László Kérchy

3.0k total citations · 2 hit papers
25 papers, 1.7k citations indexed

About

László Kérchy is a scholar working on Applied Mathematics, Mathematical Physics and Geometry and Topology. According to data from OpenAlex, László Kérchy has authored 25 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Applied Mathematics, 14 papers in Mathematical Physics and 8 papers in Geometry and Topology. Recurrent topics in László Kérchy's work include Holomorphic and Operator Theory (16 papers), Spectral Theory in Mathematical Physics (11 papers) and Advanced Topics in Algebra (6 papers). László Kérchy is often cited by papers focused on Holomorphic and Operator Theory (16 papers), Spectral Theory in Mathematical Physics (11 papers) and Advanced Topics in Algebra (6 papers). László Kérchy collaborates with scholars based in Hungary, United States and France. László Kérchy's co-authors include Hari Bercovici, Ciprian Foiaş, Béla Szõkefalvi-Nagy, Béla Nagy and Вилмос Тотик and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Journal of Functional Analysis and Pacific Journal of Mathematics.

In The Last Decade

László Kérchy

21 papers receiving 1.4k citations

Hit Papers

Harmonic Analysis of Operators on Hilbert Space 1970 2026 1988 2007 1970 2010 400 800 1.2k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Harmonic Analysis of Operators on Hilbert Space
    1970 1.4k citations Hari Bercovici, László Kérchy et al. profile →
  2. Harmonic Analysis of Operators on Hilbert Space
    2010 263 citations Hari Bercovici, László Kérchy et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
László Kérchy Hungary 8 1.2k 1.0k 429 414 201 25 1.7k
Daniel Alpay Israel 22 1.8k 1.5× 776 0.7× 328 0.8× 584 1.4× 102 0.5× 270 2.4k
Garrett Johnson United States 3 1.1k 0.9× 710 0.7× 372 0.9× 248 0.6× 155 0.8× 5 1.7k
Peter Rosenthal Canada 18 829 0.7× 686 0.7× 672 1.6× 513 1.2× 67 0.3× 110 1.6k
James Rovnyak United States 14 835 0.7× 514 0.5× 144 0.3× 347 0.8× 144 0.7× 62 1.3k
Béla Szõkefalvi-Nagy Hungary 13 1.3k 1.1× 1.1k 1.1× 406 0.9× 567 1.4× 241 1.2× 19 2.1k
Marvin Rosenblum United States 18 865 0.7× 677 0.6× 276 0.6× 514 1.2× 140 0.7× 44 1.4k
L. Boutet de Monvel France 17 938 0.8× 919 0.9× 172 0.4× 307 0.7× 101 0.5× 44 1.5k
Hari Bercovici United States 19 1.8k 1.5× 1.9k 1.8× 723 1.7× 543 1.3× 226 1.1× 114 3.1k
G. Lumer Belgium 13 575 0.5× 617 0.6× 272 0.6× 450 1.1× 119 0.6× 40 1.1k
R. G. Douglas United States 20 1.5k 1.2× 1.2k 1.1× 755 1.8× 503 1.2× 68 0.3× 51 2.1k

Countries citing papers authored by László Kérchy

Since Specialization
Citations

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

Fields of papers citing papers by László Kérchy

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of László Kérchy

This figure shows the co-authorship network connecting the top 25 collaborators of László Kérchy. A scholar is included among the top collaborators of László Kérchy 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 László Kérchy. László Kérchy 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.
Kérchy, László. (2020). Pluquasisimilar Hilbert space operators. Acta Scientiarum Mathematicarum. 86(3-4). 503–520.
2.
Kérchy, László. (2020). Numerical ranges of model operators and Clark measures. Journal of Mathematical Analysis and Applications. 491(1). 124281–124281.
3.
Kérchy, László. (2018). Quasianalytic n-tuples of Hilbert space operators. Journal of Operator Theory. 81(1). 3–20. 3 indexed citations
4.
Kérchy, László. (2017). Uniqueness of the numerical range of truncated shifts. Acta Scientiarum Mathematicarum. 83(1-2). 243–261. 1 indexed citations
5.
Kérchy, László, et al.. (2015). Spectral behaviour of quasianalytic contractions. Proceedings of the American Mathematical Society. 143(6). 2579–2584. 4 indexed citations
6.
Kérchy, László, et al.. (2014). Asymptotically cyclic quasianalytic contractions. Studia Mathematica. 223(1). 53–75. 5 indexed citations
7.
Kérchy, László & Вилмос Тотик. (2012). Compression of quasianalytic spectral sets of cyclic contractions. Journal of Functional Analysis. 263(9). 2754–2769. 8 indexed citations
8.
Kérchy, László. (2011). Quasianalytic contractions and function algebras. Indiana University Mathematics Journal. 60(1). 21–40. 7 indexed citations
9.
Kérchy, László, et al.. (2011). On the commutant of asymptotically non-vanishing contractions. Periodica Mathematica Hungarica. 63(2). 191–203. 3 indexed citations
10.
Kérchy, László. (2007). Shift-type invariant subspaces of contractions. Journal of Functional Analysis. 246(2). 281–301. 10 indexed citations
11.
Kérchy, László, et al.. (2007). Representations with regular norm-behaviour of locally compact abelian semigroups. Studia Mathematica. 183(2). 143–160. 3 indexed citations
12.
Kérchy, László. (2000). Isometries with Isomorphic Invariant Subspace Lattices. Journal of Functional Analysis. 170(2). 475–511. 1 indexed citations
13.
Kérchy, László. (1999). Hyperinvariant subspaces of operators with non-vanishing orbits. Proceedings of the American Mathematical Society. 127(5). 1363–1370. 6 indexed citations
14.
Bercovici, Hari, et al.. (1999). Obstructions to diagonalization modulo Lorentz ideals. Pacific Journal of Mathematics. 191(2). 201–206. 8 indexed citations
15.
Kérchy, László. (1994). Unitary asymptotes of Hilbert space operators. Banach Center Publications. 30(1). 191–201. 8 indexed citations
16.
Kérchy, László. (1989). . Indiana University Mathematics Journal. 38(1). 173–173. 20 indexed citations
17.
Kérchy, László. (1987). On the residual parts of completely non-unitary contractions. Acta Mathematica Academiae Scientiarum Hungaricae. 50(1-2). 127–145. 4 indexed citations
18.
Kérchy, László. (1987). Invariant Subspaces of C 1.-Contractions with Non-Reductive Unitary Extensions. Bulletin of the London Mathematical Society. 19(2). 161–166. 4 indexed citations
19.
Kérchy, László. (1986). On the spectra of contractions belonging to special classes. Journal of Functional Analysis. 67(2). 153–166. 5 indexed citations
20.
Bercovici, Hari & László Kérchy. (1985). On the spectra of 𝐶₁₁-contractions. Proceedings of the American Mathematical Society. 95(3). 412–418. 5 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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