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doc-src/Tutorial/Recdef/fib
author paulson
Wed, 14 Feb 2001 12:16:32 +0100
changeset 11115 285b31e9e026
parent 6100 40d66bc3e83f
permissions -rw-r--r--
a new theorem from Bryan Ford
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consts fib :: nat => nat
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recdef fib "measure(%n. n)"
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  "fib 0 = 0"
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  "fib 1 = 1"
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  "fib (Suc(Suc x)) = fib x + fib (Suc x)"
isabelle