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...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Amsterdam
1994
|
| Schriftenreihe: | Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS
94,18 |
| Schlagworte: | |
| Zusammenfassung: | 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." |
| Beschreibung: | 12 S. |
Internformat
MARC
| LEADER | 00000nam a2200000 cb4500 | ||
|---|---|---|---|
| 001 | BV010157163 | ||
| 003 | DE-604 | ||
| 005 | 00000000000000.0 | ||
| 007 | t | ||
| 008 | 950427s1994 |||| 00||| engod | ||
| 035 | |a (OCoLC)31639804 | ||
| 035 | |a (DE-599)BVBBV010157163 | ||
| 040 | |a DE-604 |b ger |e rakddb | ||
| 041 | 0 | |a eng | |
| 049 | |a DE-19 | ||
| 100 | 1 | |a Liang, Tao |e Verfasser |4 aut | |
| 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 | |
| 300 | |a 12 S. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 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 | |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-006747186 | ||
Datensatz im Suchindex
| _version_ | 1804124554183835648 |
|---|---|
| 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 |
| fullrecord | <?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01621nam a2200313 cb4500</leader><controlfield tag="001">BV010157163</controlfield><controlfield tag="003">DE-604</controlfield><controlfield tag="005">00000000000000.0</controlfield><controlfield tag="007">t</controlfield><controlfield tag="008">950427s1994 |||| 00||| engod</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)31639804</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)BVBBV010157163</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-604</subfield><subfield code="b">ger</subfield><subfield code="e">rakddb</subfield></datafield><datafield tag="041" ind1="0" ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="049" ind1=" " ind2=" "><subfield code="a">DE-19</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Liang, Tao</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Two heads are better than two tapes</subfield><subfield code="c">Tao Jiang ; J. I. Seiferas ; P. M. B. Vitányi</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Amsterdam</subfield><subfield code="c">1994</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">12 S.</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="490" ind1="1" ind2=" "><subfield code="a">Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS</subfield><subfield code="v">94,18</subfield></datafield><datafield tag="520" ind1="3" ind2=" "><subfield code="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."</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Turing machines</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Seiferas, Joel I. Seiferas</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Vitányi, Paul M.</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="810" ind1="2" ind2=" "><subfield code="a">Department of Computer Science: Report CS</subfield><subfield code="t">Centrum voor Wiskunde en Informatica <Amsterdam></subfield><subfield code="v">94,18</subfield><subfield code="w">(DE-604)BV008928356</subfield><subfield code="9">94,18</subfield></datafield><datafield tag="999" ind1=" " ind2=" "><subfield code="a">oai:aleph.bib-bvb.de:BVB01-006747186</subfield></datafield></record></collection> |
| id | DE-604.BV010157163 |
| illustrated | Not Illustrated |
| indexdate | 2024-07-09T17:47:30Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-006747186 |
| oclc_num | 31639804 |
| open_access_boolean | |
| owner | DE-19 DE-BY-UBM |
| 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 |