Birgit Speh

801 total citations
24 papers, 359 citations indexed

About

Birgit Speh is a scholar working on Mathematical Physics, Geometry and Topology and Algebra and Number Theory. According to data from OpenAlex, Birgit Speh has authored 24 papers receiving a total of 359 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Mathematical Physics, 13 papers in Geometry and Topology and 12 papers in Algebra and Number Theory. Recurrent topics in Birgit Speh's work include Advanced Algebra and Geometry (22 papers), Advanced Topics in Algebra (11 papers) and Algebraic structures and combinatorial models (9 papers). Birgit Speh is often cited by papers focused on Advanced Algebra and Geometry (22 papers), Advanced Topics in Algebra (11 papers) and Algebraic structures and combinatorial models (9 papers). Birgit Speh collaborates with scholars based in United States, Germany and Japan. Birgit Speh's co-authors include David A. Vogan, Toshiyuki Kobayashi, Anthony W. Knapp, Bent Ørsted, Hans Plesner Jakobsen, I. E. Segal, Stephen M. Paneitz and Michèle Vergne and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Lecture notes in mathematics and Transactions of the American Mathematical Society.

In The Last Decade

Birgit Speh

23 papers receiving 295 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Birgit Speh United States	9	296	192	135	85	72	24	359
Brian D. Boe United States	11	212 0.7×	258 1.3×	160 1.2×	90 1.1×	42 0.6×	27	316
Peter Slodowy Germany	9	400 1.4×	438 2.3×	161 1.2×	109 1.3×	60 0.8×	16	559
Gérard Schiffmann France	10	333 1.1×	243 1.3×	142 1.1×	133 1.6×	41 0.6×	19	368
Alexei B. Venkov Denmark	7	197 0.7×	99 0.5×	117 0.9×	39 0.5×	57 0.8×	21	269
Paul Norbury Australia	11	191 0.6×	251 1.3×	59 0.4×	75 0.9×	50 0.7×	43	350
Mirko Primc Croatia	10	160 0.5×	401 2.1×	351 2.6×	133 1.6×	59 0.8×	21	486
Sylvie Paycha France	10	152 0.5×	92 0.5×	87 0.6×	25 0.3×	56 0.8×	43	240
Yuri Berest United States	13	287 1.0×	348 1.8×	199 1.5×	60 0.7×	79 1.1×	39	475
Jyoichi Kaneko Japan	6	94 0.3×	117 0.6×	86 0.6×	95 1.1×	62 0.9×	18	258
András Szenes United States	7	118 0.4×	182 0.9×	111 0.8×	68 0.8×	20 0.3×	19	259

Countries citing papers authored by Birgit Speh

Since Specialization

Citations

This map shows the geographic impact of Birgit Speh'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 Birgit Speh with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Birgit Speh more than expected).

Fields of papers citing papers by Birgit Speh

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Birgit Speh. 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 Birgit Speh. The network helps show where Birgit Speh may publish in the future.

Co-authorship network of co-authors of Birgit Speh

This figure shows the co-authorship network connecting the top 25 collaborators of Birgit Speh. A scholar is included among the top collaborators of Birgit Speh 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 Birgit Speh. Birgit Speh is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ørsted, Bent & Birgit Speh. (2021). Branching laws for discrete series of some affine symmetric spaces. Pure and Applied Mathematics Quarterly. 17(4). 1291–1320. 1 indexed citations

Kobayashi, Toshiyuki & Birgit Speh. (2018). Symmetry Breaking for Representations of Rank One Orthogonal Groups II. Lecture notes in mathematics. 16 indexed citations

Speh, Birgit, et al.. (2016). Restriction to symmetric subgroups of unitary representations of rank one semisimple Lie groups. Mathematische Zeitschrift. 283(1-2). 629–647. 1 indexed citations

Kobayashi, Toshiyuki & Birgit Speh. (2014). Intertwining operators and the restriction of representations of rank-one orthogonal groups. Comptes Rendus Mathématique. 352(2). 89–94. 6 indexed citations

Speh, Birgit, et al.. (2010). Discrete components of some complementary series. Forum Mathematicum. 23(6). 8 indexed citations

Speh, Birgit, et al.. (2010). Discrete components of some complementary series representations. Indian Journal of Pure and Applied Mathematics. 41(1). 145–151. 4 indexed citations

Speh, Birgit, et al.. (2005). Construction of Some Generalised Modular Symbols. Pure and Applied Mathematics Quarterly. 1(4). 737–754. 6 indexed citations

Speh, Birgit, et al.. (2001). Pseudo-Eisenstein forms and cohomology¶of arithmetic groups. I. manuscripta mathematica. 106(4). 505–518. 2 indexed citations

Speh, Birgit, et al.. (1993). Lefschetz numbers and twisted stabilized orbital integrals. Mathematische Annalen. 296(1). 191–214. 6 indexed citations

10.

Speh, Birgit, et al.. (1992). On Cuspidal Cohomology of Arithmetic Groups and Cyclic Base Change. Mathematische Nachrichten. 158(1). 99–108. 3 indexed citations

11.

Speh, Birgit, et al.. (1987). Representations with cohomology in the discrete spectrum of subgroups of ${\rm SO}(n,1)({Z})$ and Lefschetz numbers. Annales Scientifiques de l École Normale Supérieure. 20(1). 89–136. 5 indexed citations

12.

Speh, Birgit. (1983). Unitary representations ofGl(n, IR) with non-trivial (g,K)-cohomology. Inventiones mathematicae. 71(3). 443–465. 30 indexed citations

13.

Knapp, Anthony W. & Birgit Speh. (1982). Irreducible unitary representations of SU(2, 2). Journal of Functional Analysis. 45(1). 41–73. 24 indexed citations

14.

Speh, Birgit. (1982). Induced representations and the cohomology of discrete subgroups. Duke Mathematical Journal. 49(4). 2 indexed citations

15.

Speh, Birgit. (1981). Indecomposable representations of semisimple Lie groups. Transactions of the American Mathematical Society. 265(1). 1–1. 2 indexed citations

16.

Segal, I. E., Hans Plesner Jakobsen, Bent Ørsted, Stephen M. Paneitz, & Birgit Speh. (1981). Covariant chronogeometry and extreme distances: Elementary particles. Proceedings of the National Academy of Sciences. 78(9). 5261–5265. 23 indexed citations

17.

Speh, Birgit. (1981). The unitary dual of Gl (3, ?) and Gl (4, ?). Mathematische Annalen. 258(2). 113–133. 30 indexed citations

18.

Speh, Birgit. (1979). Degenerate series representations of the universal covering group of SU(2, 2). Journal of Functional Analysis. 33(1). 95–118. 9 indexed citations

19.

Jakobsen, Hans Plesner, Bent Ørsted, I. E. Segal, Birgit Speh, & Michèle Vergne. (1978). Symmetry and causality properties of physical fields. Proceedings of the National Academy of Sciences. 75(4). 1609–1611. 8 indexed citations

20.

Speh, Birgit & David A. Vogan. (1977). A reducibility criterion for generalized principal series. Proceedings of the National Academy of Sciences. 74(12). 5252–5252. 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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