Quasihalt

From BusyBeaverWiki
Jump to navigation Jump to search

A program is called quasihalting if it has any states which are reached no more than a fixed number of times during the course of a computation.[1]

A machine is said to quasihalt when it enters a cycle of behavior in which it does not visit all machine states.[2][3][4]

Relationship with Beeping Busy Beavers

By introducing the concept of quasihalting, it becomes succinct and straightforward to define the Beeping Busy Beaver problem: "the Beeping Busy Beaver problem is to find the TM which runs longest before quasihalting."[5]

References