Lesław Gajek

768 total citations
58 papers, 533 citations indexed

About

Lesław Gajek is a scholar working on Management Science and Operations Research, Demography and Statistics and Probability. According to data from OpenAlex, Lesław Gajek has authored 58 papers receiving a total of 533 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Management Science and Operations Research, 20 papers in Demography and 19 papers in Statistics and Probability. Recurrent topics in Lesław Gajek's work include Insurance, Mortality, Demography, Risk Management (20 papers), Probability and Risk Models (17 papers) and Insurance and Financial Risk Management (13 papers). Lesław Gajek is often cited by papers focused on Insurance, Mortality, Demography, Risk Management (20 papers), Probability and Risk Models (17 papers) and Insurance and Financial Risk Management (13 papers). Lesław Gajek collaborates with scholars based in Poland, Germany and United States. Lesław Gajek's co-authors include Dariusz Zagrodny, Tomasz Rychlik, Lawrence D. Brown, Andrzej Okolewski, Marek Kałuszka, Ursula Gather, Jacek Jachymski, Piotr Pokarowski, Jan Mielniczuk and Krzysztof Ostaszewski and has published in prestigious journals such as The Annals of Statistics, Journal of Mathematical Analysis and Applications and Journal of Optimization Theory and Applications.

In The Last Decade

Lesław Gajek

52 papers receiving 489 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Lesław Gajek Poland	13	230	227	183	157	84	58	533
Jaap Geluk Netherlands	12	294 1.3×	221 1.0×	80 0.4×	66 0.4×	403 4.8×	39	746
Konstantin Borovkov Australia	15	243 1.1×	245 1.1×	61 0.3×	66 0.4×	242 2.9×	83	728
Giulia Di Nunno Norway	11	169 0.7×	87 0.4×	206 1.1×	157 1.0×	627 7.5×	54	783
Filip Lindskog Sweden	14	297 1.3×	208 0.9×	216 1.2×	113 0.7×	547 6.5×	32	819
Gyula Pap Hungary	13	80 0.3×	194 0.9×	94 0.5×	49 0.3×	356 4.2×	115	680
Giovanni B. Di Masi Italy	11	170 0.7×	103 0.5×	145 0.8×	66 0.4×	289 3.4×	26	530
Łukasz Stettner Poland	14	107 0.5×	73 0.3×	125 0.7×	48 0.3×	252 3.0×	72	487
Volker Krätschmer Germany	12	403 1.8×	270 1.2×	90 0.5×	37 0.2×	144 1.7×	32	512
Bruno Bassan Italy	10	153 0.7×	137 0.6×	61 0.3×	29 0.2×	118 1.4×	22	310
Edward Omey Belgium	16	441 1.9×	302 1.3×	29 0.2×	67 0.4×	327 3.9×	84	852

Countries citing papers authored by Lesław Gajek

Since Specialization

Citations

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

Fields of papers citing papers by Lesław Gajek

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Lesław Gajek

This figure shows the co-authorship network connecting the top 25 collaborators of Lesław Gajek. A scholar is included among the top collaborators of Lesław Gajek 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 Lesław Gajek. Lesław Gajek 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

Gajek, Lesław, et al.. (2025). Applications of the Banach fixed-point theorem to analyze insolvency problems of an insurance company. Journal of Fixed Point Theory and Applications. 27(2).

Gajek, Lesław, et al.. (2024). General bounds for the deficit distribution at ruin in the Sparre Andersen model. Lithuanian Mathematical Journal. 64(4). 453–466.

Gajek, Lesław, et al.. (2020). General methods for bounding multidimensional ruin probabilities in regime-switching models. Stochastics. 93(5). 764–779. 2 indexed citations

Gajek, Lesław, et al.. (2018). Finite-Horizon Ruin Probabilities in a Risk-Switching Sparre Andersen Model. Methodology And Computing In Applied Probability. 22(4). 1493–1506. 3 indexed citations

Gajek, Lesław, et al.. (2018). Deficit distributions at ruin in a regime-switching Sparre Andersen model. Journal of Applied Analysis. 24(1). 99–107. 2 indexed citations

Gajek, Lesław, et al.. (2011). Sharp approximations of ruin probabilities in the discrete time models. Scandinavian Actuarial Journal. 2013(5). 352–382. 6 indexed citations

Gajek, Lesław. (2004). On the deficit distribution when ruin occurs—discrete time model. Insurance Mathematics and Economics. 36(1). 13–24. 12 indexed citations

Gajek, Lesław & Andrzej Okolewski. (2002). Projection bounds on expectations of record statistics from restricted families. Journal of Statistical Planning and Inference. 110(1-2). 97–108. 12 indexed citations

Gajek, Lesław & Krzysztof Ostaszewski. (2001). Optimal Funding of a Liability. Journal of Insurance Issues. 24. 17–29. 3 indexed citations

10.

Gajek, Lesław & Marek Kałuszka. (2000). On the Average Return Rate for a Group of Investment Funds. University of Lodz Repository (University of Łódź). 161–171. 5 indexed citations

11.

Gajek, Lesław, et al.. (1998). Information inequalities for the minimax risk of sequential estimators (with applications). Applicationes Mathematicae. 25(1). 85–100.

12.

Gajek, Lesław & Tomasz Rychlik. (1996). Projection Method for Moment Bounds on Order Statistics from Restricted Families. Journal of Multivariate Analysis. 57(1). 156–174. 43 indexed citations

13.

Gajek, Lesław, et al.. (1996). The law of the iterated logarithm for Lp-norms of empirical processes. Statistics & Probability Letters. 28(2). 107–110. 5 indexed citations

14.

Gajek, Lesław, et al.. (1993). An approximate necessary condition for the optimal bandwidth selector in kernel density estimation. Applicationes Mathematicae. 22(1). 123–138. 1 indexed citations

15.

Gajek, Lesław & Dariusz Zagrodny. (1992). Countably orderable sets and their applications in optimization. Optimization. 26(3-4). 287–301. 13 indexed citations

16.

Gajek, Lesław & Ursula Gather. (1991). Estimating a scale parameter under censorship. Statistics. 22(4). 529–549. 3 indexed citations

17.

Gajek, Lesław & Ursula Gather. (1991). Moment inequalities for order statistics with applications to characterizations of distributions. Metrika. 38(1). 357–367. 12 indexed citations

18.

Gajek, Lesław. (1989). Estimating a density and its derivatives via the minimum distance method. Probability Theory and Related Fields. 80(4). 601–617. 3 indexed citations

19.

Gajek, Lesław. (1987). An improper Cramer-Rao lower bound. Applicationes Mathematicae. 19(2). 241–256. 3 indexed citations

20.

Gajek, Lesław. (1986). On Improving Density Estimators which are not Bona Fide Functions. The Annals of Statistics. 14(4). 49 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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