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doc-src/Tutorial/Misc/NatSum.thy
author
wenzelm
Fri, 05 Feb 1999 21:11:41 +0100
changeset 6249
8bb90076cc7c
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
Session.use_dir: check parent;
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end