Mercurial Mercurial > repos > isabelle / annotate
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/ack
author obua
Sun, 09 May 2004 23:04:36 +0200
changeset 14722 8e739a6eaf11
parent 9255 2ceb11a2e190
permissions -rw-r--r--
replaced apply-style proof for instance Multiset :: plus_ac0 by recommended Isar proof style
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
6100
40d66bc3e83f *** empty log message ***
nipkow
parents:
diff changeset 
     1
 
consts ack :: "nat*nat => nat"
9255
2ceb11a2e190 *** empty log message ***
nipkow
parents: 6100
diff changeset 
     2
 
recdef ack "measure(%m. m) <*lex*> measure(%n. n)"
6100
40d66bc3e83f *** empty log message ***
nipkow
parents:
diff changeset 
     3
 
  "ack(0,n)         = Suc n"
40d66bc3e83f *** empty log message ***
nipkow
parents:
diff changeset 
     4
 
  "ack(Suc m,0)     = ack(m, 1)"
40d66bc3e83f *** empty log message ***
nipkow
parents:
diff changeset 
     5
 
  "ack(Suc m,Suc n) = ack(m,ack(Suc m,n))"
isabelle