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doc-src/Tutorial/Misc/NatSum.thy
author wenzelm
Thu, 02 Sep 1999 15:25:19 +0200
changeset 7443 e5356e73f57a
parent 5377 efb799c5ed3c
permissions -rw-r--r--
renamed NatSum to Summation;

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