K.-H. Ulbrich

435 total citations
21 papers, 259 citations indexed

About

K.-H. Ulbrich is a scholar working on Geometry and Topology, Algebra and Number Theory and Mathematical Physics. According to data from OpenAlex, K.-H. Ulbrich has authored 21 papers receiving a total of 259 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Geometry and Topology, 14 papers in Algebra and Number Theory and 5 papers in Mathematical Physics. Recurrent topics in K.-H. Ulbrich's work include Advanced Topics in Algebra (9 papers), Algebraic structures and combinatorial models (9 papers) and Rings, Modules, and Algebras (6 papers). K.-H. Ulbrich is often cited by papers focused on Advanced Topics in Algebra (9 papers), Algebraic structures and combinatorial models (9 papers) and Rings, Modules, and Algebras (6 papers). K.-H. Ulbrich collaborates with scholars based in Germany, Japan and France. K.-H. Ulbrich's co-authors include Mitsuhiro Takeuchi and Margaret Beattie and has published in prestigious journals such as Journal of Algebra, Mathematical Proceedings of the Cambridge Philosophical Society and Canadian Journal of Mathematics.

In The Last Decade

K.-H. Ulbrich

20 papers receiving 213 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
K.-H. Ulbrich Germany 11 223 187 168 28 18 21 259
Hans J. Munkholm Denmark 8 209 0.9× 108 0.6× 218 1.3× 15 0.5× 20 1.1× 29 269
Steve Shnider Israel 5 200 0.9× 188 1.0× 201 1.2× 16 0.6× 12 0.7× 11 246
William Chin United States 10 216 1.0× 221 1.2× 83 0.5× 52 1.9× 17 0.9× 29 245
Richard Steiner United Kingdom 10 184 0.8× 105 0.6× 210 1.3× 8 0.3× 8 0.4× 24 225
Hans-Werner Henn Germany 10 226 1.0× 90 0.5× 235 1.4× 9 0.3× 31 1.7× 23 254
Serge Ovsienko Ukraine 12 232 1.0× 173 0.9× 127 0.8× 64 2.3× 45 2.5× 21 242
Lionel Schwartz France 11 299 1.3× 203 1.1× 330 2.0× 22 0.8× 33 1.8× 30 372
Robert R. Colby United States 11 328 1.5× 393 2.1× 79 0.5× 33 1.2× 17 0.9× 23 434
Toshitsune Miyake Japan 3 176 0.8× 174 0.9× 226 1.3× 8 0.3× 46 2.6× 5 269
Graham Leuschke United States 9 307 1.4× 267 1.4× 71 0.4× 27 1.0× 29 1.6× 20 322

Countries citing papers authored by K.-H. Ulbrich

Since Specialization
Citations

This map shows the geographic impact of K.-H. Ulbrich's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by K.-H. Ulbrich with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K.-H. Ulbrich more than expected).

Fields of papers citing papers by K.-H. Ulbrich

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K.-H. Ulbrich. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by K.-H. Ulbrich. The network helps show where K.-H. Ulbrich may publish in the future.

Co-authorship network of co-authors of K.-H. Ulbrich

This figure shows the co-authorship network connecting the top 25 collaborators of K.-H. Ulbrich. A scholar is included among the top collaborators of K.-H. Ulbrich based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with K.-H. Ulbrich. K.-H. Ulbrich is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ulbrich, K.-H.. (1993). An Exact Sequence for the Brauer Group of Dimodule Azumaya Algebras. Okayama University Scientific Achievement Repository (Okayama University). 35(1). 63–88. 1 indexed citations
2.
Ulbrich, K.-H.. (1991). On Nonabelian H2for Profinite Groups. Canadian Journal of Mathematics. 43(1). 213–224. 1 indexed citations
3.
Ulbrich, K.-H.. (1991). On cocycle bitorsors and gerbes over a Grothendieck topos. Mathematical Proceedings of the Cambridge Philosophical Society. 110(1). 49–55. 2 indexed citations
4.
Ulbrich, K.-H.. (1990). On the correspondence between gerbes and bouquets. Mathematical Proceedings of the Cambridge Philosophical Society. 108(1). 1–5. 3 indexed citations
5.
Ulbrich, K.-H.. (1990). Cubic galois extensions of commutative rings. Communications in Algebra. 18(7). 2275–2279.
6.
Beattie, Margaret & K.-H. Ulbrich. (1990). A skolem-noether theorem for hopf algebra actions. Communications in Algebra. 18(11). 3713–3724. 10 indexed citations
7.
Ulbrich, K.-H.. (1990). On modules induced or coinduced from Hopf subalgebras.. MATHEMATICA SCANDINAVICA. 67. 177–177. 3 indexed citations
8.
Ulbrich, K.-H.. (1990). On hopf algebras and rigid monoidal categories. Israel Journal of Mathematics. 72(1-2). 252–256. 48 indexed citations
9.
Ulbrich, K.-H.. (1990). Smash products and comodules of linear maps. Tsukuba Journal of Mathematics. 14(2). 19 indexed citations
10.
Ulbrich, K.-H.. (1989). On Galois H-Dimodule Algebras. Okayama University Scientific Achievement Repository (Okayama University). 31(1). 79–84. 1 indexed citations
11.
Ulbrich, K.-H.. (1989). On the Teichmüller cocycle map. Journal of Algebra. 124(2). 461–471. 2 indexed citations
12.
Ulbrich, K.-H.. (1989). Fibre functors of finite dimensional comodules. manuscripta mathematica. 65(1). 39–46. 19 indexed citations
13.
Ulbrich, K.-H.. (1987). Galois extensions as functors of comodules. manuscripta mathematica. 59(4). 391–397. 14 indexed citations
14.
Ulbrich, K.-H.. (1984). Kohärenz in Kategorien mit Gruppenstruktur, III. Journal of Algebra. 88(1). 292–316. 3 indexed citations
15.
Ulbrich, K.-H.. (1984). Group cohomology for Picard categories. Journal of Algebra. 91(2). 464–498. 28 indexed citations
16.
Ulbrich, K.-H.. (1983). Kohärenz in Kategorien mit Gruppenstruktur, II. Journal of Algebra. 81(2). 279–294. 14 indexed citations
17.
Ulbrich, K.-H.. (1982). Galoiserweiterungen von night-kommutativen ringen. Communications in Algebra. 10(6). 655–672. 38 indexed citations
18.
Ulbrich, K.-H.. (1981). Kohärenz in Kategorien mit Gruppenstruktur. Journal of Algebra. 72(2). 279–295. 14 indexed citations
19.
Ulbrich, K.-H.. (1981). Vollgraduierte Algebren. Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg. 51(1). 136–148. 23 indexed citations
20.
Ulbrich, K.-H.. (1981). Über nicht-kommutative abelsche galoisalgebren. Communications in Algebra. 9(5). 553–559. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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