Helmut Schaefer
Impact in
- Mathematical Physics top 0.05%
- Advanced Banach Space Theory
- Advanced Operator Algebra Research
- Applied Mathematics top 0.1%
- Holomorphic and Operator Theory
Papers in
-
- Advanced Banach Space Theory 36
- Advanced Operator Algebra Research 7
-
- Approximation Theory and Sequence Spaces 16
- Co-authors
- M. S. Ramanujan (1 shared paper)Manfred P. H. Wolff (4 shared papers)Ulf Schlotterbeck (2 shared papers)Rainer J. Nagel (1 shared paper)Wolfgang Arendt (1 shared paper)Xiao-Dong ZHANG (4 shared papers)Jan Felba (1 shared paper)Werner J. Ricker (1 shared paper)
- Journals
- Mathematische Zeitschrift (13 papers)Mathematische Annalen (10 papers)Israel Journal of Mathematics (3 papers)Proceedings of the American Mathematical Society (3 papers)Pacific Journal of Mathematics (2 papers)
- Partner nations
- GermanyUnited StatesPoland
In The Last Decade
Helmut Schaefer
78 papers receiving 5.4k citations
Helmut Schaefer's Hit Papers
Peers
Comparison fields: 5 of 121
- Mathematical Physics 3.8k
- Applied Mathematics 2.8k
- Algebra and Number Theory 1.1k
- Geometry and Topology 1.5k
- Statistics and Probability 1.1k
Countries citing papers authored by Helmut Schaefer
This map shows the geographic impact of Helmut Schaefer'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 Helmut Schaefer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helmut Schaefer more than expected).
Fields of papers citing papers by Helmut Schaefer
This network shows the impact of papers produced by Helmut Schaefer. 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 Helmut Schaefer. The network helps show where Helmut Schaefer may publish in the future.
Co-authors
The 14 scholars most cited alongside Helmut Schaefer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 85 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Topological Vector Spaces. Hit paper breakdown → | 1967 | 2887 |
| 2 | Banach Lattices and Positive Operators Hit paper breakdown → | 1974 | 1626 |
| 3 | Topological Vector Spaces Hit paper breakdown → | 1971 | 868 |
| 4 | �ber die Methode der a priori-Schranken Hit paper breakdown → | 1955 | 220 |
| 5 | 1971 | 172 | |
| 6 | 1960 | 79 | |
| 7 | Über die Methode sukzessiver Approximationen. | 1957 | 68 |
| 8 | 1959 | 59 | |
| 9 | Aspects of Positivity in Functional Analysis | 1986 | 45 |
| 10 | 1962 | 38 | |
| 11 | 1959 | 37 | |
| 12 | 1977 | 34 | |
| 13 | 1958 | 26 | |
| 14 | 1978 | 25 | |
| 15 | 1972 | 25 | |
| 16 | 1960 | 21 | |
| 17 | 1967 | 19 | |
| 18 | 1972 | 19 | |
| 19 | 1963 | 19 | |
| 20 | 1974 | 19 |
About Helmut Schaefer
Helmut Schaefer is a scholar working on Mathematical Physics, Statistics and Probability, Algebra and Number Theory, Applied Mathematics and Computational Theory and Mathematics, having authored 85 papers that have together received 6.6k indexed citations. Recurring topics across this work include Advanced Banach Space Theory (36 papers), Approximation Theory and Sequence Spaces (16 papers), Advanced Topics in Algebra (12 papers), Holomorphic and Operator Theory (11 papers), Physics and Engineering Research Articles (8 papers), Advanced Operator Algebra Research (7 papers), Optimization and Variational Analysis (7 papers) and Matrix Theory and Algorithms (7 papers). The work is most often cited by research in Mathematical Physics (3.8k citations), Applied Mathematics (2.8k citations), Algebra and Number Theory (1.1k citations), Geometry and Topology (1.5k citations) and Statistics and Probability (1.1k citations). Helmut Schaefer has collaborated with scholars based in Germany, United States and Poland. Frequent co-authors include M. S. Ramanujan, Manfred P. H. Wolff, Ulf Schlotterbeck, Rainer J. Nagel, Wolfgang Arendt, Xiao-Dong ZHANG, Jan Felba, Werner J. Ricker, Xiao Dong Zhang and Manfred Rudolph. Their work appears in journals such as Mathematische Zeitschrift, Mathematische Annalen, Israel Journal of Mathematics, Proceedings of the American Mathematical Society and Pacific Journal of Mathematics.
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.