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doc-src/Tutorial/Datatype/absubsta
author wenzelm
Wed, 02 Jan 2002 21:52:15 +0100
changeset 12616 07f1399c1fee
parent 5851 15ce4c1c8313
permissions -rw-r--r--
added isabelle-intro, isabelle-logics;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
5851
15ce4c1c8313 New section on advanced datatypes.
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primrec
15ce4c1c8313 New section on advanced datatypes.
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  "substa s (IF b a1 a2) =
15ce4c1c8313 New section on advanced datatypes.
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     IF (substb s b) (substa s a1) (substa s a2)"
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  "substa s (Sum a1 a2) = Sum (substa s a1) (substa s a2)"
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  "substa s (Diff a1 a2) = Diff (substa s a1) (substa s a2)"
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  "substa s (Var v) = s v"
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  "substa s (Num n) = Num n"
isabelle