Toshiyuki Sugawa

1.1k total citations
82 papers, 619 citations indexed

About

Toshiyuki Sugawa is a scholar working on Geometry and Topology, Applied Mathematics and Mathematical Physics. According to data from OpenAlex, Toshiyuki Sugawa has authored 82 papers receiving a total of 619 indexed citations (citations by other indexed papers that have themselves been cited), including 72 papers in Geometry and Topology, 68 papers in Applied Mathematics and 11 papers in Mathematical Physics. Recurrent topics in Toshiyuki Sugawa's work include Analytic and geometric function theory (62 papers), Holomorphic and Operator Theory (44 papers) and Meromorphic and Entire Functions (15 papers). Toshiyuki Sugawa is often cited by papers focused on Analytic and geometric function theory (62 papers), Holomorphic and Operator Theory (44 papers) and Meromorphic and Entire Functions (15 papers). Toshiyuki Sugawa collaborates with scholars based in Japan, South Korea and India. Toshiyuki Sugawa's co-authors include Yong Chan Kim, Jae Ho Choi, Матти Вуоринен, Saminathan Ponnusamy, Vladimir Gutlyanskiî, Олли Мартио, S. Kanas, Ming Li, Stephan Ruscheweyh and Mark Elin and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Transactions of the American Mathematical Society and Proceedings of the American Mathematical Society.

In The Last Decade

Toshiyuki Sugawa

75 papers receiving 557 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Toshiyuki Sugawa Japan 13 544 486 73 68 29 82 619
St. Ruscheweyh Germany 8 476 0.9× 443 0.9× 32 0.4× 93 1.4× 31 1.1× 28 579
Mamoru Nunokawa Japan 13 823 1.5× 652 1.3× 10 0.1× 213 3.1× 11 0.4× 114 862
Gabriela Kohr Romania 20 1.4k 2.6× 1.5k 3.1× 112 1.5× 41 0.6× 66 2.3× 93 1.6k
Samuel L. Krushkal Israel 13 472 0.9× 366 0.8× 88 1.2× 5 0.1× 11 0.4× 71 524
A. Swaminathan India 10 285 0.5× 269 0.6× 4 0.1× 44 0.6× 15 0.5× 49 357
Nusrat Raza India 11 136 0.3× 245 0.5× 5 0.1× 28 0.4× 30 1.0× 28 349
Wolfgang Bertram France 9 129 0.2× 61 0.1× 143 2.0× 5 0.1× 22 0.8× 26 234
Tingbin Cao China 13 363 0.7× 518 1.1× 4 0.1× 28 1.0× 59 531
Brian Cole United States 10 24 0.0× 94 0.2× 78 1.1× 2 0.0× 13 0.4× 15 315
Alexandre I. Danilenko Ukraine 11 145 0.3× 16 0.0× 218 3.0× 2 0.0× 64 2.2× 50 319

Countries citing papers authored by Toshiyuki Sugawa

Since Specialization
Citations

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

Fields of papers citing papers by Toshiyuki Sugawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Toshiyuki Sugawa

This figure shows the co-authorship network connecting the top 25 collaborators of Toshiyuki Sugawa. A scholar is included among the top collaborators of Toshiyuki Sugawa 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 Toshiyuki Sugawa. Toshiyuki Sugawa 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.
Rainio, Oona, Toshiyuki Sugawa, & Матти Вуоринен. (2024). Uniformly Perfect Sets, Hausdorff Dimension, and Conformal Capacity. Journal of Geometric Analysis. 34(6). 1 indexed citations
2.
Sugawa, Toshiyuki, et al.. (2023). Moduli of quadrilaterals and quasiconformal reflection. Journal of Mathematical Analysis and Applications. 524(2). 127092–127092. 5 indexed citations
3.
Sugawa, Toshiyuki, et al.. (2022). Geometric deduction of the solutions to modular equations. The Ramanujan Journal. 59(2). 459–477. 1 indexed citations
4.
Sugawa, Toshiyuki, et al.. (2022). Conformally invariant complete metrics. Mathematical Proceedings of the Cambridge Philosophical Society. 174(2). 273–300. 3 indexed citations
5.
Sugawa, Toshiyuki, et al.. (2019). Schur Parameters and the Carathéodory Class. Results in Mathematics. 74(4). 4 indexed citations
6.
Sugawa, Toshiyuki, et al.. (2015). Quasiconformal extension of meromorphic functions with nonzero pole. Proceedings of the American Mathematical Society. 144(6). 2593–2601. 4 indexed citations
7.
Sugawa, Toshiyuki, et al.. (2013). Univalent Functions with Half-Integral Coefficients. Computational Methods and Function Theory. 13(1). 133–151. 4 indexed citations
8.
Kim, Yong Chan & Toshiyuki Sugawa. (2012). UNIVALENCE CRITERIA AND ANALOGUES OF THE JOHN CONSTANT. Bulletin of the Australian Mathematical Society. 88(3). 423–434. 2 indexed citations
9.
Kim, Yong Chan & Toshiyuki Sugawa. (2011). On power deformations of univalent functions. Monatshefte für Mathematik. 167(2). 231–240. 4 indexed citations
10.
Sugawa, Toshiyuki, et al.. (2011). Geometric invariants associated with projective structures and univalence criteria. Tohoku Mathematical Journal. 63(1). 2 indexed citations
11.
Ruscheweyh, Stephan, et al.. (2009). Completely monotone sequences and universally prestarlike functions. Israel Journal of Mathematics. 171(1). 285–304. 19 indexed citations
12.
Kim, Yong Chan & Toshiyuki Sugawa. (2008). Uniformly locally univalent functions and Hardy spaces. Journal of Mathematical Analysis and Applications. 353(1). 61–67. 2 indexed citations
13.
Choi, Jae Ho, Yong Chan Kim, & Toshiyuki Sugawa. (2007). A general approach to the Fekete-Szegö problem. Journal of the Mathematical Society of Japan. 59(3). 68 indexed citations
14.
Sugawa, Toshiyuki, et al.. (2007). Strong starlikeness for a class of convex functions. Journal of Mathematical Analysis and Applications. 336(2). 1005–1017. 4 indexed citations
15.
Kanas, S. & Toshiyuki Sugawa. (2006). ON CONFORMAL REPRESENTATIONS OF THE INTERIOR OF AN ELLIPSE. Annales Academiae Scientiarum Fennicae Mathematica. 31(2). 329–348. 22 indexed citations
16.
Kim, Yong Chan & Toshiyuki Sugawa. (2006). The Alexander transform of a spirallike function. Journal of Mathematical Analysis and Applications. 325(1). 608–611. 9 indexed citations
17.
Sugawa, Toshiyuki, et al.. (2005). Characterizations of hyperbolically convex regions. Journal of Mathematical Analysis and Applications. 309(1). 37–51. 4 indexed citations
18.
Sugawa, Toshiyuki. (2002). A REMARK ON THE AHLFORS-LEHTO UNIVALENCE CRITERION.
19.
Sugawa, Toshiyuki. (2002). Estimates of Hyperbolic Metric with Applications to Teichmuller Spaces. Kyungpook mathematical journal. 42(1). 51–51. 2 indexed citations
20.
Sugawa, Toshiyuki, et al.. (2000). DRAWING BERS EMBEDDINGS OF THE TEICHMULLER SPACE OF ONCE PUNCTURED TORI (Hyperbolic Spaces and Related Topics II). Kyoto University Research Information Repository (Kyoto University). 1163. 9–17. 1 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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