considered as the B-type analog of the Stanley A-type symmetrical 
functions of usual graphs. This is a joint work with my students James Enouen, 
Eric Fawcett, Rushil Raghavan, and Ishaan Shah.