Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2089929186', 'doi': 'https://doi.org/10.1007/s10711-006-9056-1', 'title': 'Problems on Bieberbach Groups and Flat Manifolds', 'display_name': 'Problems on Bieberbach Groups and Flat Manifolds', 'publication_year': 2006, 'publication_date': '2006-06-01', 'ids': {'openalex': 'https://openalex.org/W2089929186', 'doi': 'https://doi.org/10.1007/s10711-006-9056-1', 'mag': '2089929186'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/s10711-006-9056-1', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S201224749', 'display_name': 'Geometriae Dedicata', 'issn_l': '0046-5755', 'issn': ['0046-5755', '1572-9168'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://arxiv.org/pdf/math/0507355', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5039958215', 'display_name': 'Andrzej Szczepański', 'orcid': 'https://orcid.org/0000-0002-7927-261X'}, 'institutions': [{'id': 'https://openalex.org/I40413290', 'display_name': 'University of Gdańsk', 'ror': 'https://ror.org/011dv8m48', 'country_code': 'PL', 'type': 'education', 'lineage': ['https://openalex.org/I40413290']}], 'countries': ['PL'], 'is_corresponding': True, 'raw_author_name': 'Andrzej Szczepański', 'raw_affiliation_strings': ['Univ. of Gdańsk'], 'affiliations': [{'raw_affiliation_string': 'Univ. of Gdańsk', 'institution_ids': ['https://openalex.org/I40413290']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5039958215'], 'corresponding_institution_ids': ['https://openalex.org/I40413290'], 'apc_list': {'value': 2190, 'currency': 'EUR', 'value_usd': 2780, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.289, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 10, 'citation_normalized_percentile': {'value': 0.738026, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 82, 'max': 83}, 'biblio': {'volume': '120', 'issue': '1', 'first_page': '111', 'last_page': '118'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10304', 'display_name': 'Geometric and Algebraic Topology', 'score': 1.0, '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/T10304', 'display_name': 'Geometric and Algebraic Topology', 'score': 1.0, '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': 0.9992, '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/T10896', 'display_name': 'Homotopy and Cohomology in Algebraic Topology', 'score': 0.9989, '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/representation', 'display_name': 'Representation', 'score': 0.42474285}], 'concepts': [{'id': 'https://openalex.org/C206352148', 'wikidata': 'https://www.wikidata.org/wiki/Q209306', 'display_name': 'Hyperbolic geometry', 'level': 3, 'score': 0.9275679}, {'id': 'https://openalex.org/C185362025', 'wikidata': 'https://www.wikidata.org/wiki/Q177409', 'display_name': 'Projective geometry', 'level': 3, 'score': 0.8262789}, {'id': 'https://openalex.org/C68363185', 'wikidata': 'https://www.wikidata.org/wiki/Q180969', 'display_name': 'Algebraic geometry', 'level': 2, 'score': 0.80155945}, {'id': 'https://openalex.org/C192939610', 'wikidata': 'https://www.wikidata.org/wiki/Q188444', 'display_name': 'Differential geometry', 'level': 2, 'score': 0.7733588}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.76400673}, {'id': 'https://openalex.org/C202444582', 'wikidata': 'https://www.wikidata.org/wiki/Q837863', 'display_name': 'Pure mathematics', 'level': 1, 'score': 0.53462106}, {'id': 'https://openalex.org/C40020168', 'wikidata': 'https://www.wikidata.org/wiki/Q7310818', 'display_name': 'Relatively hyperbolic group', 'level': 4, 'score': 0.43591183}, {'id': 'https://openalex.org/C2776359362', 'wikidata': 'https://www.wikidata.org/wiki/Q2145286', 'display_name': 'Representation (politics)', 'level': 3, 'score': 0.42474285}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.41110325}, {'id': 'https://openalex.org/C136119220', 'wikidata': 'https://www.wikidata.org/wiki/Q1000660', 'display_name': 'Algebra over a field', 'level': 2, 'score': 0.40791857}, {'id': 'https://openalex.org/C70984080', 'wikidata': 'https://www.wikidata.org/wiki/Q2619102', 'display_name': 'Hyperbolic manifold', 'level': 3, 'score': 0.40076405}, {'id': 'https://openalex.org/C94625758', 'wikidata': 'https://www.wikidata.org/wiki/Q7163', 'display_name': 'Politics', 'level': 2, 'score': 0.0}, {'id': 'https://openalex.org/C17744445', 'wikidata': 'https://www.wikidata.org/wiki/Q36442', 'display_name': 'Political science', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C199539241', 'wikidata': 'https://www.wikidata.org/wiki/Q7748', 'display_name': 'Law', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C92047909', 'wikidata': 'https://www.wikidata.org/wiki/Q204034', 'display_name': 'Hyperbolic function', 'level': 2, 'score': 0.0}], 'mesh': [], 'locations_count': 3, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/s10711-006-9056-1', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S201224749', 'display_name': 'Geometriae Dedicata', 'issn_l': '0046-5755', 'issn': ['0046-5755', '1572-9168'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://arxiv.org/abs/math/0507355', 'pdf_url': 'https://arxiv.org/pdf/math/0507355', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': None, 'pdf_url': 'https://arxiv.org/pdf/math/0507355v3.pdf', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://arxiv.org/abs/math/0507355', 'pdf_url': 'https://arxiv.org/pdf/math/0507355', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 31, 'referenced_works': ['https://openalex.org/W1491212993', 'https://openalex.org/W1562271497', 'https://openalex.org/W1573443250', 'https://openalex.org/W1965149641', 'https://openalex.org/W1975633723', 'https://openalex.org/W1975911577', 'https://openalex.org/W1981769479', 'https://openalex.org/W1987555534', 'https://openalex.org/W1991697069', 'https://openalex.org/W2003379302', 'https://openalex.org/W2017894264', 'https://openalex.org/W2032388815', 'https://openalex.org/W2043957164', 'https://openalex.org/W2044720368', 'https://openalex.org/W2050732986', 'https://openalex.org/W2059847793', 'https://openalex.org/W2068687592', 'https://openalex.org/W2083260545', 'https://openalex.org/W2087354179', 'https://openalex.org/W2088873364', 'https://openalex.org/W2093840890', 'https://openalex.org/W2100978647', 'https://openalex.org/W2125732309', 'https://openalex.org/W2137986176', 'https://openalex.org/W2143092687', 'https://openalex.org/W2152433933', 'https://openalex.org/W2230266090', 'https://openalex.org/W3099738675', 'https://openalex.org/W3104829754', 'https://openalex.org/W4232240302', 'https://openalex.org/W4244702029'], 'related_works': ['https://openalex.org/W3103803048', 'https://openalex.org/W2963477220', 'https://openalex.org/W2887166225', 'https://openalex.org/W2154601863', 'https://openalex.org/W2073400439', 'https://openalex.org/W2061153603', 'https://openalex.org/W2038307298', 'https://openalex.org/W1999943539', 'https://openalex.org/W1981744557', 'https://openalex.org/W17630967'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2089929186', 'counts_by_year': [{'year': 2019, 'cited_by_count': 1}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 1}, {'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-12-09T09:47:35.199055', 'created_date': '2016-06-24'}