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doc-src/Tutorial/ToyList/lemma1
author
oheimb
Mon, 06 Sep 1999 18:19:01 +0200
changeset 7496
93ae11d887ff
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
added theorems subset_insertD, singleton_insert_inj_eq, subset_singletonD
Goal "rev(xs @ ys) = (rev ys) @ (rev xs)";