Discussiones Mathematicae Graph Theory 33(1) (2013) 49-55
doi: 10.7151/dmgt.1667

Dedicated to Mietek Borowiecki on the occasion of his 70th birthday and to his wife Wanda who together with Mietek create a necassary pair in each stable marriage matching.

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A note on the uniqueness of stable
marriage matching

Ewa Drgas-Burchardt

Faculty of Mathematics, Computer Science and Econometrics
University of Zielona Góra
ul. prof. Z.Szafrana 4a, 65-516 Zielona Góra, Poland


In this note we present some sufficient conditions for the uniqueness of a stable matching in the Gale-Shapley marriage classical model of even size. We also state the result on the existence of exactly two stable matchings in the marriage problem of odd size with the same conditions.

Keywords: stable matching, Gale-Shapley model, stable perfect matching

2010 Mathematics Subject Classification: 05C70, 05C90.


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Received 30 March 2012
Revised 11 November 2012
Accepted 11 November 2012