login
Hints
(Greetings from The On-Line Encyclopedia of Bongard Problems!)
BP118 No cycle vs. a cycle exists.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP113 BP114 BP115 BP116 BP117  *  BP119 BP120 BP121 BP122 BP123

KEYWORD

traditional

CONCEPT arrow (info | search),
cyclic_path (info | search),
existence (info | search),
path (info | search)

AUTHOR

Douglas R. Hofstadter

Welcome | Solve | Browse | Lookup | Recent | Links | Register | Contact
Contribute | Keywords | Concepts | Worlds | Ambiguities | Transformations | Invalid Problems | Style Guide | Goals | Glossary