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ex/Finite.thy
author wenzelm
Fri, 04 Nov 1994 14:14:22 +0100
changeset 159 7a8fe3b95def
parent 0 7949f97df77a
permissions -rw-r--r--
abstract syntax operations for HOL;

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