{"id":"https://openalex.org/A5158917906","orcid":null,"observed_orcids":[],"display_name":"Julian Holstein","raw_author_names":["Holstein, Julian","Julian Holstein"],"full_name":"Julian Holstein","works_count":1,"cited_by_count":0,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":0,"i10_index":0},"ids":{"openalex":"https://openalex.org/A5158917906","orcid":null,"observed_orcids":[]},"affiliations":[],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10061","display_name":"Algebraic Geometry and Number Theory","count":1,"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/T10287","display_name":"Algebraic structures and combinatorial models","count":1,"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/T10896","display_name":"Homotopy and Cohomology in Algebraic Topology","count":1,"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"}}],"topic_share":[{"id":"https://openalex.org/T10896","display_name":"Homotopy and Cohomology in Algebraic Topology","value":6.4e-06,"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/T10287","display_name":"Algebraic structures and combinatorial models","value":5.1e-06,"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/T10061","display_name":"Algebraic Geometry and Number Theory","value":2.6e-06,"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"}}],"x_concepts":[{"id":"109593458","wikidata":"https://www.wikidata.org/wiki/Q5262626","display_name":"Derived category","score":0.5383999943733215},{"id":"128520899","wikidata":"https://www.wikidata.org/wiki/Q1575634","display_name":"Concrete category","score":0.4260999858379364},{"id":"13336665","wikidata":"https://www.wikidata.org/wiki/Q125977","display_name":"Vector space","score":0.30790001153945923},{"id":"135661100","wikidata":"https://www.wikidata.org/wiki/Q1049064","display_name":"Symplectomorphism","score":0.26899999380111694},{"id":"104586451","wikidata":"https://www.wikidata.org/wiki/Q771008","display_name":"Symplectic representation","score":0.26750001311302185}],"counts_by_year":[{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":0}],"display_name_alternatives":["Holstein, Julian","Julian Holstein"],"block_key":"j holstein","works_api_url":"https://api.openalex.org/works?filter=author.id:A5158917906","awards_count":0,"updated_date":"2026-10-17T12:28:47","created_date":"2026-10-17T00:00:00"}