{"id":"https://openalex.org/W1983106665","doi":"https://doi.org/10.1016/0304-3975(87)90138-1","title":"On reversal bounded alternating Turing machines","display_name":"On reversal bounded alternating Turing machines","publication_year":1987,"publication_date":"1987-10-01","ids":{"openalex":"https://openalex.org/W1983106665","doi":"https://doi.org/10.1016/0304-3975(87)90138-1","mag":"1983106665"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(87)90138-1","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(87)90138-1","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","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/A5001544783","display_name":"Maciej Li\u015bkiewicz","orcid":"https://orcid.org/0000-0003-0059-5086"},"institutions":[{"id":"https://openalex.org/I219388962","display_name":"University of Wroc\u0142aw","ror":"https://ror.org/00yae6e25","country_code":"PL","type":"education","lineage":["https://openalex.org/I219388962"]},{"id":"https://openalex.org/I4210087266","display_name":"Institute of Computer Science","ror":"https://ror.org/003fvp964","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210087266","https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":true,"raw_author_name":"Maciej Li\u015bkiewicz","raw_affiliation_strings":["Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","Univ. of Wroctaw, Wroctaw, Poland#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","institution_ids":["https://openalex.org/I219388962","https://openalex.org/I4210087266"]},{"raw_affiliation_string":"Univ. of Wroctaw, Wroctaw, Poland#TAB#","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019738192","display_name":"Krzysztof Lory\u015b","orcid":null},"institutions":[{"id":"https://openalex.org/I219388962","display_name":"University of Wroc\u0142aw","ror":"https://ror.org/00yae6e25","country_code":"PL","type":"education","lineage":["https://openalex.org/I219388962"]},{"id":"https://openalex.org/I4210087266","display_name":"Institute of Computer Science","ror":"https://ror.org/003fvp964","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210087266","https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Krzysztof Lory\u015b","raw_affiliation_strings":["Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","Univ. of Wroctaw, Wroctaw, Poland#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","institution_ids":["https://openalex.org/I219388962","https://openalex.org/I4210087266"]},{"raw_affiliation_string":"Univ. of Wroctaw, Wroctaw, Poland#TAB#","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5042257072","display_name":"Marek Piotr\u00f3w","orcid":"https://orcid.org/0000-0002-4734-1721"},"institutions":[{"id":"https://openalex.org/I219388962","display_name":"University of Wroc\u0142aw","ror":"https://ror.org/00yae6e25","country_code":"PL","type":"education","lineage":["https://openalex.org/I219388962"]},{"id":"https://openalex.org/I4210087266","display_name":"Institute of Computer Science","ror":"https://ror.org/003fvp964","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210087266","https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Marek Piotr\u00f3w","raw_affiliation_strings":["Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","Univ. of Wroctaw, Wroctaw, Poland#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Computer Science, University of Wroclaw, 51\u2013151 Wroclaw, Poland","institution_ids":["https://openalex.org/I219388962","https://openalex.org/I4210087266"]},{"raw_affiliation_string":"Univ. of Wroctaw, Wroctaw, Poland#TAB#","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5001544783"],"corresponding_institution_ids":["https://openalex.org/I219388962","https://openalex.org/I4210087266"],"apc_list":{"value":2690,"currency":"USD","value_usd":2690},"apc_paid":null,"fwci":1.0651,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.7329028,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"54","issue":"2-3","first_page":"331","last_page":"339"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"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/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"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/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9987000226974487,"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/T11269","display_name":"Algorithms and Data Compression","score":0.9948999881744385,"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/nspace","display_name":"NSPACE","score":0.7985196113586426},{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.7231737375259399},{"id":"https://openalex.org/keywords/turing-machine","display_name":"Turing machine","score":0.715255856513977},{"id":"https://openalex.org/keywords/time-hierarchy-theorem","display_name":"Time hierarchy theorem","score":0.6807973384857178},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.6780744791030884},{"id":"https://openalex.org/keywords/nondeterministic-algorithm","display_name":"Nondeterministic algorithm","score":0.5934017300605774},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5215420722961426},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5095529556274414},{"id":"https://openalex.org/keywords/description-number","display_name":"Description number","score":0.500596284866333},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4776950180530548},{"id":"https://openalex.org/keywords/pspace","display_name":"PSPACE","score":0.47682684659957886},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3862820267677307},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.3807562589645386},{"id":"https://openalex.org/keywords/universal-turing-machine","display_name":"Universal Turing machine","score":0.2152295708656311},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.17431306838989258},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.1649121642112732},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.10248273611068726},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.09466031193733215},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.05338969826698303},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.053356170654296875}],"concepts":[{"id":"https://openalex.org/C201958364","wikidata":"https://www.wikidata.org/wiki/Q1756295","display_name":"NSPACE","level":5,"score":0.7985196113586426},{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.7231737375259399},{"id":"https://openalex.org/C29248071","wikidata":"https://www.wikidata.org/wiki/Q163310","display_name":"Turing machine","level":3,"score":0.715255856513977},{"id":"https://openalex.org/C48415503","wikidata":"https://www.wikidata.org/wiki/Q5251122","display_name":"Time hierarchy theorem","level":5,"score":0.6807973384857178},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.6780744791030884},{"id":"https://openalex.org/C176181172","wikidata":"https://www.wikidata.org/wiki/Q3490301","display_name":"Nondeterministic algorithm","level":2,"score":0.5934017300605774},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5215420722961426},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5095529556274414},{"id":"https://openalex.org/C179061269","wikidata":"https://www.wikidata.org/wiki/Q5263786","display_name":"Description number","level":5,"score":0.500596284866333},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4776950180530548},{"id":"https://openalex.org/C197685441","wikidata":"https://www.wikidata.org/wiki/Q500716","display_name":"PSPACE","level":3,"score":0.47682684659957886},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3862820267677307},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.3807562589645386},{"id":"https://openalex.org/C131671149","wikidata":"https://www.wikidata.org/wiki/Q2703890","display_name":"Universal Turing machine","level":4,"score":0.2152295708656311},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.17431306838989258},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.1649121642112732},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.10248273611068726},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.09466031193733215},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.05338969826698303},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.053356170654296875}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0304-3975(87)90138-1","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(87)90138-1","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1968529600","https://openalex.org/W1972197524","https://openalex.org/W1980738498","https://openalex.org/W1994332025","https://openalex.org/W2010032869","https://openalex.org/W2023999667","https://openalex.org/W2046750655","https://openalex.org/W2055357774","https://openalex.org/W2065579926","https://openalex.org/W2071438969","https://openalex.org/W2076858908","https://openalex.org/W2094082874","https://openalex.org/W2099285593","https://openalex.org/W2913527980","https://openalex.org/W3023466934","https://openalex.org/W4241108585","https://openalex.org/W6642312417","https://openalex.org/W6645733142","https://openalex.org/W6668112748","https://openalex.org/W6675185245","https://openalex.org/W7008717140"],"related_works":["https://openalex.org/W2037124586","https://openalex.org/W2156308118","https://openalex.org/W1662868588","https://openalex.org/W2341138125","https://openalex.org/W1982159199","https://openalex.org/W195780958","https://openalex.org/W2088973818","https://openalex.org/W1555195996","https://openalex.org/W4388215614","https://openalex.org/W2048353152"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}
