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doc-src/Tutorial/Misc/NatSum.thy
author kleing
Wed, 14 May 2003 15:22:37 +0200
changeset 14029 fe031a7c75bc
parent 5377 efb799c5ed3c
permissions -rw-r--r--
use proof objects for HOL by default

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