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doc-src/Tutorial/Recdef/ack
author paulson
Mon, 05 Mar 2001 15:25:11 +0100
changeset 11193 851c90b23a9e
parent 9255 2ceb11a2e190
permissions -rw-r--r--
reorganization of HOL/UNITY, moving examples to subdirectories Simple and Comp

consts ack :: "nat*nat => nat"
recdef ack "measure(%m. m) <*lex*> measure(%n. n)"
  "ack(0,n)         = Suc n"
  "ack(Suc m,0)     = ack(m, 1)"
  "ack(Suc m,Suc n) = ack(m,ack(Suc m,n))"
isabelle