WorldCat Identities

Seiferas, Joel I.

Works: 1 works in 1 publications in 0 languages and 1 library holdings
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Most widely held works by Joel I Seiferas
Two heads are better than two tapes by Tao Jiang( Book )

1 edition published in 1994 in Undetermined and held by 1 WorldCat member library worldwide

Abstract: "We show that a Turing machine with two single-head one-dimensional tapes cannot recognize the set [x2x' / x [member of] [0,1][superscript *] and x' is a prefix of x] in real time, although it can do so with three tapes, two two-dimensional tapes, or one two-head tape, or in linear time with just one tape. In particular, this settles the longstanding conjecture that a two-head Turing machine can recognize more languages in real time if its heads are on the same one-dimensional tape than if they are on separate one-dimensional tapes."
Audience Level
Audience Level
  Kids General Special  
Audience level: 0.83 (from 0.83 for Two heads ... to 0.83 for Two heads ...)

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