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doc-src/Tutorial/Misc/NatSum.thy
author wenzelm
Wed, 03 Feb 1999 16:46:56 +0100
changeset 6191 381b27ca0543
parent 5377 efb799c5ed3c
permissions -rw-r--r--
renamed sig to PRIVATE_SIGN;

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