Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1205750623', 'doi': 'https://doi.org/10.4064/cm-46-2-181-184', 'title': 'A universal null graph whose domain has positive measure', 'display_name': 'A universal null graph whose domain has positive measure', 'publication_year': 1982, 'publication_date': '1982-01-01', 'ids': {'openalex': 'https://openalex.org/W1205750623', 'doi': 'https://doi.org/10.4064/cm-46-2-181-184', 'mag': '1205750623'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.4064/cm-46-2-181-184', 'pdf_url': 'https://www.impan.pl/shop/publication/transaction/download/product/103662?download.pdf', 'source': {'id': 'https://openalex.org/S111346810', 'display_name': 'Colloquium Mathematicum', 'issn_l': '0010-1354', 'issn': ['0010-1354', '1730-6302'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, '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': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'bronze', 'oa_url': 'https://www.impan.pl/shop/publication/transaction/download/product/103662?download.pdf', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5030778192', 'display_name': 'Gregory Cox', 'orcid': None}, 'institutions': [], 'countries': ['US'], 'is_corresponding': True, 'raw_author_name': 'G. V. Cox', 'raw_affiliation_strings': ['San Bernardino, California'], 'affiliations': [{'raw_affiliation_string': 'San Bernardino, California', 'institution_ids': []}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5030778192'], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 2, 'citation_normalized_percentile': {'value': 0.374721, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 62, 'max': 67}, 'biblio': {'volume': '46', 'issue': '2', 'first_page': '181', 'last_page': '184'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11703', 'display_name': 'Study of properties and structures of commutative rings', 'score': 0.9814, 'subfield': {'id': 'https://openalex.org/subfields/2602', 'display_name': 'Algebra and Number Theory'}, '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/T11703', 'display_name': 'Study of properties and structures of commutative rings', 'score': 0.9814, 'subfield': {'id': 'https://openalex.org/subfields/2602', 'display_name': 'Algebra and Number Theory'}, '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/T11476', 'display_name': 'Graph Spectra and Topological Indices', 'score': 0.9798, '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/T11151', 'display_name': 'Model Theory and Topological Dynamics', 'score': 0.9705, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/zero-divisor-graphs', 'display_name': 'Zero-Divisor Graphs', 'score': 0.637544}, {'id': 'https://openalex.org/keywords/null', 'display_name': 'Null (SQL)', 'score': 0.58293045}, {'id': 'https://openalex.org/keywords/homogeneous-structures', 'display_name': 'Homogeneous Structures', 'score': 0.526907}], 'concepts': [{'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.8701093}, {'id': 'https://openalex.org/C2780009758', 'wikidata': 'https://www.wikidata.org/wiki/Q6804172', 'display_name': 'Measure (data warehouse)', 'level': 2, 'score': 0.667025}, {'id': 'https://openalex.org/C203763787', 'wikidata': 'https://www.wikidata.org/wiki/Q371029', 'display_name': 'Null (SQL)', 'level': 2, 'score': 0.58293045}, {'id': 'https://openalex.org/C132525143', 'wikidata': 'https://www.wikidata.org/wiki/Q141488', 'display_name': 'Graph', 'level': 2, 'score': 0.50060964}, {'id': 'https://openalex.org/C118615104', 'wikidata': 'https://www.wikidata.org/wiki/Q121416', 'display_name': 'Discrete mathematics', 'level': 1, 'score': 0.4112104}, {'id': 'https://openalex.org/C124101348', 'wikidata': 'https://www.wikidata.org/wiki/Q172491', 'display_name': 'Data mining', 'level': 1, 'score': 0.10742247}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.0843122}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.4064/cm-46-2-181-184', 'pdf_url': 'https://www.impan.pl/shop/publication/transaction/download/product/103662?download.pdf', 'source': {'id': 'https://openalex.org/S111346810', 'display_name': 'Colloquium Mathematicum', 'issn_l': '0010-1354', 'issn': ['0010-1354', '1730-6302'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, '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': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.4064/cm-46-2-181-184', 'pdf_url': 'https://www.impan.pl/shop/publication/transaction/download/product/103662?download.pdf', 'source': {'id': 'https://openalex.org/S111346810', 'display_name': 'Colloquium Mathematicum', 'issn_l': '0010-1354', 'issn': ['0010-1354', '1730-6302'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, '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': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/10', 'score': 0.47, 'display_name': 'Reduced inequalities'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W4245490552', 'https://openalex.org/W4225152035', 'https://openalex.org/W3002753104', 'https://openalex.org/W2911598644', 'https://openalex.org/W2077600819', 'https://openalex.org/W2061531152', 'https://openalex.org/W2042127053', 'https://openalex.org/W2007980826', 'https://openalex.org/W1979597421', 'https://openalex.org/W1587224694'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1205750623', 'counts_by_year': [], 'updated_date': '2024-09-17T10:52:34.578871', 'created_date': '2016-06-24'}