Helmut Schaefer
- Mathematical Physics top 0.05%
- Advanced Banach Space Theory 30
- Advanced Operator Algebra Research 6
- Applied Mathematics top 0.1%
- Holomorphic and Operator Theory 9
- Algebra and Number Theory top 0.5%
- Advanced Topics in Algebra 11
- Geometry and Topology top 0.2%
- Statistics and Probability top 0.5%
- Approximation Theory and Sequence Spaces 13
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- Physics and Engineering Research Articles 7
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- Matrix Theory and Algorithms 7
- Optimization and Variational Analysis 5
- Co-authors
- M. S. RamanujanManfred WolffUlf SchlotterbeckRainer NagelWolfgang ArendtXiao Dong ZhangWerner J. RickerManfred Rudolph
- Journals
- Mathematische Zeitschrift (12 papers)Mathematische Annalen (10 papers)Israel Journal of Mathematics (3 papers)
- Partner nations
- GermanyUnited StatesPoland
In The Last Decade
Helmut Schaefer
68 papers receiving 4.6k citations
Hit Papers
Peers
Comparison fields: 5 of 121
- Mathematical Physics 3.3k
- Applied Mathematics 2.4k
- Algebra and Number Theory 949
- Geometry and Topology 1.3k
- Statistics and Probability 960
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-authorship network
The 13 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
| # | Work | ||
|---|---|---|---|
| 1 | 2011 | 1 | |
| 2 | 1997 | 1 | |
| 3 | 1994 | 4 | |
| 4 | 1992 | 1 | |
| 5 | 1992 | 1 | |
| 6 | 1989 | 2 | |
| 7 | Aspects of Positivity in Functional Analysis | 1986 | 38 |
| 8 | 1982 | 1 | |
| 9 | 1975 | 1 | |
| 10 | 1971 | 0 | |
| 11 | 1970 | 5 | |
| 12 | 1968 | 13 | |
| 13 | Topological Vector Spaces.breakdown → | 1967 | 2615 |
| 14 | 1963 | 16 | |
| 15 | 1959 | 36 | |
| 16 | 1959 | 0 | |
| 17 | 1958 | 25 | |
| 18 | Über die Methode sukzessiver Approximationen. | 1957 | 65 |
| 19 | �ber die Methode der a priori-Schrankenbreakdown → | 1955 | 206 |
| 20 | 1955 | 6 |
About Helmut Schaefer
Helmut Schaefer is a scholar working on Mathematical Physics, Algebra and Number Theory, Statistics and Probability, Applied Mathematics and Computational Theory and Mathematics, having authored 72 papers that have together received 5.7k indexed citations. Recurring topics across this work include Advanced Banach Space Theory (30 papers), Approximation Theory and Sequence Spaces (13 papers), Advanced Topics in Algebra (11 papers), Holomorphic and Operator Theory (9 papers), Physics and Engineering Research Articles (7 papers), Matrix Theory and Algorithms (7 papers), Advanced Operator Algebra Research (6 papers) and Optimization and Variational Analysis (5 papers). The work is most often cited by research in Mathematical Physics (3.3k citations), Applied Mathematics (2.4k citations), Algebra and Number Theory (949 citations), Geometry and Topology (1.3k citations) and Statistics and Probability (960 citations). Helmut Schaefer has collaborated with scholars based in Germany, United States and Poland. Frequent co-authors include M. S. Ramanujan, Manfred Wolff, Ulf Schlotterbeck, Rainer Nagel, Wolfgang Arendt, Xiao Dong Zhang, Werner J. Ricker, Manfred Rudolph, Dieter Bergner and Xiao‐Dong Zhang. Their work appears in journals such as Mathematische Zeitschrift, Mathematische Annalen, Israel Journal of Mathematics, Proceedings of the American Mathematical Society and Illinois 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.