TWiki> Mizar Web>FraenkelNonEmpty (2002-07-07, WikiRoot)EditAttach
Despite the permissive defintion of the type Element http://mizar.uwb.edu.pl/JFM/Vol1/subset_1.abs.html#M1 the Frankel term still requires its arguments to widen into Element of non empty set.

-- WikiRoot - 07 Jul 2002

WebForm
TopicClassification MizarPitfall
ProjectGroup?

ImplementationDate? N/A
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Topic revision: r1 - 2002-07-07 - 15:52:00 - WikiRoot
 
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