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doc-src/Tutorial/Misc/natsum
author
wenzelm
Wed, 08 Sep 1999 23:49:39 +0200
changeset 7527
9e2dddd8b81f
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
lemma less_add;
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"