{"id":"https://openalex.org/W1541384626","doi":"https://doi.org/10.1007/3-540-56939-1_96","title":"An effective version of Stallings' theorem in the case of context-free groups","display_name":"An effective version of Stallings' theorem in the case of context-free groups","publication_year":1993,"publication_date":"1993-01-01","ids":{"openalex":"https://openalex.org/W1541384626","doi":"https://doi.org/10.1007/3-540-56939-1_96","mag":"1541384626"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-56939-1_96","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-56939-1_96","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5079033963","display_name":"G\u00e9raud S\u00e9nizergues","orcid":"https://orcid.org/0000-0002-5800-2506"},"institutions":[{"id":"https://openalex.org/I15057530","display_name":"Universit\u00e9 de Bordeaux","ror":"https://ror.org/057qpr032","country_code":"FR","type":"education","lineage":["https://openalex.org/I15057530"]}],"countries":["FR"],"is_corresponding":true,"raw_author_name":"G\u00e9raud S\u00e9nizergues","raw_affiliation_strings":["LaBri and UER Math-info, Universit\u00e9 Bordeaux1, 351 Cours de la lib\u00e9ration, 33405, Talence Cedex","Universit\u00e9 Bordeaux1"],"affiliations":[{"raw_affiliation_string":"LaBri and UER Math-info, Universit\u00e9 Bordeaux1, 351 Cours de la lib\u00e9ration, 33405, Talence Cedex","institution_ids":["https://openalex.org/I15057530"]},{"raw_affiliation_string":"Universit\u00e9 Bordeaux1","institution_ids":["https://openalex.org/I15057530"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5079033963"],"corresponding_institution_ids":["https://openalex.org/I15057530"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":1.1257,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.76570619,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"478","last_page":"495"},"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/T10304","display_name":"Geometric and Algebraic Topology","score":0.9970999956130981,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10126","display_name":"Logic, programming, and type systems","score":0.972000002861023,"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/decidability","display_name":"Decidability","score":0.85780930519104},{"id":"https://openalex.org/keywords/word-problem","display_name":"Word problem (mathematics education)","score":0.7028970122337341},{"id":"https://openalex.org/keywords/free-product","display_name":"Free product","score":0.6753780841827393},{"id":"https://openalex.org/keywords/isomorphism","display_name":"Isomorphism (crystallography)","score":0.6492470502853394},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5670052170753479},{"id":"https://openalex.org/keywords/product","display_name":"Product (mathematics)","score":0.5117987990379333},{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.5026636123657227},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.486868292093277},{"id":"https://openalex.org/keywords/group","display_name":"Group (periodic table)","score":0.4642902612686157},{"id":"https://openalex.org/keywords/stallings-theorem-about-ends-of-groups","display_name":"Stallings theorem about ends of groups","score":0.43184319138526917},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.41252368688583374},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.40739697217941284},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.3762251138687134},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.34321749210357666},{"id":"https://openalex.org/keywords/finitely-generated-abelian-group","display_name":"Finitely-generated abelian group","score":0.2819453179836273},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.19859427213668823},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.14261287450790405},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.10450094938278198}],"concepts":[{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.85780930519104},{"id":"https://openalex.org/C90988201","wikidata":"https://www.wikidata.org/wiki/Q255912","display_name":"Word problem (mathematics education)","level":2,"score":0.7028970122337341},{"id":"https://openalex.org/C47527751","wikidata":"https://www.wikidata.org/wiki/Q1454165","display_name":"Free product","level":3,"score":0.6753780841827393},{"id":"https://openalex.org/C203436722","wikidata":"https://www.wikidata.org/wiki/Q902950","display_name":"Isomorphism (crystallography)","level":3,"score":0.6492470502853394},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5670052170753479},{"id":"https://openalex.org/C90673727","wikidata":"https://www.wikidata.org/wiki/Q901718","display_name":"Product (mathematics)","level":2,"score":0.5117987990379333},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.5026636123657227},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.486868292093277},{"id":"https://openalex.org/C2781311116","wikidata":"https://www.wikidata.org/wiki/Q83306","display_name":"Group (periodic table)","level":2,"score":0.4642902612686157},{"id":"https://openalex.org/C58249144","wikidata":"https://www.wikidata.org/wiki/Q7597316","display_name":"Stallings theorem about ends of groups","level":3,"score":0.43184319138526917},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.41252368688583374},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.40739697217941284},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.3762251138687134},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.34321749210357666},{"id":"https://openalex.org/C162860070","wikidata":"https://www.wikidata.org/wiki/Q142140","display_name":"Finitely-generated abelian group","level":2,"score":0.2819453179836273},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.19859427213668823},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.14261287450790405},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.10450094938278198},{"id":"https://openalex.org/C115624301","wikidata":"https://www.wikidata.org/wiki/Q895901","display_name":"Crystal structure","level":2,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-56939-1_96","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-56939-1_96","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W606341974","https://openalex.org/W1536001468","https://openalex.org/W1545078593","https://openalex.org/W1963661582","https://openalex.org/W1971416129","https://openalex.org/W1993901943","https://openalex.org/W2035561341","https://openalex.org/W2082163287","https://openalex.org/W2094403718","https://openalex.org/W2169463973","https://openalex.org/W2405031571","https://openalex.org/W6641201371","https://openalex.org/W6648707620","https://openalex.org/W6831293616"],"related_works":["https://openalex.org/W1511851241","https://openalex.org/W4388697737","https://openalex.org/W4298186840","https://openalex.org/W2989978285","https://openalex.org/W4320718947","https://openalex.org/W3104010695","https://openalex.org/W4299295154","https://openalex.org/W2045561258","https://openalex.org/W4226435716","https://openalex.org/W1541384626"],"abstract_inverted_index":null,"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}