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doc-src/Tutorial/Misc/NatSum.thy
author
nipkow
Wed, 11 Feb 2004 01:26:15 +0100
changeset 14381
1189a8212a12
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
Modified UN and INT xsymbol syntax: made index subscript
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end