Permutation Patterns, I

Herbert Wilf
University of Pennsylvania, Philadelphia, PA 19104-6395, USA
wilf@math.upenn.edu

Abstract

Permutation patterns are a "hot" subject these days. We describe the main problems of the field, and discuss some specific results. Here we will focus on patterns in permutations of multisets.

Note

The related materials can be found in the Prof. H. Wilf's Homepage.