Risto Korhonen

2.9k total citations · 1 hit paper
50 papers, 1.6k citations indexed

About

Risto Korhonen is a scholar working on Applied Mathematics, Geometry and Topology and Statistical and Nonlinear Physics. According to data from OpenAlex, Risto Korhonen has authored 50 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 47 papers in Applied Mathematics, 34 papers in Geometry and Topology and 4 papers in Statistical and Nonlinear Physics. Recurrent topics in Risto Korhonen's work include Meromorphic and Entire Functions (47 papers), Advanced Differential Equations and Dynamical Systems (32 papers) and Holomorphic and Operator Theory (17 papers). Risto Korhonen is often cited by papers focused on Meromorphic and Entire Functions (47 papers), Advanced Differential Equations and Dynamical Systems (32 papers) and Holomorphic and Operator Theory (17 papers). Risto Korhonen collaborates with scholars based in Finland, China and United Kingdom. Risto Korhonen's co-authors include Rod Halburd, Janne Heittokangas, R. G. Halburd, Jouni Rättyä, Ilpo Laine, Kazuya Tohge, J. Rieppo, Jilong Zhang, Jiang Zhang and Tingbin Cao and has published in prestigious journals such as IEEE Transactions on Vehicular Technology, Journal of Mathematical Analysis and Applications and Physica D Nonlinear Phenomena.

In The Last Decade

Risto Korhonen

48 papers receiving 1.5k citations

Hit Papers

Difference analogue of th... 2005 2026 2012 2019 2005 100 200 300
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. Difference analogue of the Lemma on the Logarithmic Derivative with applications to difference equations
    2005 371 citations Rod Halburd, Risto Korhonen Journal of Mathematical Analysis and Applications profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Risto Korhonen Finland 19 1.6k 1.1k 59 50 49 50 1.6k
Yue-Ping Jiang China 15 414 0.3× 272 0.2× 24 0.4× 3 0.1× 20 0.4× 44 515
Branko Malešević Serbia 12 345 0.2× 145 0.1× 113 1.9× 4 0.1× 37 0.8× 60 417
Zhuan Ye United States 13 259 0.2× 157 0.1× 16 0.3× 2 0.0× 7 0.1× 30 353
Takeo Ohsawa Japan 20 895 0.6× 1.0k 0.9× 32 0.5× 7 0.1× 102 1.2k
Ingo Lieb Germany 14 362 0.2× 190 0.2× 76 1.3× 2 0.0× 17 0.3× 35 486
Stephen M. Buckley Ireland 15 709 0.4× 295 0.3× 120 2.0× 52 1.1× 57 819
Kendall C. Richards United States 12 432 0.3× 193 0.2× 16 0.3× 7 0.1× 29 0.6× 25 488
Marc Coppens Belgium 12 87 0.1× 404 0.4× 144 2.4× 11 0.2× 4 0.1× 61 434
Daniel A. Klain United States 10 337 0.2× 163 0.1× 49 0.8× 14 0.3× 22 401
Jianhua Zheng China 11 291 0.2× 185 0.2× 5 0.1× 5 0.1× 10 0.2× 52 383

Countries citing papers authored by Risto Korhonen

Since Specialization
Citations

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

Fields of papers citing papers by Risto Korhonen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Risto Korhonen

This figure shows the co-authorship network connecting the top 25 collaborators of Risto Korhonen. A scholar is included among the top collaborators of Risto Korhonen 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 Risto Korhonen. Risto Korhonen 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.
Korhonen, Risto, et al.. (2025). Meromorphic solutions of a class of delay differential equations. Journal of Mathematical Analysis and Applications. 547(2). 129360–129360.
2.
Korhonen, Risto, et al.. (2024). Zero order meromorphic solutions of q-difference equations of Malmquist type. Journal of Mathematical Analysis and Applications. 540(1). 128574–128574. 1 indexed citations
3.
Zhang, Yueyang & Risto Korhonen. (2023). A Malmquist–Steinmetz Theorem for Difference Equations. Constructive Approximation. 59(3). 619–673. 2 indexed citations
4.
Liu, Kai, et al.. (2023). Quasiperiodicity of transcendental meromorphic functions. Acta Mathematica Scientia. 44(1). 161–172.
5.
Korhonen, Risto, et al.. (2021). Variations on a Conjecture of C. C. Yang Concerning Periodicity. Computational Methods and Function Theory. 22(1). 27–33. 9 indexed citations
6.
Zheng, Jianhua & Risto Korhonen. (2020). Studies of Differences from the point of view of Nevanlinna Theory. Transactions of the American Mathematical Society. 373(6). 4285–4318. 9 indexed citations
7.
Korhonen, Risto, Jun Wang, & Zhuan Ye. (2019). Lower order and Baker wandering domains of solutions to differential equations with coefficients of exponential growth. Journal of Mathematical Analysis and Applications. 479(2). 1475–1489. 1 indexed citations
8.
Halburd, Rod & Risto Korhonen. (2017). Growth of meromorphic solutions of delay differential equations. UEF eRepo (University of Eastern Finland). 26 indexed citations
9.
Korhonen, Risto & Kazuya Tohge. (2016). Second main theorem in the tropical projective space. Advances in Mathematics. 298. 693–725. 3 indexed citations
10.
Korhonen, Risto, et al.. (2015). A note on partial sharing of values of meromorphic functions with their shifts. Journal of Mathematical Analysis and Applications. 435(2). 1241–1248. 17 indexed citations
11.
Halburd, R. G., Risto Korhonen, & Kazuya Tohge. (2014). Holomorphic curves with shift-invariant hyperplane preimages. Transactions of the American Mathematical Society. 366(8). 4267–4298. 120 indexed citations
12.
Korhonen, Risto, Ilpo Laine, & Kazuya Tohge. (2014). Tropical Value Distribution Theory and Ultra-Discrete Equations. WORLD SCIENTIFIC eBooks. 5 indexed citations
13.
Zhang, Jilong & Risto Korhonen. (2010). On the Nevanlinna characteristic of f(qz) and its applications. Journal of Mathematical Analysis and Applications. 369(2). 537–544. 53 indexed citations
14.
Halburd, Rod & Risto Korhonen. (2010). NONDECREASING FUNCTIONS, EXCEPTIONAL SETS AND GENERALIZED BOREL LEMMAS. Journal of the Australian Mathematical Society. 88(3). 353–361. 1 indexed citations
15.
Heittokangas, Janne, Risto Korhonen, Ilpo Laine, J. Rieppo, & Jiang Zhang. (2009). Value sharing results for shifts of meromorphic functions, and sufficient conditions for periodicity. Journal of Mathematical Analysis and Applications. 355(1). 352–363. 137 indexed citations
16.
Heittokangas, Janne, Risto Korhonen, & Jouni Rättyä. (2007). Linear Differential Equations with Solutions in the Dirichlet Type Subspace of the Hardy Space. Nagoya Mathematical Journal. 187. 91–113. 22 indexed citations
17.
Heittokangas, Janne, Risto Korhonen, & Jouni Rättyä. (2007). Linear differential equations with coefficients in weighted Bergman and Hardy spaces. Transactions of the American Mathematical Society. 360(2). 1035–1055. 30 indexed citations
18.
Heittokangas, Janne, Risto Korhonen, & Jouni Rättyä. (2004). GROWTH ESTIMATES FOR SOLUTIONS OF LINEAR COMPLEX DIFFERENTIAL EQUATIONS. 29(1). 233–246. 55 indexed citations
19.
Heittokangas, Janne, Risto Korhonen, & Jouni Rättyä. (2003). GENERALIZED LOGARITHMIC DERIVATIVE ESTIMATES OF GOL'DBERG–GRINSHTEIN TYPE. Bulletin of the London Mathematical Society. 36(1). 105–114. 17 indexed citations
20.
Korhonen, Risto, et al.. (2000). Intelligent Techniques for Condition Monitoring of Rolling Mill. Transport Policy. 119. 32–44. 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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