An ordinal selection of stable sets in the sense of Hillas
نویسندگان
چکیده
In this paper, it is shown in an example that the original definition of stable sets in Hillas [Econometrica 58 (1990) 1365–1391] does not satisfy (an even slightly weakenened version of) the invariance condition proposed in Mertens [Ordinality in noncooperative games, Core Discussion Paper 8728, CORE Louvain de la Neuve, Belgium, 1987]. However, it is also shown that the basic stability condition of Hillas underlying his definition of stable sets does admit a selection that is invariant in the strong sense, and even ordinal. © 2001 Elsevier Science B.V. All rights reserved.
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