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doc-src/Tutorial/Misc/NatSum.thy
author
paulson
Wed, 28 Jul 1999 13:55:34 +0200
changeset 7123
4ab38de3fd20
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
congruence rule for |-, etc.
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end