Hermann Hähl

571 total citations
27 papers, 426 citations indexed

About

Hermann Hähl is a scholar working on Discrete Mathematics and Combinatorics, Geometry and Topology and Mathematical Physics. According to data from OpenAlex, Hermann Hähl has authored 27 papers receiving a total of 426 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Discrete Mathematics and Combinatorics, 10 papers in Geometry and Topology and 7 papers in Mathematical Physics. Recurrent topics in Hermann Hähl's work include Finite Group Theory Research (10 papers), Mathematics and Applications (7 papers) and graph theory and CDMA systems (7 papers). Hermann Hähl is often cited by papers focused on Finite Group Theory Research (10 papers), Mathematics and Applications (7 papers) and graph theory and CDMA systems (7 papers). Hermann Hähl collaborates with scholars based in Germany. Hermann Hähl's co-authors include Helmut Salzmann, Markus Stroppel, Dieter Betten, Theo Grundhöfer, Rainer Löwen, L. C. Siebenmann and R. Löwen and has published in prestigious journals such as Journal of Differential Geometry, Annales Scientifiques de l École Normale Supérieure and Geometriae Dedicata.

In The Last Decade

Hermann Hähl

22 papers receiving 372 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hermann Hähl Germany	10	222	206	158	139	103	27	426
Α. I. Kostrikin Russia	9	285 1.3×	157 0.8×	266 1.7×	165 1.2×	40 0.4×	24	488
Markus Stroppel Germany	11	391 1.8×	322 1.6×	218 1.4×	244 1.8×	121 1.2×	78	639
Theo Grundhöfer Germany	8	161 0.7×	158 0.8×	83 0.5×	108 0.8×	68 0.7×	28	295
Gerald Janusz United States	8	225 1.0×	132 0.6×	163 1.0×	133 1.0×	44 0.4×	16	396
Jean‐Marc Deshouillers France	12	222 1.0×	168 0.8×	414 2.6×	238 1.7×	24 0.2×	67	576
R. W. K. Odoni United Kingdom	11	197 0.9×	86 0.4×	169 1.1×	118 0.8×	25 0.2×	57	356
Mark Ronan United States	12	289 1.3×	329 1.6×	104 0.7×	195 1.4×	120 1.2×	28	488
Jean-Louis Nicolas France	12	125 0.6×	172 0.8×	303 1.9×	90 0.6×	25 0.2×	50	411
E M Matveev Russia	7	271 1.2×	181 0.9×	369 2.3×	145 1.0×	15 0.1×	11	550
Christopher Pinner United States	11	110 0.5×	92 0.4×	151 1.0×	87 0.6×	26 0.3×	38	306

Countries citing papers authored by Hermann Hähl

Since Specialization

Citations

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

Fields of papers citing papers by Hermann Hähl

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hermann Hähl

This figure shows the co-authorship network connecting the top 25 collaborators of Hermann Hähl. A scholar is included among the top collaborators of Hermann Hähl 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 Hermann Hähl. Hermann Hähl 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

Hähl, Hermann, et al.. (2024). An axiom system for absolute plane geometry in terms of collinearity and congruence. Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry. 66(3). 575–626.

Hähl, Hermann, et al.. (2020). Sixteen-dimensional locally compact planes of Lenz-type V on which $${\mathrm{SU}}_2 {\mathbb {H}}$$ acts as a group of collineations. Journal of Geometry. 111(3).

Hähl, Hermann. (2011). Sixteen-dimensional locally compact translation planes with collineation groups of dimension at least 38. Advances in Geometry. 11(2). 371–380. 1 indexed citations

Salzmann, Helmut, et al.. (2007). The classical fields : structural features of the real and rational numbers. CERN Document Server (European Organization for Nuclear Research). 9 indexed citations

Hähl, Hermann. (2000). Sixteen-Dimensional Locally Compact Translation Planes with Large Automorphism Groups having no Fixed Points. Geometriae Dedicata. 83(1-3). 105–117. 3 indexed citations

Hähl, Hermann. (2000). Sixteen-dimensional locally compact translation planes admitting SU4ℂ · SU2ℂ or SU4ℂ · SL2ℝ as a group of collineations. Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg. 70(1). 137–163. 3 indexed citations

Salzmann, Helmut, Dieter Betten, Theo Grundhöfer, et al.. (1995). Compact Projective Planes. 160 indexed citations

Salzmann, Helmut, et al.. (1995). Compact Projective Planes. 96 indexed citations

Hähl, Hermann. (1988). Die Oktavenebene als Translationsebene mit großer Kollineationsgruppe. Monatshefte für Mathematik. 106(4). 265–299. 6 indexed citations

10.

Hähl, Hermann. (1987). Eine kennzeichnung der oktavenebene. Indagationes Mathematicae (Proceedings). 90(1). 29–39. 7 indexed citations

11.

Hähl, Hermann. (1987). SU4(C) als Kollineationsgruppe in sechzehndimensionalen lokalkompakten Translationsebenen. OPUS Publication Server of the University of Stuttgart (University of Stuttgart). 1 indexed citations

12.

Hähl, Hermann. (1987). Sechzehndimensionale lokalkompakte Translationsebenen mit Spin(7) als Kollineationsgruppe. Archiv der Mathematik. 48(3). 267–276. 14 indexed citations

13.

Hähl, Hermann. (1983). Zur Kollineationsgruppe von achtdimensionalen lokalkompakten Translationsebenen. Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg. 53(1). 84–102. 6 indexed citations

14.

Hähl, Hermann. (1982). Kriterien für lokalkompakte topologische Quasikörper. Archiv der Mathematik. 38(1). 273–279. 9 indexed citations

15.

Hähl, Hermann. (1982). Achtdimensionale lokalkompakte Translationsebenen mit zu SL2(C) isomorphen Kollineationsgruppen. OPUS Publication Server of the University of Stuttgart (University of Stuttgart). 5 indexed citations

16.

Hähl, Hermann. (1981). Homologies and elations in compact, connected projective planes. Topology and its Applications. 12(1). 49–63. 21 indexed citations

17.

Hähl, Hermann. (1979). Lokalkompakte zusammenhängende Translationsebenen mit groβen Sphärenbahnen auf der Translationsachse. Results in Mathematics. 2(1-2). 62–87. 19 indexed citations

18.

Hähl, Hermann, et al.. (1978). The transposition of locally compact, connected translation planes. Journal of Geometry. 11(1). 84–92. 12 indexed citations

19.

Siebenmann, L. C., et al.. (1974). Les voisinages ouverts réguliers : critères homotopiques d'existence. Annales Scientifiques de l École Normale Supérieure. 7(3). 431–461. 9 indexed citations

20.

Siebenmann, L. C., et al.. (1973). Les voisinages ouverts réguliers. Annales Scientifiques de l École Normale Supérieure. 6(2). 253–293. 10 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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