{"id":"https://openalex.org/W2034441873","doi":"https://doi.org/10.1016/0166-218x(79)90040-4","title":"On \u03f5 productions for terminals in E0L forms","display_name":"On \u03f5 productions for terminals in E0L forms","publication_year":1979,"publication_date":"1979-11-01","ids":{"openalex":"https://openalex.org/W2034441873","doi":"https://doi.org/10.1016/0166-218x(79)90040-4","mag":"2034441873"},"language":"en","primary_location":{"id":"doi:10.1016/0166-218x(79)90040-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0166-218x(79)90040-4","pdf_url":null,"source":{"id":"https://openalex.org/S171741597","display_name":"Discrete Applied Mathematics","issn_l":"0166-218X","issn":["0166-218X","1872-6771"],"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":"Discrete Applied Mathematics","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/A5003153709","display_name":"W. Ainhirn","orcid":null},"institutions":[{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":true,"raw_author_name":"W. Ainhirn","raw_affiliation_strings":["Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz/Austria","Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz, Austria"],"affiliations":[{"raw_affiliation_string":"Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz/Austria","institution_ids":["https://openalex.org/I4092182"]},{"raw_affiliation_string":"Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz, Austria","institution_ids":["https://openalex.org/I4092182"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5026864542","display_name":"Hermann Maurer","orcid":null},"institutions":[{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"H.A. Maurer","raw_affiliation_strings":["Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz/Austria","Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz, Austria"],"affiliations":[{"raw_affiliation_string":"Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz/Austria","institution_ids":["https://openalex.org/I4092182"]},{"raw_affiliation_string":"Institut f\u00fcr Informationsverarbeitung, Technische Universit\u00e4t Graz, Steyrergasse 17, A-8010 Graz, Austria","institution_ids":["https://openalex.org/I4092182"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5003153709"],"corresponding_institution_ids":["https://openalex.org/I4092182"],"apc_list":{"value":2750,"currency":"USD","value_usd":2750},"apc_paid":null,"fwci":3.7114,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.92802173,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":null,"biblio":{"volume":"1","issue":"3","first_page":"155","last_page":"166"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9873999953269958,"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":0.9873999953269958,"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/T10181","display_name":"Natural Language Processing Techniques","score":0.9746999740600586,"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/T13173","display_name":"Gender Studies in Language","score":0.9509000182151794,"subfield":{"id":"https://openalex.org/subfields/3318","display_name":"Gender Studies"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/modulo","display_name":"Modulo","score":0.874466061592102},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.7682123184204102},{"id":"https://openalex.org/keywords/equivalence","display_name":"Equivalence (formal languages)","score":0.76312255859375},{"id":"https://openalex.org/keywords/undecidable-problem","display_name":"Undecidable problem","score":0.7566084265708923},{"id":"https://openalex.org/keywords/logical-equivalence","display_name":"Logical equivalence","score":0.5411173701286316},{"id":"https://openalex.org/keywords/property","display_name":"Property (philosophy)","score":0.5341547727584839},{"id":"https://openalex.org/keywords/word","display_name":"Word (group theory)","score":0.4861581027507782},{"id":"https://openalex.org/keywords/word-problem","display_name":"Word problem (mathematics education)","score":0.4213990569114685},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.36272186040878296},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.3347932994365692},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.31227394938468933},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.25494134426116943},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.21407943964004517},{"id":"https://openalex.org/keywords/epistemology","display_name":"Epistemology","score":0.060929685831069946}],"concepts":[{"id":"https://openalex.org/C54732982","wikidata":"https://www.wikidata.org/wiki/Q1415345","display_name":"Modulo","level":2,"score":0.874466061592102},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7682123184204102},{"id":"https://openalex.org/C2780069185","wikidata":"https://www.wikidata.org/wiki/Q7977945","display_name":"Equivalence (formal languages)","level":2,"score":0.76312255859375},{"id":"https://openalex.org/C192034797","wikidata":"https://www.wikidata.org/wiki/Q3502995","display_name":"Undecidable problem","level":3,"score":0.7566084265708923},{"id":"https://openalex.org/C70846408","wikidata":"https://www.wikidata.org/wiki/Q220433","display_name":"Logical equivalence","level":3,"score":0.5411173701286316},{"id":"https://openalex.org/C189950617","wikidata":"https://www.wikidata.org/wiki/Q937228","display_name":"Property (philosophy)","level":2,"score":0.5341547727584839},{"id":"https://openalex.org/C90805587","wikidata":"https://www.wikidata.org/wiki/Q10944557","display_name":"Word (group theory)","level":2,"score":0.4861581027507782},{"id":"https://openalex.org/C90988201","wikidata":"https://www.wikidata.org/wiki/Q255912","display_name":"Word problem (mathematics education)","level":2,"score":0.4213990569114685},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.36272186040878296},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.3347932994365692},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.31227394938468933},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.25494134426116943},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.21407943964004517},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.060929685831069946},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0166-218x(79)90040-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0166-218x(79)90040-4","pdf_url":null,"source":{"id":"https://openalex.org/S171741597","display_name":"Discrete Applied Mathematics","issn_l":"0166-218X","issn":["0166-218X","1872-6771"],"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":"Discrete Applied Mathematics","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/4","score":0.6000000238418579,"display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W956032893","https://openalex.org/W1535681052","https://openalex.org/W1994017759","https://openalex.org/W2003137844","https://openalex.org/W2020151083","https://openalex.org/W2913550338"],"related_works":["https://openalex.org/W2058284624","https://openalex.org/W2158086683","https://openalex.org/W1492906489","https://openalex.org/W1511851241","https://openalex.org/W2282186771","https://openalex.org/W4288621333","https://openalex.org/W2911462610","https://openalex.org/W2049964808","https://openalex.org/W2038666277","https://openalex.org/W1995628728"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}
