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doc-src/Tutorial/ToyList/lemma1
author
paulson
Thu, 17 Aug 2000 11:55:47 +0200
changeset 9633
a71a83253997
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
better rules for cancellation of common factors across comparisons
Goal "rev(xs @ ys) = (rev ys) @ (rev xs)";