doc-src/Tutorial/Misc/NatSum.thy
author wenzelm
Wed, 05 Apr 2000 21:02:31 +0200
changeset 8671 6ce91a80f616
parent 5377 efb799c5ed3c
permissions -rw-r--r--
HEADGOAL;

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