Scandinavian Working Papers in Economics
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Department of Economics, Lund University Working Papers, Department of Economics, Lund University

No 2013:8:
A Review of the Existence of Stable Roommate Matchings

Jens Gudmundsson ()

Abstract: We compare different preference restrictions that ensure the existence of a stable roommate matching. Some of these restrictions are generalized to allow for indifferences as well as incomplete preference lists, in the sense that an agent may prefer remaining single to matching with some agents. We also introduce a new type of cycles and in greater detail investigate the domain of preferences that have no such cycles. In particular, we show how the absence of these cycles relates to the "symmetric utilities hypothesis" by Rodrigues-Neto (Journal of Economic Theory 135, 2007) when applied to roommate problems with weak preferences.

Keywords: Roommate problem; existence; stable matching; cycles; (follow links to similar papers)

JEL-Codes: C62; C78; (follow links to similar papers)

11 pages, April 5, 2013

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