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doc-src/Tutorial/Misc/natsum
author wenzelm
Tue, 15 Jan 2002 00:13:20 +0100
changeset 12761 b0c39f9837af
parent 5377 efb799c5ed3c
permissions -rw-r--r--
save: be slightly more about absent tags; get/add: missing case_names default to numbers 1, 2, 3, ...;

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