{"id":"https://openalex.org/W1981106003","doi":"https://doi.org/10.1137/0213016","title":"Two Tapes are Better than One for Nondeterministic Machines","display_name":"Two Tapes are Better than One for Nondeterministic Machines","publication_year":1984,"publication_date":"1984-05-01","ids":{"openalex":"https://openalex.org/W1981106003","doi":"https://doi.org/10.1137/0213016","mag":"1981106003"},"language":"en","primary_location":{"id":"doi:10.1137/0213016","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0213016","pdf_url":null,"source":{"id":"https://openalex.org/S153560523","display_name":"SIAM Journal on Computing","issn_l":"0097-5397","issn":["0097-5397","1095-7111"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Computing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5097662306","display_name":"Pavol Duris","orcid":null},"institutions":[{"id":"https://openalex.org/I207624831","display_name":"Slovak Academy of Sciences","ror":"https://ror.org/03h7qq074","country_code":"SK","type":"funder","lineage":["https://openalex.org/I207624831"]}],"countries":["SK"],"is_corresponding":true,"raw_author_name":"Pavol D\u00fari\u015b","raw_affiliation_strings":["Slovak Acad. of Sci., Bratislava, Czechoslovakia"],"affiliations":[{"raw_affiliation_string":"Slovak Acad. of Sci., Bratislava, Czechoslovakia","institution_ids":["https://openalex.org/I207624831"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048955152","display_name":"Zvi Galil","orcid":null},"institutions":[{"id":"https://openalex.org/I16391192","display_name":"Tel Aviv University","ror":"https://ror.org/04mhzgx49","country_code":"IL","type":"education","lineage":["https://openalex.org/I16391192"]}],"countries":["IL"],"is_corresponding":false,"raw_author_name":"Zvi Galil","raw_affiliation_strings":["Tel Aviv University, Tel Aviv, Israel,"],"affiliations":[{"raw_affiliation_string":"Tel Aviv University, Tel Aviv, Israel,","institution_ids":["https://openalex.org/I16391192"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5097662306"],"corresponding_institution_ids":["https://openalex.org/I207624831"],"apc_list":null,"apc_paid":null,"fwci":2.1105,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.8628675,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"2","first_page":"219","last_page":"227"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9739999771118164,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9739999771118164,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12288","display_name":"Optimization and Search Problems","score":0.97079998254776,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12072","display_name":"Machine Learning and Algorithms","score":0.9067000150680542,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/nondeterministic-algorithm","display_name":"Nondeterministic algorithm","score":0.9116383790969849},{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.8110513091087341},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.546079158782959},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4252609312534332},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.34898221492767334},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3321053981781006},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.28480982780456543}],"concepts":[{"id":"https://openalex.org/C176181172","wikidata":"https://www.wikidata.org/wiki/Q3490301","display_name":"Nondeterministic algorithm","level":2,"score":0.9116383790969849},{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.8110513091087341},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.546079158782959},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4252609312534332},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.34898221492767334},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3321053981781006},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.28480982780456543},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1137/0213016","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0213016","pdf_url":null,"source":{"id":"https://openalex.org/S153560523","display_name":"SIAM Journal on Computing","issn_l":"0097-5397","issn":["0097-5397","1095-7111"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Computing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","display_name":"Reduced inequalities","score":0.5099999904632568}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W1553753500","https://openalex.org/W1817451992","https://openalex.org/W1986188250","https://openalex.org/W1996834809","https://openalex.org/W2055357774","https://openalex.org/W2090627896"],"related_works":["https://openalex.org/W1979597421","https://openalex.org/W2007980826","https://openalex.org/W184826316","https://openalex.org/W3132573772","https://openalex.org/W2898732469","https://openalex.org/W1555347172","https://openalex.org/W1629505938","https://openalex.org/W2155075753","https://openalex.org/W2269169662","https://openalex.org/W1606810574"],"abstract_inverted_index":{"It":[0],"is":[1,75],"known":[2],"that":[3,18,29,53,68],"k":[4,39],"tapes":[5,11,20,40],"are":[6,21,33,41,59],"no":[7,42],"better":[8,22,34,43,60,76],"than":[9,23,35,44,61,77],"two":[10,19,30,45,55],"for":[12,46,69],"nondeterministic":[13,47,71],"machines.":[14],"We":[15,65],"show":[16,28,52,67],"here":[17],"one.":[24],"In":[25],"fact,":[26],"we":[27,51],"pushdown":[31,57],"stores":[32,58],"one":[36,62],"tape.":[37,64],"Also,":[38],"reversal-bounded":[48,56,63,78],"machines;":[49],"and":[50],"even":[54],"also":[66],"one-tape":[70],"machines,":[72],"unrestricted":[73],"operation":[74],"operation.":[79]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
