Combinatorial polynomials, such as the Tutte, U‐ and Schubert polynomials, complement this by systematically organising information about graphs and posets into polynomial expressions.

SIAM Journal on Numerical Analysis, Vol. 31, No. 5 (Oct., 1994), pp. 1497-1518 (22 pages) ...

The simplest and most natural examples of completely nonunitary contractions on separable complex Hilbert spaces which have polynomial characteristic functions are the nilpotent operators. The main ...