Otomar Hájek

1.1k total citations
43 papers, 687 citations indexed

About

Otomar Hájek is a scholar working on Geometry and Topology, Mathematical Physics and Control and Systems Engineering. According to data from OpenAlex, Otomar Hájek has authored 43 papers receiving a total of 687 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Geometry and Topology, 8 papers in Mathematical Physics and 7 papers in Control and Systems Engineering. Recurrent topics in Otomar Hájek's work include Advanced Differential Equations and Dynamical Systems (9 papers), Mathematical Dynamics and Fractals (7 papers) and Optimization and Variational Analysis (5 papers). Otomar Hájek is often cited by papers focused on Advanced Differential Equations and Dynamical Systems (9 papers), Mathematical Dynamics and Fractals (7 papers) and Optimization and Variational Analysis (5 papers). Otomar Hájek collaborates with scholars based in United States and U.S. Virgin Islands. Otomar Hájek's co-authors include N. P. Bhatia, Saber Elaydi, Kenneth A. Loparo and Ε. N. Chukwu and has published in prestigious journals such as Communications of the ACM, Lecture notes in mathematics and Journal of Mathematical Analysis and Applications.

In The Last Decade

Otomar Hájek

38 papers receiving 582 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Otomar Hájek United States 14 323 220 170 155 112 43 687
Emilio O. Roxin United States 10 310 1.0× 106 0.5× 75 0.4× 81 0.5× 51 0.5× 22 630
J. L. Massera 7 576 1.8× 139 0.6× 214 1.3× 434 2.8× 129 1.2× 8 1.1k
Jaroslav Kurzweil Czechia 17 356 1.1× 194 0.9× 401 2.4× 519 3.3× 68 0.6× 84 1.2k
L. Cesari United States 15 134 0.4× 106 0.5× 94 0.6× 242 1.6× 51 0.5× 48 528
Aaron Strauss United States 13 136 0.4× 68 0.3× 43 0.3× 175 1.1× 52 0.5× 30 491
Czesław Olech Poland 14 156 0.5× 166 0.8× 103 0.6× 230 1.5× 61 0.5× 40 564
Massimo Furi Italy 15 228 0.7× 307 1.4× 212 1.2× 488 3.1× 76 0.7× 84 844
Ludovic Rifford France 18 309 1.0× 284 1.3× 132 0.8× 366 2.4× 91 0.8× 46 812
John Paul Quinn Canada 4 440 1.4× 43 0.2× 62 0.4× 33 0.2× 56 0.5× 13 527
Luigi Amerio Switzerland 6 208 0.6× 35 0.2× 117 0.7× 298 1.9× 40 0.4× 13 451

Countries citing papers authored by Otomar Hájek

Since Specialization
Citations

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

Fields of papers citing papers by Otomar Hájek

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Otomar Hájek

This figure shows the co-authorship network connecting the top 25 collaborators of Otomar Hájek. A scholar is included among the top collaborators of Otomar Hájek 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 Otomar Hájek. Otomar Hájek 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.
Elaydi, Saber & Otomar Hájek. (1988). Exponential trichotomy of differential systems. Journal of Mathematical Analysis and Applications. 129(2). 362–374. 56 indexed citations
2.
Hájek, Otomar. (1979). Discontinuous differential equations, II. Journal of Differential Equations. 32(2). 171–185. 13 indexed citations
3.
Hájek, Otomar. (1979). Discontinuous differential equations, I. Journal of Differential Equations. 32(2). 149–170. 145 indexed citations
4.
Hájek, Otomar. (1971). Geometric Theory of Time-Optimal Control. SIAM Journal on Control. 9(3). 339–350. 31 indexed citations
5.
Hájek, Otomar. (1971). Parallelizability Revisited. Proceedings of the American Mathematical Society. 27(1). 77–77. 15 indexed citations
6.
Hájek, Otomar. (1971). Identification of control systems by performance. Theory of Computing Systems. 5(4). 349–352. 4 indexed citations
7.
Hájek, Otomar. (1971). Absolute stability of noncompact sets. Journal of Differential Equations. 9(3). 496–508. 5 indexed citations
8.
Hájek, Otomar. (1970). Compactness and asymptotic stability. Theory of Computing Systems. 4(2). 154–156. 4 indexed citations
9.
Hájek, Otomar. (1967). Theory of processes, I. Czechoslovak Mathematical Journal. 17(2). 159–199. 4 indexed citations
10.
Hájek, Otomar. (1967). Theory of processes, II. Czechoslovak Mathematical Journal. 17(3). 372–381,382. 1 indexed citations
11.
Hájek, Otomar. (1966). Notes on quotient maps. Commentationes Mathematicae Universitatis Carolinae. 7(3). 319–323. 15 indexed citations
12.
Hájek, Otomar. (1966). Notes on meromorphic dynamical systems, III. Czechoslovak Mathematical Journal. 16(1). 36–40. 3 indexed citations
13.
Hájek, Otomar. (1966). Notes on meromorphic dynamical systems, I. Czechoslovak Mathematical Journal. 16(1). 14–27. 21 indexed citations
14.
Hájek, Otomar. (1966). Notes on meromorphic dynamical systems, II. Czechoslovak Mathematical Journal. 16(1). 28–35. 14 indexed citations
15.
Hájek, Otomar. (1965). Structure of dynamical systems. Commentationes Mathematicae Universitatis Carolinae. 6(1). 53–72. 10 indexed citations
16.
Hájek, Otomar. (1965). Flows and periodic motions. Commentationes Mathematicae Universitatis Carolinae. 6(2). 165–178. 2 indexed citations
17.
Hájek, Otomar. (1965). Representation of finite-length modular lattices. Czechoslovak Mathematical Journal. 15(4). 503–520.
18.
Hájek, Otomar. (1964). Homological fixed point theorems. III. Commentationes Mathematicae Universitatis Carolinae. 5(2). 157–164. 4 indexed citations
19.
Hájek, Otomar. (1964). Cycle periods of plane dynamical systems. Journal of Mathematical Analysis and Applications. 9(1). 75–84. 2 indexed citations
20.
Hájek, Otomar. (1957). Direct decompositions of lattices, I. Czechoslovak Mathematical Journal. 7(1). 1–15. 2 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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