Ryuji Kajikiya

989 total citations
64 papers, 687 citations indexed

About

Ryuji Kajikiya is a scholar working on Applied Mathematics, Computational Theory and Mathematics and Mathematical Physics. According to data from OpenAlex, Ryuji Kajikiya has authored 64 papers receiving a total of 687 indexed citations (citations by other indexed papers that have themselves been cited), including 61 papers in Applied Mathematics, 50 papers in Computational Theory and Mathematics and 13 papers in Mathematical Physics. Recurrent topics in Ryuji Kajikiya's work include Nonlinear Partial Differential Equations (54 papers), Advanced Mathematical Modeling in Engineering (49 papers) and Nonlinear Differential Equations Analysis (23 papers). Ryuji Kajikiya is often cited by papers focused on Nonlinear Partial Differential Equations (54 papers), Advanced Mathematical Modeling in Engineering (49 papers) and Nonlinear Differential Equations Analysis (23 papers). Ryuji Kajikiya collaborates with scholars based in Japan, South Korea and Poland. Ryuji Kajikiya's co-authors include Tetsuro Miyakawa, Goro Akagi, Inbo Sim, Yong-Hoon Lee, Petri Juutinen, Jerome A. Goldstein, Satoshi Tanaka, Shinnosuke Ôharu and Kazunaga Tanaka and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Mathematical Analysis and Applications and Transactions of the American Mathematical Society.

In The Last Decade

Ryuji Kajikiya

56 papers receiving 608 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryuji Kajikiya Japan 12 647 402 280 123 69 64 687
Yuxia Guo China 17 686 1.1× 519 1.3× 391 1.4× 117 1.0× 70 1.0× 104 795
S. I. Pokhozhaev Russia 10 393 0.6× 213 0.5× 248 0.9× 131 1.1× 73 1.1× 51 532
Henghui Zou United States 11 620 1.0× 479 1.2× 229 0.8× 66 0.5× 96 1.4× 29 718
Arshak Petrosyan United States 13 485 0.7× 421 1.0× 219 0.8× 35 0.3× 42 0.6× 40 561
Giovanni Cupini Italy 17 599 0.9× 486 1.2× 265 0.9× 50 0.4× 49 0.7× 45 647
J. Chabrowski Australia 19 1.2k 1.9× 947 2.4× 558 2.0× 108 0.9× 115 1.7× 112 1.3k
Peihao Zhao China 12 394 0.6× 316 0.8× 109 0.4× 63 0.5× 66 1.0× 58 482
Roberta Musina Italy 13 613 0.9× 451 1.1× 263 0.9× 62 0.5× 50 0.7× 57 667
Verena Bögelein Germany 22 1.1k 1.7× 925 2.3× 586 2.1× 88 0.7× 51 0.7× 65 1.2k
Shangquan Bu China 13 542 0.8× 373 0.9× 320 1.1× 128 1.0× 146 2.1× 78 720

Countries citing papers authored by Ryuji Kajikiya

Since Specialization
Citations

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

Fields of papers citing papers by Ryuji Kajikiya

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuji Kajikiya

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuji Kajikiya. A scholar is included among the top collaborators of Ryuji Kajikiya 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 Ryuji Kajikiya. Ryuji Kajikiya 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.
Kajikiya, Ryuji. (2024). Sobolev compact embeddings in unbounded domains and its applications to elliptic equations. Journal of Mathematical Analysis and Applications. 543(2). 129001–129001. 1 indexed citations
2.
Kajikiya, Ryuji, et al.. (2024). Asymptotic behavior and monotonicity of radial eigenvalues for the p-Laplacian. Journal of Differential Equations. 387. 496–531. 1 indexed citations
3.
Kajikiya, Ryuji. (2021). Symmetric and asymmetric nodal solutions for the Moore–Nehari differential equation. Journal of the Mathematical Society of Japan. 74(2). 3 indexed citations
4.
Kajikiya, Ryuji, Inbo Sim, & Satoshi Tanaka. (2018). A complete classification of bifurcation diagrams for a class of (p,q)-Laplace equations. Journal of Mathematical Analysis and Applications. 462(2). 1178–1194. 1 indexed citations
5.
Kajikiya, Ryuji, Inbo Sim, & Satoshi Tanaka. (2018). Symmetry-breaking bifurcation for the Moore–Nehari differential equation. Nonlinear Differential Equations and Applications NoDEA. 25(6). 6 indexed citations
6.
Kajikiya, Ryuji, et al.. (2017). Bifurcation of positive solutions for the one-dimensional (p,q)-Laplace equation. SHILAP Revista de lepidopterología. 7 indexed citations
7.
Kajikiya, Ryuji. (2015). Nonradial positive solutions of the ‐Laplace Emden–Fowler equation with sign‐changing weight. Mathematische Nachrichten. 289(2-3). 290–299. 4 indexed citations
8.
Kajikiya, Ryuji. (2013). Least Energy Solutions and Group Invariant Solutions of the Hénon Equation. Advanced Nonlinear Studies. 13(3). 721–738. 1 indexed citations
9.
Akagi, Goro & Ryuji Kajikiya. (2013). Symmetry and stability of asymptotic profiles for fast diffusion equations in annuli. Annales de l Institut Henri Poincaré C Analyse Non Linéaire. 31(6). 1155–1173. 6 indexed citations
10.
Kajikiya, Ryuji, Yong-Hoon Lee, & Inbo Sim. (2013). Two positive solutions for one-dimensional $p$-Laplacian with a singular weight. Topological Methods in Nonlinear Analysis. 42(2). 427–448.
11.
Kajikiya, Ryuji. (2012). Least energy solutions of the generalized Hénon equation in reflectionally symmetric or point symmetric domains. Journal of Differential Equations. 253(5). 1621–1646. 4 indexed citations
12.
Kajikiya, Ryuji. (2012). Multiple solutions of sublinear elliptic equations with small perturbations. Journal of Mathematical Analysis and Applications. 398(2). 857–866. 5 indexed citations
13.
Kajikiya, Ryuji. (2011). Sublinear elliptic equations with singular coefficients on the boundary. Journal of the Mathematical Society of Japan. 63(1). 1 indexed citations
14.
Kajikiya, Ryuji. (2011). Non-radial least energy solutions of the generalized Hénon equation. Journal of Differential Equations. 252(2). 1987–2003. 14 indexed citations
15.
Sim, Inbo, Ryuji Kajikiya, & Yong-Hoon Lee. (2009). On a criterion for discrete or continuous spectrum of p-Laplace eigenvalue problems with singular sign-changing weights. Nonlinear Analysis. 72(7-8). 3515–3534. 3 indexed citations
16.
Kajikiya, Ryuji, Yong-Hoon Lee, & Inbo Sim. (2007). One-dimensional p-Laplacian with a strong singular indefinite weight, I. Eigenvalue. Journal of Differential Equations. 244(8). 1985–2019. 17 indexed citations
17.
Kajikiya, Ryuji. (2001). Orthogonal group invariant solutions of the Emden–Fowler equation. Nonlinear Analysis. 44(7). 845–896. 8 indexed citations
18.
Kajikiya, Ryuji. (1995). Norm Estimates for Radially Symmetric Solutions of Semilinear Elliptic Equations. Transactions of the American Mathematical Society. 347(4). 1163–1163. 2 indexed citations
19.
Kajikiya, Ryuji. (1993). Existence and Asymptotic-Behavior of Nodal Solutions for Semilinear Elliptic-Equations. Journal of Differential Equations. 106(2). 238–256. 9 indexed citations
20.
Kajikiya, Ryuji. (1991). Radially symmetric solutions of semilinear elliptic equations, existence and Sobolev estimates. Hiroshima Mathematical Journal. 21(1). 11 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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