Mercurial Mercurial > repos > isabelle / file revision
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc-src/Tutorial/Recdef/fib
author paulson
Tue, 16 May 2000 14:04:29 +0200
changeset 8876 f797816932d7
parent 6100 40d66bc3e83f
permissions -rw-r--r--
reverted to old proof of dominoes_tile_row, given new treatment of #2+...

consts fib :: nat => nat
recdef fib "measure(%n. n)"
  "fib 0 = 0"
  "fib 1 = 1"
  "fib (Suc(Suc x)) = fib x + fib (Suc x)"
isabelle