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doc-src/Tutorial/Misc/NatSum.thy
author
wenzelm
Sun, 03 Oct 1999 15:51:38 +0200
changeset 7682
46de8064c93c
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
added Space, Comment token kinds (keep actual text); source: do not filter proper;
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end