doc-src/Tutorial/Misc/NatSum.thy
author wenzelm
Wed, 09 Jun 2004 18:51:16 +0200
changeset 14895 b9cc12a91fd3
parent 5377 efb799c5ed3c
permissions -rw-r--r--
updated/tuned identifier syntax;

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