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ord.thy
author wenzelm
Wed, 21 Sep 1994 15:40:41 +0200
changeset 145 a9f7ff3a464c
parent 0 7949f97df77a
permissions -rw-r--r--
minor cleanup, added 'axclass', 'instance', 'syntax', 'defs' sections;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Ord = HOL +
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classes
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  ord < term
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consts
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  "<", "<="     :: "['a::ord, 'a] => bool"              (infixl 50)
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  mono		:: "['a::ord => 'b::ord] => bool"       (*monotonicity*)
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  min,max	:: "['a::ord,'a] => 'a"
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rules













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mono_def  "mono(f)  == (!A B. A <= B --> f(A) <= f(B))"













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min_def   "min(a,b) == if(a <= b, a, b)"













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max_def   "max(a,b) == if(a <= b, b, a)"













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end















Old_HOL