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doc-src/Tutorial/Misc/natsum
author wenzelm
Tue, 23 Oct 2001 23:28:01 +0200
changeset 11916 82139d3dcdd7
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added RANGE (from Isar/proof.ML);

consts sum :: nat => nat
primrec
"sum 0 = 0"
"sum (Suc n) = Suc n + sum n"
isabelle