English

Subclasses of the separable permutations

Combinatorics 2014-02-26 v1

Abstract

We prove that all subclasses of the separable permutations not containing Av(231) or a symmetry of this class have rational generating functions. Our principal tools are partial well-order, atomicity, and the theory of strongly rational permutation classes introduced here for the first time.

Keywords

Cite

@article{arxiv.1007.1014,
  title  = {Subclasses of the separable permutations},
  author = {Michael H. Albert and M. D. Atkinson and Vincent Vatter},
  journal= {arXiv preprint arXiv:1007.1014},
  year   = {2014}
}
R2 v1 2026-06-21T15:45:13.753Z