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doc-src/Tutorial/Misc/NatSum.thy
author wenzelm
Fri, 28 Sep 2001 19:21:26 +0200
changeset 11629 481148b273b5
parent 5377 efb799c5ed3c
permissions -rw-r--r--
permissive option;

NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end
isabelle