U. Westphal

952 total citations
17 papers, 194 citations indexed

About

U. Westphal is a scholar working on Mathematical Physics, Applied Mathematics and Geometry and Topology. According to data from OpenAlex, U. Westphal has authored 17 papers receiving a total of 194 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Mathematical Physics, 5 papers in Applied Mathematics and 4 papers in Geometry and Topology. Recurrent topics in U. Westphal's work include Advanced Banach Space Theory (5 papers), Optimization and Variational Analysis (3 papers) and advanced mathematical theories (3 papers). U. Westphal is often cited by papers focused on Advanced Banach Space Theory (5 papers), Optimization and Variational Analysis (3 papers) and advanced mathematical theories (3 papers). U. Westphal collaborates with scholars based in Germany and United States. U. Westphal's co-authors include P. L. Butzer, Hubert Berens and Walter Trebels and has published in prestigious journals such as Cellular and Molecular Life Sciences, Proceedings of the American Mathematical Society and Indiana University Mathematics Journal.

In The Last Decade

U. Westphal

15 papers receiving 149 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
U. Westphal Germany 10 111 101 56 45 32 17 194
Danuta Przeworska‐Rolewicz Poland 8 148 1.3× 106 1.0× 82 1.5× 17 0.4× 71 2.2× 57 277
Juan Arias de Reyna Spain 9 114 1.0× 98 1.0× 49 0.9× 26 0.6× 45 1.4× 35 215
A. V. Bukhvalov Russia 10 204 1.8× 205 2.0× 38 0.7× 70 1.6× 14 0.4× 24 277
Jürgen Bliedtner Germany 7 213 1.9× 183 1.8× 138 2.5× 9 0.2× 76 2.4× 14 346
Simon Fitzpatrick New Zealand 11 311 2.8× 108 1.1× 160 2.9× 65 1.4× 122 3.8× 17 478
Alexandra Bellow United States 9 88 0.8× 129 1.3× 23 0.4× 32 0.7× 35 1.1× 19 200
Ralph Palmer Agnew United States 8 69 0.6× 49 0.5× 40 0.7× 55 1.2× 22 0.7× 30 185
H. F. Bohnenblust 2 81 0.7× 58 0.6× 63 1.1× 15 0.3× 39 1.2× 2 164
B. Kuttner United Kingdom 8 125 1.1× 51 0.5× 27 0.5× 110 2.4× 17 0.5× 56 222
Andrzej Fryszkowski Poland 8 258 2.3× 37 0.4× 178 3.2× 43 1.0× 88 2.8× 23 338

Countries citing papers authored by U. Westphal

Since Specialization
Citations

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

Fields of papers citing papers by U. Westphal

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of U. Westphal

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

All Works

17 of 17 papers shown
1.
Trebels, Walter & U. Westphal. (2008). On Ulyanov inequalities in Banach spaces and semigroups of linear operators. Journal of Approximation Theory. 160(1-2). 154–170. 3 indexed citations
2.
3.
Westphal, U., et al.. (1998). Farthest points and monotone operators. Bulletin of the Australian Mathematical Society. 58(1). 75–92. 9 indexed citations
4.
Westphal, U.. (1992). Contractive projections onl 1. Constructive Approximation. 8(2). 223–231. 2 indexed citations
5.
Westphal, U., et al.. (1989). On a Property of Metric Projections Onto Closed Subsets of Hilbert Spaces. Proceedings of the American Mathematical Society. 105(3). 644–644. 12 indexed citations
6.
Westphal, U., et al.. (1989). On a property of metric projections onto closed subsets of Hilbert spaces. Proceedings of the American Mathematical Society. 105(3). 644–651. 14 indexed citations
7.
Westphal, U.. (1988). Cosuns in l(n), 1 ⩽ p < t8. Journal of Approximation Theory. 54(3). 287–305. 10 indexed citations
8.
Butzer, P. L., et al.. (1975). On the rate of approximation in the central limit theorem. Journal of Approximation Theory. 13(3). 327–340. 30 indexed citations
9.
Westphal, U.. (1975). On approximation by semigroups of nonlinear contractions. II. Journal of Approximation Theory. 15(1). 11–17. 1 indexed citations
10.
Westphal, U.. (1975). On approximation by semigroups of nonlinear contractions, I. Journal of Approximation Theory. 13(3). 205–217. 1 indexed citations
11.
Westphal, U.. (1974). An Approach to Fractional Powers of Operators via Fractional Differences. Proceedings of the London Mathematical Society. s3-29(3). 557–576. 29 indexed citations
12.
Westphal, U., et al.. (1972). Fractional powers of closed operators. Studia Mathematica. 42(2). 177–194. 24 indexed citations
13.
Butzer, P. L. & U. Westphal. (1971). . Indiana University Mathematics Journal. 20(12). 1163–1163. 19 indexed citations
14.
Westphal, U.. (1970). Ein Kalkül für gebrochene Potenzen infinitesimaler Erzeuger von Halbgruppen und Gruppen von Operatoren. Teil I : Halbgruppenerzeuger. Compositio Mathematica. 22(1). 104–136. 19 indexed citations
15.
Berens, Hubert & U. Westphal. (1968). Zur Charakterisierung von Ableitungen nichtganzer Ordnung im Rahmen der LAPLACE‐Transformation. Mathematische Nachrichten. 38(1-2). 115–129. 1 indexed citations
16.
Berens, Hubert, P. L. Butzer, & U. Westphal. (1968). Representation of fractional powers of infinitesimal generators of semigroups. Bulletin of the American Mathematical Society. 74(1). 191–197. 14 indexed citations
17.
Westphal, U., et al.. (1965). Histochemische Untersuchungen zur Natur der Cytoplasma-Einschlüsse des Lungentumors der Maus. Cellular and Molecular Life Sciences. 21(8). 435–436. 1 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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