Wilf classification of three and four letter signed patterns
Combinatorics
2007-05-23 v1
Abstract
We give some new Wilf equivalences for signed patterns which allow the complete classification of signed patterns of lengths three and four. The problem is considered for pattern avoidance by general as well as involutive signed permutations.
Keywords
Cite
@article{arxiv.math/0604025,
title = {Wilf classification of three and four letter signed patterns},
author = {W. M. B. Dukes and T. Mansour and A. Reifegerste},
journal= {arXiv preprint arXiv:math/0604025},
year = {2007}
}
Comments
10 page; 2 figures