Kenichiro Umezu

408 total citations
37 papers, 263 citations indexed

About

Kenichiro Umezu is a scholar working on Applied Mathematics, Computational Theory and Mathematics and Mathematical Physics. According to data from OpenAlex, Kenichiro Umezu has authored 37 papers receiving a total of 263 indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Applied Mathematics, 26 papers in Computational Theory and Mathematics and 11 papers in Mathematical Physics. Recurrent topics in Kenichiro Umezu's work include Nonlinear Partial Differential Equations (31 papers), Advanced Mathematical Modeling in Engineering (26 papers) and Nonlinear Differential Equations Analysis (18 papers). Kenichiro Umezu is often cited by papers focused on Nonlinear Partial Differential Equations (31 papers), Advanced Mathematical Modeling in Engineering (26 papers) and Nonlinear Differential Equations Analysis (18 papers). Kenichiro Umezu collaborates with scholars based in Japan, Chile and Argentina. Kenichiro Umezu's co-authors include Kazuaki Taira and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Journal of Differential Equations and Nonlinear Analysis.

In The Last Decade

Kenichiro Umezu

35 papers receiving 248 citations

Peers

Kenichiro Umezu

CTM

PHEOH

Mostafa Bendahmane France

C Buse Romania

Shin–Hwa Wang Taiwan

Zuodong Yang China

Wenxian Shen United States

Yasuhito Miyamoto Japan

Susanna Piazzera Germany

Kazuaki Taira Japan

Jaroslav Milota Czechia

Nemat Nyamoradi Iran

Mostafa Bendahmane France

Kenichiro Umezu

202 ×0.9

181 ×1.1

CTM

99 ×1.6

92 ×1.8

PHEOH

42 ×1.0

Citations per year, relative to Kenichiro Umezu Kenichiro Umezu (= 1×) peers Mostafa Bendahmane

Countries citing papers authored by Kenichiro Umezu

Since Specialization

Citations

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

Fields of papers citing papers by Kenichiro Umezu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kenichiro Umezu

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

Umezu, Kenichiro. (2023). Uniqueness of a positive solution for the Laplace equation with indefinite superlinear boundary condition. Journal of Differential Equations. 350. 124–151. 1 indexed citations

Umezu, Kenichiro. (2022). Logistic elliptic equation with a nonlinear boundary condition arising from coastal fishery harvesting. Nonlinear Analysis Real World Applications. 70. 103788–103788. 2 indexed citations

Umezu, Kenichiro, et al.. (2021). Uniqueness and sign properties of minimizers in a quasilinear indefinite problem. Communications on Pure & Applied Analysis. 20(6). 2313–2322. 1 indexed citations

Umezu, Kenichiro, et al.. (2018). Loop Type Subcontinua of Positive Solutions for Indefinite Concave-Convex Problems. Advanced Nonlinear Studies. 19(2). 391–412. 2 indexed citations

Umezu, Kenichiro, et al.. (2017). Positivity results for indefinite sublinear elliptic problems via a continuity argument. Journal of Differential Equations. 263(8). 4481–4502. 9 indexed citations

Umezu, Kenichiro, et al.. (2017). An indefinite concave-convex equation under a Neumann boundary condition II. Topological Methods in Nonlinear Analysis. 49(2). 1–1. 3 indexed citations

Umezu, Kenichiro, et al.. (2017). An indefinite concave-convex equation under a Neumann boundary condition I. Israel Journal of Mathematics. 220(1). 103–160. 7 indexed citations

Umezu, Kenichiro, et al.. (2016). An elliptic equation with an indefinite sublinear boundary condition. Advances in Nonlinear Analysis. 8(1). 175–192. 3 indexed citations

Umezu, Kenichiro, et al.. (2016). Positive steady states of an indefinite equation with a nonlinear boundary condition: existence, multiplicity, stability and asymptotic profiles. Calculus of Variations and Partial Differential Equations. 55(4). 5 indexed citations

10.

Umezu, Kenichiro, et al.. (2015). Bifurcation for a logistic elliptic equation with nonlinear boundary conditions: A limiting case. Journal of Mathematical Analysis and Applications. 428(2). 1265–1285. 13 indexed citations

11.

Umezu, Kenichiro, et al.. (2015). On a concave–convex elliptic problem with a nonlinear boundary condition. Annali di Matematica Pura ed Applicata (1923 -). 195(6). 1833–1863. 3 indexed citations

12.

Umezu, Kenichiro, et al.. (2014). The effects of indefinite nonlinear boundary conditions on the structure of the positive solutions set of a logistic equation. Journal of Differential Equations. 257(11). 3935–3977. 9 indexed citations

13.

Umezu, Kenichiro. (2013). Global structure of supercritical bifurcation with turning points for the logistic elliptic equation with nonlinear boundary conditions. Nonlinear Analysis. 89. 250–266. 13 indexed citations

14.

Umezu, Kenichiro. (2011). Bifurcation approach to a logistic elliptic equation with a homogeneous incoming flux boundary condition. Journal of Differential Equations. 252(2). 1146–1168. 17 indexed citations

15.

Umezu, Kenichiro. (2005). One Parameter-Dependent Nonlinear Elliptic Boundary Value Problems Arising in Population Dynamics. 177–186. 1 indexed citations

16.

Umezu, Kenichiro. (2002). Bifurcation from Infinity for Asymptotically Linear Elliptic Eigenvalue Problems. Journal of Mathematical Analysis and Applications. 267(2). 651–664. 2 indexed citations

17.

Umezu, Kenichiro. (2000). Nonlinear elliptic boundary value problems suggested by fermentation. Nonlinear Differential Equations and Applications NoDEA. 7(2). 143–155. 7 indexed citations

18.

Umezu, Kenichiro. (1999). Positive solutions of a forced nonlinear elliptic boundary value problem. Journal of the Mathematical Society of Japan. 51(4). 1 indexed citations

19.

Umezu, Kenichiro & Kazuaki Taira. (1999). Growing-Up Positive Solutions of Semilinear Elliptic Boundary Value Problems. Journal of Mathematical Analysis and Applications. 238(1). 196–215. 1 indexed citations

20.

Taira, Kazuaki & Kenichiro Umezu. (1998). Semilinear Elliptic Boundary Value Problems in Chemical Reactor Theory. Journal of Differential Equations. 142(2). 434–454. 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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