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doc-src/Tutorial/Misc/natsum
author
paulson
Mon, 19 Jul 1999 15:29:30 +0200
changeset 7034
99e012d61eef
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
new theorem zless_zero_nat
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"