{"id":"https://openalex.org/A5016739007","orcid":null,"observed_orcids":[],"display_name":"O.\u2010H. Keller","raw_author_names":["O.\u2010H. Keller"],"full_name":"O.\u2010H. Keller","works_count":29,"cited_by_count":214,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":8,"i10_index":6},"ids":{"openalex":"https://openalex.org/A5016739007","orcid":null,"observed_orcids":[]},"affiliations":[],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T12504","display_name":"Mathematics and Applications","count":22,"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/T13080","display_name":"Advanced Differential Geometry Research","count":18,"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/T12170","display_name":"History and Theory of Mathematics","count":7,"subfield":{"id":"https://openalex.org/subfields/1207","display_name":"History and Philosophy of Science"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10948","display_name":"Advanced Combinatorial Mathematics","count":5,"subfield":{"id":"https://openalex.org/subfields/2607","display_name":"Discrete Mathematics and Combinatorics"},"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/T10061","display_name":"Algebraic Geometry and Number Theory","count":4,"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"}}],"topic_share":[{"id":"https://openalex.org/T13080","display_name":"Advanced Differential Geometry Research","value":7.54e-05,"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/T12504","display_name":"Mathematics and Applications","value":6.6e-05,"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/T12176","display_name":"Optimization and Packing Problems","value":3.59e-05,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13267","display_name":"Advanced Theoretical and Applied Studies in Material Sciences and Geometry","value":2.84e-05,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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/T11830","display_name":"Point processes and geometric inequalities","value":2.2e-05,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.5667464733123779},{"id":"138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","score":0.5229783058166504},{"id":"15708023","wikidata":"https://www.wikidata.org/wiki/Q80083","display_name":"Humanities","score":0.4883536994457245},{"id":"161191863","wikidata":"https://www.wikidata.org/wiki/Q199655","display_name":"Library science","score":0.4437023401260376},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.4397062361240387}],"counts_by_year":[{"year":1956,"works_count":6,"oa_works_count":0,"cited_by_count":0},{"year":1959,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1960,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1961,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1962,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1963,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1964,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1965,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1966,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1967,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1969,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":2}],"display_name_alternatives":["O.\u2010H. Keller"],"block_key":"o keller","works_api_url":"https://api.openalex.org/works?filter=author.id:A5016739007","updated_date":"2026-11-03T12:34:24","created_date":"2016-06-24T00:00:00"}