Jan Janas

730 total citations
47 papers, 408 citations indexed

About

Jan Janas is a scholar working on Mathematical Physics, Applied Mathematics and Computational Theory and Mathematics. According to data from OpenAlex, Jan Janas has authored 47 papers receiving a total of 408 indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Mathematical Physics, 28 papers in Applied Mathematics and 23 papers in Computational Theory and Mathematics. Recurrent topics in Jan Janas's work include Spectral Theory in Mathematical Physics (30 papers), Holomorphic and Operator Theory (23 papers) and Matrix Theory and Algorithms (19 papers). Jan Janas is often cited by papers focused on Spectral Theory in Mathematical Physics (30 papers), Holomorphic and Operator Theory (23 papers) and Matrix Theory and Algorithms (19 papers). Jan Janas collaborates with scholars based in Poland, Russia and United States. Jan Janas's co-authors include Serguei Naboko, Günter Stolz, Jan Stochel, Pavel Kurasov, Anne Boutet de Monvel, Н. К. Никольский and Ари Лаптев and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Journal of Computational and Applied Mathematics and Journal of Functional Analysis.

In The Last Decade

Jan Janas

43 papers receiving 361 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Jan Janas Poland	13	343	235	191	63	45	47	408
J. Dombrowski United States	12	183 0.5×	215 0.9×	151 0.8×	42 0.7×	49 1.1×	19	300
К. А. Мирзоев Russia	10	240 0.7×	150 0.6×	189 1.0×	19 0.3×	22 0.5×	56	305
Eduard Tsekanovskiı̆ United States	8	255 0.7×	147 0.6×	168 0.9×	41 0.7×	7 0.2×	25	303
Sergey A. Denisov United States	11	242 0.7×	191 0.8×	102 0.5×	64 1.0×	11 0.2×	49	317
T. Ya. Azizov Russia	10	191 0.6×	123 0.5×	163 0.9×	32 0.5×	23 0.5×	45	257
Chao-Liang Shen Taiwan	11	401 1.2×	122 0.5×	209 1.1×	46 0.7×	103 2.3×	23	465
Peter Yuditskii Austria	10	246 0.7×	226 1.0×	104 0.5×	97 1.5×	26 0.6×	33	343
Chun‐Kong Law Taiwan	14	459 1.3×	218 0.9×	255 1.3×	80 1.3×	5 0.1×	36	553
А. М. Савчук Russia	13	603 1.8×	313 1.3×	308 1.6×	72 1.1×	6 0.1×	52	666
Yu. Safarov United Kingdom	6	160 0.5×	92 0.4×	91 0.5×	38 0.6×	11 0.2×	22	209

Countries citing papers authored by Jan Janas

Since Specialization

Citations

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

Fields of papers citing papers by Jan Janas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jan Janas

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

All Works

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20 of 20 papers shown

Janas, Jan, et al.. (2020). Green Matrix Estimates of Block Jacobi Matrices II: Bounded Gap in the Essential Spectrum. Integral Equations and Operator Theory. 92(3).

Monvel, Anne Boutet de, et al.. (2016). ASYMPTOTICS OF LARGE EIGENVALUES FOR A CLASS OF BAND MATRICES. 1 indexed citations

Janas, Jan, Pavel Kurasov, Ари Лаптев, & Serguei Naboko. (2013). Operator methods in mathematical physics : Conference on Operator Theory, Analysis and Mathematical Physics, (OTAMP) 2010, Bedlewo, Poland. Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)). 1 indexed citations

Monvel, Anne Boutet de, Jan Janas, & Serguei Naboko. (2012). Elementary models of unbounded Jacobi matrices with a few bounded gaps in the essential spectrum. Operators and Matrices. 543–565. 1 indexed citations

Janas, Jan, et al.. (2010). A Weyl–Titchmarsh type formula for a discrete Schrödinger operator with Wigner–von Neumann potential. Studia Mathematica. 201(2). 167–189. 6 indexed citations

Janas, Jan, et al.. (2009). Asymptotic Behavior of Generalized Eigenvectors of Jacobi Matrices in the Critical (“Double Root”) Case. Zeitschrift für Analysis und ihre Anwendungen. 28(4). 411–430. 12 indexed citations

Janas, Jan, et al.. (2008). Unbounded Jacobi Matrices with Empty Absolutely Continuous Spectrum. Bulletin of the Polish Academy of Sciences Mathematics. 56(1). 39–51. 4 indexed citations

Janas, Jan, et al.. (2006). Alternative approaches to asymptotic behaviour of eigenvalues of some unbounded Jacobi matrices. Journal of Computational and Applied Mathematics. 200(1). 342–356. 11 indexed citations

Janas, Jan, Serguei Naboko, & Günter Stolz. (2004). Spectral theory for a class of periodically perturbed unbounded Jacobi matrices: elementary methods. Journal of Computational and Applied Mathematics. 171(1-2). 265–276. 22 indexed citations

10.

Janas, Jan, et al.. (2003). Spectral properties of Jacobi matrices by asymptotic analysis. Journal of Approximation Theory. 120(2). 309–336. 37 indexed citations

11.

Janas, Jan & Serguei Naboko. (2002). Spectral Analysis of Selfadjoint Jacobi Matrices with Periodically Modulated Entries. Journal of Functional Analysis. 191(2). 318–342. 33 indexed citations

12.

Janas, Jan & Serguei Naboko. (1999). Jacobi Matrices with Power-like Weights—Grouping in Blocks Approach. Journal of Functional Analysis. 166(2). 218–243. 29 indexed citations

13.

Janas, Jan. (1996). An operator version of the Newman-Shapiro isometry theorem. Integral Equations and Operator Theory. 26(2). 188–201. 3 indexed citations

14.

Janas, Jan & Jan Stochel. (1994). Unbounded Toeplitz Operators in the Segal-Bargmann Space, II. Journal of Functional Analysis. 126(2). 418–447. 17 indexed citations

15.

Janas, Jan. (1988). Toeplitz spectral inclusion and generalized in modulus property. Proceedings of the American Mathematical Society. 104(1). 231–234. 1 indexed citations

16.

Janas, Jan. (1988). Inductive limit of operators and its applications. Studia Mathematica. 90(2). 87–102. 6 indexed citations

17.

Janas, Jan. (1986). On integral formulas and their applications in functional calculus. Journal of Mathematical Analysis and Applications. 114(2). 328–339. 1 indexed citations

18.

Janas, Jan. (1980). Toeplitz operators for hypodirichlet algebras. Annales Polonici Mathematici. 37(3). 249–254. 2 indexed citations

19.

Janas, Jan. (1975). Note on the Joint Spectrum of the Wiener-Hopf Operators. Proceedings of the American Mathematical Society. 50(1). 303–303. 1 indexed citations

20.

Janas, Jan. (1975). Toeplitz operators related to certain domains in $C^{n}$. Studia Mathematica. 54(1). 73–79. 7 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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