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doc-src/Tutorial/Misc/NatSum.thy
author
wenzelm
Tue, 12 Jan 1999 13:40:08 +0100
changeset 6091
e3cdbd929a24
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
eliminated tthm type and Attribute structure;
NatSum = Main +
consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
end