doc-src/Tutorial/Misc/NatSum.thy
author paulson
Wed, 18 Feb 2004 16:01:37 +0100
changeset 14393 71dff3bade66
parent 5377 efb799c5ed3c
permissions -rw-r--r--
new Union syntax

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