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ex/Finite.thy
author nipkow
Wed, 08 Feb 1995 11:34:11 +0100
changeset 210 1a3d3b5b5d15
parent 0 7949f97df77a
permissions -rw-r--r--
More rewrite rules.

Finite = Lfp +
consts Fin :: "'a set => 'a set set"
rules
 Fin_def "Fin(A) == lfp(%F. insert({}, UN x:A. insert(x)``F))"
end
Old_HOL