## Polynomial invariants of graphs and matroids

There are some simple and amazing polynomial invariants of graphs, such as the chromatic polynomial, which are special cases of the Tutte-Grothendieck polynomial invariants of matroids. References: Harary, F 1969 Graph Theory Addison-Wesley. Peter Cameron Polynomial aspects of codes, matroids and permutation groups Welsh, DJA 1976 Matroid Theory Academic Press, London. Bollobás, B 1998 Modern