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doc-src/Tutorial/Misc/natsum
author
wenzelm
Tue, 04 Apr 2000 18:08:08 +0200
changeset 8666
6c21e6f91804
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
case_tac / induct_tac: optional rule;
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"