{"id":"https://openalex.org/W2007520000","doi":"https://doi.org/10.1016/0304-3975(96)00092-8","title":"The undecidability of simultaneous rigid E-unification","display_name":"The undecidability of simultaneous rigid E-unification","publication_year":1996,"publication_date":"1996-10-01","ids":{"openalex":"https://openalex.org/W2007520000","doi":"https://doi.org/10.1016/0304-3975(96)00092-8","mag":"2007520000"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(96)00092-8","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(96)00092-8","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":null,"display_name":"Anatoli Degtyarev","orcid":null},"institutions":[{"id":"https://openalex.org/I123387679","display_name":"Uppsala University","ror":"https://ror.org/048a87296","country_code":"SE","type":"education","lineage":["https://openalex.org/I123387679"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Anatoli Degtyarev","raw_affiliation_strings":["Computing Science Department, Uppsala University, Box 311, S 751 05 Uppsala, Sweden"],"affiliations":[{"raw_affiliation_string":"Computing Science Department, Uppsala University, Box 311, S 751 05 Uppsala, Sweden","institution_ids":["https://openalex.org/I123387679"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5054629753","display_name":"\u0410\u043d\u0434\u0440\u0435\u0439 \u0412\u043e\u0440\u043e\u043d\u043a\u043e\u0432","orcid":"https://orcid.org/0009-0009-4367-4885"},"institutions":[{"id":"https://openalex.org/I123387679","display_name":"Uppsala University","ror":"https://ror.org/048a87296","country_code":"SE","type":"education","lineage":["https://openalex.org/I123387679"]}],"countries":["SE"],"is_corresponding":true,"raw_author_name":"Andrei Voronkov","raw_affiliation_strings":["Computing Science Department, Uppsala University, Box 311, S 751 05 Uppsala, Sweden"],"affiliations":[{"raw_affiliation_string":"Computing Science Department, Uppsala University, Box 311, S 751 05 Uppsala, Sweden","institution_ids":["https://openalex.org/I123387679"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5054629753"],"corresponding_institution_ids":["https://openalex.org/I123387679"],"apc_list":{"value":2690,"currency":"USD","value_usd":2690},"apc_paid":null,"fwci":7.9705,"has_fulltext":false,"cited_by_count":40,"citation_normalized_percentile":{"value":0.97475865,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"166","issue":"1-2","first_page":"291","last_page":"300"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10126","display_name":"Logic, programming, and type systems","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T10126","display_name":"Logic, programming, and type systems","score":0.9998000264167786,"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"}},{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9991999864578247,"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"}},{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.9800999760627747,"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/unification","display_name":"Unification","score":0.9334214925765991},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.9007521867752075},{"id":"https://openalex.org/keywords/undecidable-problem","display_name":"Undecidable problem","score":0.8857157230377197},{"id":"https://openalex.org/keywords/mathematical-proof","display_name":"Mathematical proof","score":0.6636280417442322},{"id":"https://openalex.org/keywords/fragment","display_name":"Fragment (logic)","score":0.6202730536460876},{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.6144000887870789},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5828750729560852},{"id":"https://openalex.org/keywords/connection","display_name":"Connection (principal bundle)","score":0.461040735244751},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.4229018986225128},{"id":"https://openalex.org/keywords/calculus","display_name":"Calculus (dental)","score":0.3921404182910919},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3499055504798889},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.34866616129875183},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3365654945373535},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.2604234218597412},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.2000245451927185},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.0814979076385498}],"concepts":[{"id":"https://openalex.org/C96146094","wikidata":"https://www.wikidata.org/wiki/Q609057","display_name":"Unification","level":2,"score":0.9334214925765991},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.9007521867752075},{"id":"https://openalex.org/C192034797","wikidata":"https://www.wikidata.org/wiki/Q3502995","display_name":"Undecidable problem","level":3,"score":0.8857157230377197},{"id":"https://openalex.org/C108710211","wikidata":"https://www.wikidata.org/wiki/Q11538","display_name":"Mathematical proof","level":2,"score":0.6636280417442322},{"id":"https://openalex.org/C2776235265","wikidata":"https://www.wikidata.org/wiki/Q18392052","display_name":"Fragment (logic)","level":2,"score":0.6202730536460876},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.6144000887870789},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5828750729560852},{"id":"https://openalex.org/C13355873","wikidata":"https://www.wikidata.org/wiki/Q2920850","display_name":"Connection (principal bundle)","level":2,"score":0.461040735244751},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.4229018986225128},{"id":"https://openalex.org/C2777686260","wikidata":"https://www.wikidata.org/wiki/Q144037","display_name":"Calculus (dental)","level":2,"score":0.3921404182910919},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3499055504798889},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.34866616129875183},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3365654945373535},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.2604234218597412},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.2000245451927185},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0814979076385498},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/0304-3975(96)00092-8","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(96)00092-8","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"},{"id":"pmh:oai:pure.atira.dk:openaire_cris_publications/3a466017-0747-4a87-bb05-8419cc1add76","is_oa":false,"landing_page_url":"https://research.manchester.ac.uk/en/publications/3a466017-0747-4a87-bb05-8419cc1add76","pdf_url":null,"source":{"id":"https://openalex.org/S4306400662","display_name":"Research Explorer (The University of Manchester)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I28407311","host_organization_name":"University of Manchester","host_organization_lineage":["https://openalex.org/I28407311"],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Degtyarev, A & Voronkov, A 1996, 'The Undecidability of Simultaneous Rigid E-Unification', Theoretical Computer Science, vol. 166, no. 1&2, pp. 291-300. https://doi.org/10.1016/0304-3975(96)00092-8","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.5799999833106995,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":49,"referenced_works":["https://openalex.org/W71290743","https://openalex.org/W1492530167","https://openalex.org/W1494187224","https://openalex.org/W1508932139","https://openalex.org/W1510883375","https://openalex.org/W1513034780","https://openalex.org/W1528842637","https://openalex.org/W1567038084","https://openalex.org/W1594285439","https://openalex.org/W1606566547","https://openalex.org/W1692739636","https://openalex.org/W1859288891","https://openalex.org/W1917690128","https://openalex.org/W1968605571","https://openalex.org/W1974082531","https://openalex.org/W1997535993","https://openalex.org/W1999336350","https://openalex.org/W2005090804","https://openalex.org/W2018221833","https://openalex.org/W2020852080","https://openalex.org/W2059054133","https://openalex.org/W2061877402","https://openalex.org/W2062893737","https://openalex.org/W2095436832","https://openalex.org/W2105602558","https://openalex.org/W2128805181","https://openalex.org/W2149015191","https://openalex.org/W2490560859","https://openalex.org/W2493672872","https://openalex.org/W2506980730","https://openalex.org/W2547662413","https://openalex.org/W2911865844","https://openalex.org/W4233471482","https://openalex.org/W4245191564","https://openalex.org/W6602929820","https://openalex.org/W6629725689","https://openalex.org/W6630503444","https://openalex.org/W6630917655","https://openalex.org/W6631514011","https://openalex.org/W6633955012","https://openalex.org/W6636112639","https://openalex.org/W6637486080","https://openalex.org/W6639129581","https://openalex.org/W6640186297","https://openalex.org/W6642626171","https://openalex.org/W6643721189","https://openalex.org/W6649627197","https://openalex.org/W6676024651","https://openalex.org/W6682039859"],"related_works":["https://openalex.org/W1568007287","https://openalex.org/W2007520000","https://openalex.org/W2045137510","https://openalex.org/W4300794829","https://openalex.org/W2581629772","https://openalex.org/W2144311624","https://openalex.org/W2060473848","https://openalex.org/W2339589988","https://openalex.org/W1996177377","https://openalex.org/W1483892218"],"abstract_inverted_index":null,"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-04-21T08:09:41.155169","created_date":"2025-10-10T00:00:00"}