Semirigid systems of three equivalence relations

Autor: Delhomm��, Christian, Miyakawa, Masahiro, Pouzet, Maurice, Rosenberg, Ivo G., Tatsumi, Hisayuki

Publikováno v: Journal of Multiple-Valued Logic and Soft Computing
Journal of Multiple-Valued Logic and Soft Computing, Old City Publishing, 2017, 28 (4-5), pp.511-535

A system $\mathcal M$ of equivalence relations on a set $E$ is \emph{semirigid} if only the identity and constant functions preserve all members of $\mathcal M$. We construct semirigid systems of three equivalence relations. Our construction leads to

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https://hal.univ-reunion.fr/hal-01816479