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doc-src/Tutorial/Recdef/sep1
author berghofe
Fri, 16 Jul 1999 12:14:04 +0200
changeset 7015 85be09eb136c
parent 6100 40d66bc3e83f
permissions -rw-r--r--
- Datatype package now also supports arbitrarily branching datatypes (using function types). - Added new simplification procedure for proving distinctness of constructors. - dtK is now a reference.
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recdef sep "measure (%(a,xs). length xs)"
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  "sep(a, x#y#zs) = x # a # sep(a,y#zs)"
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  "sep(a, xs)     = xs"
isabelle