{"id":"https://openalex.org/W2063954960","doi":"https://doi.org/10.1007/s10485-009-9201-8","title":"On Proper and Exterior Sequentiality","display_name":"On Proper and Exterior Sequentiality","publication_year":2009,"publication_date":"2009-05-14","ids":{"openalex":"https://openalex.org/W2063954960","doi":"https://doi.org/10.1007/s10485-009-9201-8","mag":"2063954960"},"language":"en","primary_location":{"id":"doi:10.1007/s10485-009-9201-8","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10485-009-9201-8","pdf_url":null,"source":{"id":"https://openalex.org/S148906134","display_name":"Applied Categorical Structures","issn_l":"0927-2852","issn":["0927-2852","1572-9095"],"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":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Applied Categorical Structures","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://investigacion.unirioja.es/documentos/5bbc693bb750603269e8179c","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101532272","display_name":"Luis Espa\u00f1ol Gonz\u00e1lez","orcid":"https://orcid.org/0000-0001-6111-8924"},"institutions":[{"id":"https://openalex.org/I168974976","display_name":"Universidad de La Rioja","ror":"https://ror.org/0553yr311","country_code":"ES","type":"education","lineage":["https://openalex.org/I168974976"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Luis Espa\u00f1ol","raw_affiliation_strings":["Departamento de Matem\u00e1ticas y Computaci\u00f3n, Universidad de La Rioja, 26004, Logro\u00f1o, Spain","Universidad de  La Rioja"],"affiliations":[{"raw_affiliation_string":"Departamento de Matem\u00e1ticas y Computaci\u00f3n, Universidad de La Rioja, 26004, Logro\u00f1o, Spain","institution_ids":["https://openalex.org/I168974976"]},{"raw_affiliation_string":"Universidad de  La Rioja","institution_ids":["https://openalex.org/I168974976"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077546214","display_name":"J.M. Garc\u00eda-Calcines","orcid":"https://orcid.org/0000-0002-8969-6694"},"institutions":[{"id":"https://openalex.org/I158438070","display_name":"Universidad de La Laguna","ror":"https://ror.org/01r9z8p25","country_code":"ES","type":"education","lineage":["https://openalex.org/I158438070"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Jose Manuel Garc\u00eda-Calcines","raw_affiliation_strings":["Departamento de Matem\u00e1tica Fundamental, Universidad de La Laguna, 38271, San Crist\u00f3bal de La Laguna, Spain","Universidad de la Laguna"],"affiliations":[{"raw_affiliation_string":"Departamento de Matem\u00e1tica Fundamental, Universidad de La Laguna, 38271, San Crist\u00f3bal de La Laguna, Spain","institution_ids":["https://openalex.org/I158438070"]},{"raw_affiliation_string":"Universidad de la Laguna","institution_ids":["https://openalex.org/I158438070"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5039663546","display_name":"M. Carmen M\u00ednguez","orcid":null},"institutions":[{"id":"https://openalex.org/I168974976","display_name":"Universidad de La Rioja","ror":"https://ror.org/0553yr311","country_code":"ES","type":"education","lineage":["https://openalex.org/I168974976"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. Carmen M\u00ednguez","raw_affiliation_strings":["Departamento de Matem\u00e1ticas y Computaci\u00f3n, Universidad de La Rioja, 26004, Logro\u00f1o, Spain","Universidad de  La Rioja"],"affiliations":[{"raw_affiliation_string":"Departamento de Matem\u00e1ticas y Computaci\u00f3n, Universidad de La Rioja, 26004, Logro\u00f1o, Spain","institution_ids":["https://openalex.org/I168974976"]},{"raw_affiliation_string":"Universidad de  La Rioja","institution_ids":["https://openalex.org/I168974976"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5101532272"],"corresponding_institution_ids":["https://openalex.org/I168974976"],"apc_list":{"value":2390,"currency":"EUR","value_usd":2990},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.1442926,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":"18","issue":"6","first_page":"653","last_page":"668"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10896","display_name":"Homotopy and Cohomology in Algebraic Topology","score":0.998199999332428,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10896","display_name":"Homotopy and Cohomology in Algebraic Topology","score":0.998199999332428,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"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/T10304","display_name":"Geometric and Algebraic Topology","score":0.9961000084877014,"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/T10899","display_name":"Advanced Operator Algebra Research","score":0.9932000041007996,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.6377931833267212},{"id":"https://openalex.org/keywords/theory-of-computation","display_name":"Theory of computation","score":0.6012600064277649},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5641955733299255},{"id":"https://openalex.org/keywords/calculus","display_name":"Calculus (dental)","score":0.4519805312156677},{"id":"https://openalex.org/keywords/category-theory","display_name":"Category theory","score":0.4415304958820343},{"id":"https://openalex.org/keywords/natural","display_name":"Natural (archaeology)","score":0.4250786602497101},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.31671464443206787},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2893325090408325},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.24939295649528503},{"id":"https://openalex.org/keywords/history","display_name":"History","score":0.16961008310317993},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.09980899095535278}],"concepts":[{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.6377931833267212},{"id":"https://openalex.org/C24858836","wikidata":"https://www.wikidata.org/wiki/Q844718","display_name":"Theory of computation","level":2,"score":0.6012600064277649},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5641955733299255},{"id":"https://openalex.org/C2777686260","wikidata":"https://www.wikidata.org/wiki/Q144037","display_name":"Calculus (dental)","level":2,"score":0.4519805312156677},{"id":"https://openalex.org/C54884031","wikidata":"https://www.wikidata.org/wiki/Q217413","display_name":"Category theory","level":2,"score":0.4415304958820343},{"id":"https://openalex.org/C2776608160","wikidata":"https://www.wikidata.org/wiki/Q4785462","display_name":"Natural (archaeology)","level":2,"score":0.4250786602497101},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.31671464443206787},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2893325090408325},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.24939295649528503},{"id":"https://openalex.org/C95457728","wikidata":"https://www.wikidata.org/wiki/Q309","display_name":"History","level":0,"score":0.16961008310317993},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.09980899095535278},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1007/s10485-009-9201-8","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10485-009-9201-8","pdf_url":null,"source":{"id":"https://openalex.org/S148906134","display_name":"Applied Categorical Structures","issn_l":"0927-2852","issn":["0927-2852","1572-9095"],"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":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Applied Categorical Structures","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.315.1206","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.315.1206","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/0711.0299v1.pdf","raw_type":"text"},{"id":"pmh:oai:portal.dialnet.es:doc/5bbc693bb750603269e8179c","is_oa":true,"landing_page_url":"https://investigacion.unirioja.es/documentos/5bbc693bb750603269e8179c","pdf_url":null,"source":{"id":"https://openalex.org/S4306402551","display_name":"RIUR (Universidad de La Rioja)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I3032752892","host_organization_name":"Universidad Internacional de La Rioja","host_organization_lineage":["https://openalex.org/I3032752892"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"pmh:oai:portal.dialnet.es:doc/5bbc693bb750603269e8179c","is_oa":true,"landing_page_url":"https://investigacion.unirioja.es/documentos/5bbc693bb750603269e8179c","pdf_url":null,"source":{"id":"https://openalex.org/S4306402551","display_name":"RIUR (Universidad de La Rioja)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I3032752892","host_organization_name":"Universidad Internacional de La Rioja","host_organization_lineage":["https://openalex.org/I3032752892"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/11","score":0.7599999904632568,"display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W651433260","https://openalex.org/W768370832","https://openalex.org/W1823042607","https://openalex.org/W2044644441","https://openalex.org/W2045614673","https://openalex.org/W2084404970","https://openalex.org/W2085668465","https://openalex.org/W2123519872","https://openalex.org/W2321428931","https://openalex.org/W2327090503","https://openalex.org/W2334981222","https://openalex.org/W2802079892"],"related_works":["https://openalex.org/W2075768550","https://openalex.org/W3022218857","https://openalex.org/W2369178846","https://openalex.org/W2082716031","https://openalex.org/W2370289839","https://openalex.org/W2933494595","https://openalex.org/W1568049691","https://openalex.org/W2581850242","https://openalex.org/W2160325950","https://openalex.org/W2321004070"],"abstract_inverted_index":null,"counts_by_year":[{"year":2015,"cited_by_count":2}],"updated_date":"2026-04-17T18:11:37.981687","created_date":"2025-10-10T00:00:00"}