Two heads are better than two tapes:
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...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Amsterdam
1994
|
| Series: | Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS
94,18 |
| Subjects: | |
| Summary: | 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." |
| Physical Description: | 12 S. |
Staff View
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| 245 | 1 | 0 | |a Two heads are better than two tapes |c Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi |
| 264 | 1 | |a Amsterdam |c 1994 | |
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| 490 | 1 | |a Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS |v 94,18 | |
| 520 | 3 | |a 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." | |
| 650 | 4 | |a Turing machines | |
| 700 | 1 | |a Seiferas, Joel I. Seiferas |e Verfasser |4 aut | |
| 700 | 1 | |a Vitányi, Paul M. |e Verfasser |4 aut | |
| 810 | 2 | |a Department of Computer Science: Report CS |t Centrum voor Wiskunde en Informatica <Amsterdam> |v 94,18 |w (DE-604)BV008928356 |9 94,18 | |
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Record in the Search Index
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| any_adam_object | |
| author | Liang, Tao Seiferas, Joel I. Seiferas Vitányi, Paul M. |
| author_facet | Liang, Tao Seiferas, Joel I. Seiferas Vitányi, Paul M. |
| author_role | aut aut aut |
| author_sort | Liang, Tao |
| author_variant | t l tl j i s s jis jiss p m v pm pmv |
| building | Verbundindex |
| bvnumber | BV010157163 |
| ctrlnum | (OCoLC)31639804 (DE-599)BVBBV010157163 |
| format | Book |
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| id | DE-604.BV010157163 |
| illustrated | Not Illustrated |
| indexdate | 2024-07-09T17:47:30Z |
| institution | BVB |
| language | English |
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| oclc_num | 31639804 |
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| owner_facet | DE-19 DE-BY-UBM |
| physical | 12 S. |
| publishDate | 1994 |
| publishDateSearch | 1994 |
| publishDateSort | 1994 |
| record_format | marc |
| series2 | Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS |
| spelling | Liang, Tao Verfasser aut Two heads are better than two tapes Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi Amsterdam 1994 12 S. txt rdacontent n rdamedia nc rdacarrier Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS 94,18 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." Turing machines Seiferas, Joel I. Seiferas Verfasser aut Vitányi, Paul M. Verfasser aut Department of Computer Science: Report CS Centrum voor Wiskunde en Informatica <Amsterdam> 94,18 (DE-604)BV008928356 94,18 |
| spellingShingle | Liang, Tao Seiferas, Joel I. Seiferas Vitányi, Paul M. Two heads are better than two tapes Turing machines |
| title | Two heads are better than two tapes |
| title_auth | Two heads are better than two tapes |
| title_exact_search | Two heads are better than two tapes |
| title_full | Two heads are better than two tapes Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi |
| title_fullStr | Two heads are better than two tapes Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi |
| title_full_unstemmed | Two heads are better than two tapes Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi |
| title_short | Two heads are better than two tapes |
| title_sort | two heads are better than two tapes |
| topic | Turing machines |
| topic_facet | Turing machines |
| volume_link | (DE-604)BV008928356 |
| work_keys_str_mv | AT liangtao twoheadsarebetterthantwotapes AT seiferasjoeliseiferas twoheadsarebetterthantwotapes AT vitanyipaulm twoheadsarebetterthantwotapes |