src/HOLCF/Discrete0.ML
author paulson
Wed Apr 23 11:02:19 1997 +0200 (1997-04-23)
changeset 3018 e65b60b28341
parent 2841 c2508f4ab739
child 3323 194ae2e0c193
permissions -rw-r--r--
Ran expandshort
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(*  Title:      HOLCF/Discrete0.ML
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    ID:         $Id$
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    Author:     Tobias Nipkow
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    Copyright   1997 TUM
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Proves that 'a discr is a po
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*)
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goalw thy [less_discr_def] "less (x::('a::term)discr) x";
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by (rtac refl 1);
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qed "less_discr_refl";
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goalw thy [less_discr_def]
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  "!!x. [| less (x::('a::term)discr) y; less y z |] ==> less x z";
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by (etac trans 1);
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by (assume_tac 1);
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qed "less_discr_trans";
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goalw thy [less_discr_def]
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  "!!x. [| less (x::('a::term)discr) y; less y x |] ==> x=y";
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by (assume_tac 1);
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qed "less_discr_antisym";