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doc-src/Tutorial/Misc/Tree.thy
author paulson
Thu, 17 Aug 2000 11:56:47 +0200
changeset 9634 61b57cc1cb5a
parent 5377 efb799c5ed3c
permissions -rw-r--r--
modified proofs: better rules for cancellation of common factors across comparisons
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Tree = Main +
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datatype 'a tree = Tip | Node ('a tree) 'a ('a tree)
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end
isabelle