Hans Schwerdtfeger

517 total citations
22 papers, 223 citations indexed

About

Hans Schwerdtfeger is a scholar working on Geometry and Topology, Computational Theory and Mathematics and Astronomy and Astrophysics. According to data from OpenAlex, Hans Schwerdtfeger has authored 22 papers receiving a total of 223 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Geometry and Topology, 5 papers in Computational Theory and Mathematics and 2 papers in Astronomy and Astrophysics. Recurrent topics in Hans Schwerdtfeger's work include Mathematics and Applications (6 papers), Matrix Theory and Algorithms (4 papers) and Commutative Algebra and Its Applications (2 papers). Hans Schwerdtfeger is often cited by papers focused on Mathematics and Applications (6 papers), Matrix Theory and Algorithms (4 papers) and Commutative Algebra and Its Applications (2 papers). Hans Schwerdtfeger collaborates with scholars based in Canada. Hans Schwerdtfeger's co-authors include Howard Eves, U. Bastian, S. Röser, Walter Fricke, H. Jahreiß, H. Schwan and Azriel Rosenfeld and has published in prestigious journals such as American Mathematical Monthly, Linear Algebra and its Applications and Canadian Journal of Mathematics.

In The Last Decade

Hans Schwerdtfeger

19 papers receiving 206 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hans Schwerdtfeger Canada 7 78 43 40 38 25 22 223
W. L. Edge United Kingdom 11 187 2.4× 25 0.6× 15 0.4× 64 1.7× 47 1.9× 57 405
Evelyn Frank United States 6 65 0.8× 23 0.5× 135 3.4× 65 1.7× 29 1.2× 27 346
Ralph Alexander United States 12 109 1.4× 29 0.7× 157 3.9× 58 1.5× 22 0.9× 29 392
Bernard Gostiaux France 3 63 0.8× 56 1.3× 87 2.2× 52 1.4× 8 0.3× 3 308
J. H. Curtiss United States 9 63 0.8× 28 0.7× 143 3.6× 105 2.8× 13 0.5× 22 343
J. W. Neuberger United States 12 31 0.4× 128 3.0× 90 2.3× 151 4.0× 24 1.0× 64 474
Fernando Cukierman Argentina 9 122 1.6× 60 1.4× 19 0.5× 37 1.0× 7 0.3× 18 291
Yung-Chow Wong Hong Kong 11 172 2.2× 56 1.3× 207 5.2× 48 1.3× 22 0.9× 37 405
Chuan-Chih Hsiung United States 9 175 2.2× 40 0.9× 255 6.4× 36 0.9× 3 0.1× 40 378
V. A. Zalgaller Russia 7 246 3.2× 47 1.1× 390 9.8× 98 2.6× 14 0.6× 20 582

Countries citing papers authored by Hans Schwerdtfeger

Since Specialization
Citations

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

Fields of papers citing papers by Hans Schwerdtfeger

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hans Schwerdtfeger

This figure shows the co-authorship network connecting the top 25 collaborators of Hans Schwerdtfeger. A scholar is included among the top collaborators of Hans Schwerdtfeger 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 Hans Schwerdtfeger. Hans Schwerdtfeger 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.
Fricke, Walter, H. Schwan, U. Bastian, et al.. (1988). Fifth Fundamental Catalogue (FK5). Part 1. The Basic Fundamental Stars. 32. 1–106. 23 indexed citations
2.
Schwerdtfeger, Hans. (1983). On the covariance of the Moore-Penrose inverse. Linear Algebra and its Applications. 52-53. 629–643. 5 indexed citations
3.
Schwerdtfeger, Hans. (1979). Geometry of complex numbers : circle geometry, Moebius transformation, non-Euclidean geometry. 23 indexed citations
4.
Schwerdtfeger, Hans. (1976). Introduction to Group Theory. 19 indexed citations
5.
Schwerdtfeger, Hans. (1976). Invariants of a class of transformation groups. Aequationes Mathematicae. 14(1-2). 105–110. 1 indexed citations
6.
Schwerdtfeger, Hans. (1975). On (n+ 1)-point invariants of the groupGL(n,F). Linear and Multilinear Algebra. 3(1-2). 105–109. 1 indexed citations
7.
Schwerdtfeger, Hans. (1969). Involutory functions and even functions. Aequationes Mathematicae. 2(1). 50–61. 3 indexed citations
8.
Schwerdtfeger, Hans, et al.. (1969). Polynomials with Certain Prescribed Conditions on the Galois Group. Canadian Journal of Mathematics. 21. 262–273. 2 indexed citations
9.
Schwerdtfeger, Hans. (1968). Remarks on the generalized inverse of a matrix. Linear Algebra and its Applications. 1(3). 325–328. 5 indexed citations
10.
Schwerdtfeger, Hans. (1964). Projective Geometry in the One-Dimensional Affine Group. Canadian Journal of Mathematics. 16. 683–700.
11.
Schwerdtfeger, Hans. (1962). Geometry of Complex Numbers. University of Toronto Press eBooks. 84 indexed citations
12.
Schwerdtfeger, Hans. (1962). über eine spezielle Klasse Frobeniusscher Gruppen. Archiv der Mathematik. 13(1). 283–289. 6 indexed citations
13.
Eves, Howard & Hans Schwerdtfeger. (1962). Geometry of Complex Numbers.. American Mathematical Monthly. 69(10). 1021–1021. 32 indexed citations
14.
Schwerdtfeger, Hans. (1961). On a property of the moebius group. Annali di Matematica Pura ed Applicata (1923 -). 54(1). 23–31. 4 indexed citations
15.
Schwerdtfeger, Hans. (1961). Notes on Numerical Analysis III. Canadian Mathematical Bulletin. 4(1). 53–55. 1 indexed citations
16.
Schwerdtfeger, Hans, et al.. (1961). Problems for Solution: E1456-E1460. American Mathematical Monthly. 68(3). 294–294. 2 indexed citations
17.
Schwerdtfeger, Hans. (1960). Interpolation and Curve Fitting by Sectionally Linear Functions. Canadian Mathematical Bulletin. 3(1). 41–57. 3 indexed citations
18.
Schwerdtfeger, Hans. (1960). Direct Proof of Lanczos' Decomposition Theorem. American Mathematical Monthly. 67(9). 855–860. 6 indexed citations
19.
Schwerdtfeger, Hans. (1958). Zur Geometrie der Möbius‐Transformation. Mathematische Nachrichten. 18(1-6). 168–172. 1 indexed citations
20.

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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