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doc-src/Tutorial/Misc/NatSum.thy
author
ballarin
Fri, 29 Aug 2003 15:40:11 +0200
changeset 14175
dbd16ebaf907
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
Method rule_tac understands Isar contexts: documentation.
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end