Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2623757912', 'doi': None, 'title': 'On the nilpotent rank of partial transformation semigroups.', 'display_name': 'On the nilpotent rank of partial transformation semigroups.', 'publication_year': 1994, 'publication_date': '1994-01-01', 'ids': {'openalex': 'https://openalex.org/W2623757912', 'mag': '2623757912'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://eudml.org/doc/47090', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S160572370', 'display_name': 'Portugaliae Mathematica', 'issn_l': '0032-5155', 'issn': ['0032-5155', '1662-2758'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310316982', 'host_organization_name': 'European Mathematical Society', 'host_organization_lineage': ['https://openalex.org/P4310316982'], 'host_organization_lineage_names': ['European Mathematical Society'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': [], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5049984628', 'display_name': 'G. U. Garba', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'G.U. Garba', 'raw_affiliation_strings': [], 'affiliations': []}], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5049984628'], 'corresponding_institution_ids': [], 'apc_list': {'value': 0, 'currency': 'USD', 'value_usd': 0, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.521, 'has_fulltext': False, 'cited_by_count': 8, 'citation_normalized_percentile': {'value': 0.434788, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 75, 'max': 77}, 'biblio': {'volume': '51', 'issue': '2', 'first_page': '163', 'last_page': '172'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11567', 'display_name': 'Automata Theory and Formal Languages', 'score': 0.9988, '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': 'Automata Theory and Formal Languages', 'score': 0.9988, '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/T11671', 'display_name': 'Application of Soft Set Theory in Decision Making', 'score': 0.9833, 'subfield': {'id': 'https://openalex.org/subfields/1803', 'display_name': 'Management Science and Operations Research'}, 'field': {'id': 'https://openalex.org/fields/18', 'display_name': 'Decision Sciences'}, 'domain': {'id': 'https://openalex.org/domains/2', 'display_name': 'Social Sciences'}}, {'id': 'https://openalex.org/T12288', 'display_name': 'Distributed Coordination in Online Robotics Research', 'score': 0.9776, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, '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/semigroups', 'display_name': 'Semigroups', 'score': 0.680641}, {'id': 'https://openalex.org/keywords/rank', 'display_name': 'Rank (graph theory)', 'score': 0.66892505}, {'id': 'https://openalex.org/keywords/semirings', 'display_name': 'Semirings', 'score': 0.52548}, {'id': 'https://openalex.org/keywords/interval-valued-fuzzy-sets', 'display_name': 'Interval-Valued Fuzzy Sets', 'score': 0.501254}], 'concepts': [{'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.91390646}, {'id': 'https://openalex.org/C50555996', 'wikidata': 'https://www.wikidata.org/wiki/Q840023', 'display_name': 'Nilpotent', 'level': 2, 'score': 0.8623461}, {'id': 'https://openalex.org/C164226766', 'wikidata': 'https://www.wikidata.org/wiki/Q7293202', 'display_name': 'Rank (graph theory)', 'level': 2, 'score': 0.66892505}, {'id': 'https://openalex.org/C204241405', 'wikidata': 'https://www.wikidata.org/wiki/Q461499', 'display_name': 'Transformation (genetics)', 'level': 3, 'score': 0.5974806}, {'id': 'https://openalex.org/C202444582', 'wikidata': 'https://www.wikidata.org/wiki/Q837863', 'display_name': 'Pure mathematics', 'level': 1, 'score': 0.5138021}, {'id': 'https://openalex.org/C136119220', 'wikidata': 'https://www.wikidata.org/wiki/Q1000660', 'display_name': 'Algebra over a field', 'level': 2, 'score': 0.38235426}, {'id': 'https://openalex.org/C114614502', 'wikidata': 'https://www.wikidata.org/wiki/Q76592', 'display_name': 'Combinatorics', 'level': 1, 'score': 0.24461266}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.046550006}, {'id': 'https://openalex.org/C55493867', 'wikidata': 'https://www.wikidata.org/wiki/Q7094', 'display_name': 'Biochemistry', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C104317684', 'wikidata': 'https://www.wikidata.org/wiki/Q7187', 'display_name': 'Gene', 'level': 2, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://eudml.org/doc/47090', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S160572370', 'display_name': 'Portugaliae Mathematica', 'issn_l': '0032-5155', 'issn': ['0032-5155', '1662-2758'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310316982', 'host_organization_name': 'European Mathematical Society', 'host_organization_lineage': ['https://openalex.org/P4310316982'], 'host_organization_lineage_names': ['European Mathematical Society'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/10', 'score': 0.49, 'display_name': 'Reduced inequalities'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 1, 'referenced_works': ['https://openalex.org/W2052414950'], 'related_works': ['https://openalex.org/W3099930738', 'https://openalex.org/W2374135269', 'https://openalex.org/W2163959461', 'https://openalex.org/W2158417171', 'https://openalex.org/W2151324803', 'https://openalex.org/W2122684399', 'https://openalex.org/W2095116104', 'https://openalex.org/W2091887712', 'https://openalex.org/W2079876213', 'https://openalex.org/W2057964079', 'https://openalex.org/W2038134510', 'https://openalex.org/W2034937685', 'https://openalex.org/W2016092107', 'https://openalex.org/W2015623773', 'https://openalex.org/W2015343295', 'https://openalex.org/W2012447701', 'https://openalex.org/W1972056806', 'https://openalex.org/W1845227577', 'https://openalex.org/W1515683393', 'https://openalex.org/W1502558332'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2623757912', 'counts_by_year': [{'year': 2016, 'cited_by_count': 1}, {'year': 2014, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 1}], 'updated_date': '2024-09-09T12:17:52.577748', 'created_date': '2017-06-15'}