The University of Michigan Combinatorics Seminar
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Abstract |
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In 1995, Stanley defined a symmetric function generalization of the
chromatic polynomial. Gebhard and Sagan then introduced an analogous
function in noncommuting variables which has the advantage of
satisfying a deletion-contraction law. These functions are also of
interest in their own right. We will survey some of their
applications to graph coloring as well as properties of a version of
the Schur function in this context.
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