author | kleing |
Mon, 21 Jun 2004 10:25:57 +0200 | |
changeset 14981 | e73f8140af78 |
parent 12030 | 46d57d0290a2 |
permissions | -rw-r--r-- |
2640 | 1 |
(* Title: HOLCF/Cprod1.ML |
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ID: $Id$ |
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Author: Franz Regensburger |
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Partial ordering for cartesian product of HOL theory Product_Type.thy |
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*) |
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(* ------------------------------------------------------------------------ *) |
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(* less_cprod is a partial order on 'a * 'b *) |
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(* ------------------------------------------------------------------------ *) |
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massive tidy-up: goal -> Goal, remove use of prems, etc.
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Goalw [less_cprod_def] "(p::'a*'b) << p"; |
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by (Simp_tac 1); |
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qed "refl_less_cprod"; |
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Goalw [less_cprod_def] "[|(p1::'a * 'b) << p2;p2 << p1|] ==> p1=p2"; |
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by (rtac injective_fst_snd 1); |
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by (fast_tac (HOL_cs addIs [antisym_less]) 1); |
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by (fast_tac (HOL_cs addIs [antisym_less]) 1); |
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qed "antisym_less_cprod"; |
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Goalw [less_cprod_def] |
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"[|(p1::'a*'b) << p2;p2 << p3|] ==> p1 << p3"; |
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by (rtac conjI 1); |
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by (fast_tac (HOL_cs addIs [trans_less]) 1); |
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by (fast_tac (HOL_cs addIs [trans_less]) 1); |
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qed "trans_less_cprod"; |