{"id":"https://openalex.org/W842820870","doi":"https://doi.org/10.4064/fm-21-1-114-126","title":"Sur les ensembles toujours de premi\u00e8re cat\u00e9gorie","display_name":"Sur les ensembles toujours de premi\u00e8re cat\u00e9gorie","publication_year":1933,"publication_date":"1933-01-01","ids":{"openalex":"https://openalex.org/W842820870","doi":"https://doi.org/10.4064/fm-21-1-114-126","mag":"842820870"},"language":"fr","primary_location":{"id":"doi:10.4064/fm-21-1-114-126","doi":"https://doi.org/10.4064/fm-21-1-114-126","is_oa":true,"landing_page_url":"https://doi.org/10.4064/fm-21-1-114-126","pdf_url":"https://www.impan.pl/shop/publication/transaction/download/product/93039?download.pdf","source":{"id":"https://openalex.org/S92430692","display_name":"Fundamenta Mathematicae","issn_l":"0016-2736","issn":["0016-2736","1730-6329"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","jufo-1","norway-1","poland-100","russia-white-list-3"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Fundamenta Mathematicae","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.impan.pl/shop/publication/transaction/download/product/93039?download.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5066298496","display_name":"Nicolas Lusin","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Nicolas Lusin","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5066298496"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.04,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"21","issue":null,"first_page":"114","last_page":"126"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11151","display_name":"Advanced Topology and Set Theory","score":0.9375,"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"}},"topics":[{"id":"https://openalex.org/T11151","display_name":"Advanced Topology and Set Theory","score":0.9375,"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/T11545","display_name":"Advanced Banach Space Theory","score":0.023399999365210533,"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/T10588","display_name":"Mathematical Dynamics and Fractals","score":0.011699999682605267,"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/first-category-sets","display_name":"first category sets","score":0.7390000224113464},{"id":"https://openalex.org/keywords/nowhere-dense-sets","display_name":"nowhere dense sets","score":0.7680000066757202},{"id":"https://openalex.org/keywords/baire-category-theorem","display_name":"Baire category theorem","score":0.8109999895095825},{"id":"https://openalex.org/keywords/baire-category","display_name":"Baire category","score":0.4000000059604645}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7427471280097961},{"id":"https://openalex.org/C15708023","wikidata":"https://www.wikidata.org/wiki/Q80083","display_name":"Humanities","level":1,"score":0.5126672983169556},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.332442045211792},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.1357738971710205}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4064/fm-21-1-114-126","doi":"https://doi.org/10.4064/fm-21-1-114-126","is_oa":true,"landing_page_url":"https://doi.org/10.4064/fm-21-1-114-126","pdf_url":"https://www.impan.pl/shop/publication/transaction/download/product/93039?download.pdf","source":{"id":"https://openalex.org/S92430692","display_name":"Fundamenta Mathematicae","issn_l":"0016-2736","issn":["0016-2736","1730-6329"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","jufo-1","norway-1","poland-100","russia-white-list-3"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Fundamenta Mathematicae","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.4064/fm-21-1-114-126","doi":"https://doi.org/10.4064/fm-21-1-114-126","is_oa":true,"landing_page_url":"https://doi.org/10.4064/fm-21-1-114-126","pdf_url":"https://www.impan.pl/shop/publication/transaction/download/product/93039?download.pdf","source":{"id":"https://openalex.org/S92430692","display_name":"Fundamenta Mathematicae","issn_l":"0016-2736","issn":["0016-2736","1730-6329"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","jufo-1","norway-1","poland-100","russia-white-list-3"],"host_organization":"https://openalex.org/P4310317485","host_organization_name":"Polish Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310317485"],"host_organization_lineage_names":["Polish Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Fundamenta Mathematicae","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":false},"content_urls":{"pdf":"https://content.openalex.org/works/W842820870.pdf"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1418251925","https://openalex.org/W1042909259","https://openalex.org/W1029368930","https://openalex.org/W976147233","https://openalex.org/W975317119","https://openalex.org/W919459443","https://openalex.org/W1001561843","https://openalex.org/W854819197","https://openalex.org/W3211328826","https://openalex.org/W959438826"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-05-22T06:13:13.366637","created_date":"2016-06-24T00:00:00"}
