English

Note on the size of a stable matching

Theoretical Economics 2025-06-02 v1

Abstract

Consider a one-to-one two-sided matching market with workers on one side and single-position firms on the other, and suppose that the largest individually rational matching contains nn pairs. We show that the number of workers employed and positions filled in every stable matching is bounded from below by n2\lceil\frac{n}{2}\rceil and we characterise the class of preferences that attain the bound.

Keywords

Cite

@article{arxiv.2505.24637,
  title  = {Note on the size of a stable matching},
  author = {Gregory Z. Gutin and Philip R. Neary and Anders Yeo},
  journal= {arXiv preprint arXiv:2505.24637},
  year   = {2025}
}