Ken’ichi Ohshika

414 total citations
37 papers, 162 citations indexed

About

Ken’ichi Ohshika is a scholar working on Geometry and Topology, Mathematical Physics and Applied Mathematics. According to data from OpenAlex, Ken’ichi Ohshika has authored 37 papers receiving a total of 162 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Geometry and Topology, 26 papers in Mathematical Physics and 13 papers in Applied Mathematics. Recurrent topics in Ken’ichi Ohshika's work include Geometric and Algebraic Topology (31 papers), Homotopy and Cohomology in Algebraic Topology (13 papers) and Mathematical Dynamics and Fractals (11 papers). Ken’ichi Ohshika is often cited by papers focused on Geometric and Algebraic Topology (31 papers), Homotopy and Cohomology in Algebraic Topology (13 papers) and Mathematical Dynamics and Fractals (11 papers). Ken’ichi Ohshika collaborates with scholars based in Japan, France and Canada. Ken’ichi Ohshika's co-authors include Makoto Sakuma, Christopher J. Leininger, Teruhiko Soma, Ilya Kapovich, Athanase Papadopoulos, Koji Fujiwara, Sadayoshi Kojima, Xiantao Wang, Robert Penner and Anna Wienhard and has published in prestigious journals such as Transactions of the American Mathematical Society, Inventiones mathematicae and Pacific Journal of Mathematics.

In The Last Decade

Ken’ichi Ohshika

31 papers receiving 138 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ken’ichi Ohshika Japan	9	156	126	67	21	14	37	162
Emmy Murphy United States	6	117 0.8×	82 0.7×	54 0.8×	17 0.8×	18 1.3×	9	120
Jean‐François Lafont United States	8	136 0.9×	128 1.0×	36 0.5×	32 1.5×	12 0.9×	34	162
Chris Wendl Germany	5	93 0.6×	64 0.5×	23 0.3×	15 0.7×	11 0.8×	9	96
María Teresa Lozano Spain	7	173 1.1×	123 1.0×	31 0.5×	64 3.0×	30 2.1×	25	182
Richard Weidmann Germany	9	166 1.1×	108 0.9×	16 0.2×	48 2.3×	61 4.4×	27	176
Paolo Ghiggini France	8	210 1.3×	172 1.4×	32 0.5×	61 2.9×	29 2.1×	15	211
Klaus Mohnke Germany	5	166 1.1×	119 0.9×	46 0.7×	21 1.0×	34 2.4×	6	168
F. Paulin France	7	202 1.3×	177 1.4×	62 0.9×	31 1.5×	43 3.1×	9	224
Kasra Rafi United States	10	251 1.6×	174 1.4×	98 1.5×	50 2.4×	25 1.8×	35	259
Alessandro Sisto United Kingdom	8	192 1.2×	170 1.3×	40 0.6×	45 2.1×	40 2.9×	35	201

Countries citing papers authored by Ken’ichi Ohshika

Since Specialization

Citations

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

Fields of papers citing papers by Ken’ichi Ohshika

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken’ichi Ohshika. 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 Ken’ichi Ohshika. The network helps show where Ken’ichi Ohshika may publish in the future.

Co-authorship network of co-authors of Ken’ichi Ohshika

This figure shows the co-authorship network connecting the top 25 collaborators of Ken’ichi Ohshika. A scholar is included among the top collaborators of Ken’ichi Ohshika 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 Ken’ichi Ohshika. Ken’ichi Ohshika 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

Ohshika, Ken’ichi & Athanase Papadopoulos. (2020). In the Tradition of Thurston. HAL (Le Centre pour la Communication Scientifique Directe). 1 indexed citations

Kapovich, Ilya, et al.. (2016). Conical limit points and the Cannon-Thurston map. Conformal Geometry and Dynamics of the American Mathematical Society. 20(4). 58–80. 2 indexed citations

Ким, Инканг, et al.. (2015). Convergence of freely decomposable Kleinian groups. Inventiones mathematicae. 204(1). 83–131. 1 indexed citations

Ohshika, Ken’ichi & Makoto Sakuma. (2015). Subgroups of mapping class groups related to Heegaard splittings and bridge decompositions. Geometriae Dedicata. 180(1). 117–134. 4 indexed citations

Ohshika, Ken’ichi, et al.. (2015). On Klein-Maskit combination theorem in space II. Kodai Mathematical Journal. 38(1). 1 indexed citations

Ким, Инканг, et al.. (2014). Primitive stable closed hyperbolic 3-manifolds. Topology and its Applications. 172. 68–71.

Ohshika, Ken’ichi. (2013). A note on the rigidity of unmeasured lamination spaces. Proceedings of the American Mathematical Society. 141(12). 4385–4389. 3 indexed citations

Ohshika, Ken’ichi, et al.. (2009). On Klein-Maskit combination theorem in space I. Osaka Journal of Mathematics. 46(4). 1097–1141. 3 indexed citations

Ohshika, Ken’ichi. (2009). Constructing geometrically infinite groups on boundaries of deformation spaces. Journal of the Mathematical Society of Japan. 61(4). 1 indexed citations

10.

Ohshika, Ken’ichi. (2005). The continuity of convex cores with respect to the geometric topology. Communications in Analysis and Geometry. 13(3). 479–510. 8 indexed citations

11.

Fujiwara, Koji & Ken’ichi Ohshika. (2002). The Second Bounded Cohomology of 3-manifolds. Publications of the Research Institute for Mathematical Sciences. 38(2). 347–354. 1 indexed citations

12.

Ohshika, Ken’ichi. (2001). Discrete Groups. Translations of mathematical monographs. 1 indexed citations

13.

Ohshika, Ken’ichi. (1998). Divergent sequences of Kleinian groups. Geometry and topology monographs. 419–450. 8 indexed citations

14.

Ohshika, Ken’ichi, et al.. (1998). Self-embeddings of Kleinian groups. Annales Scientifiques de l École Normale Supérieure. 31(3). 329–343. 12 indexed citations

15.

Ohshika, Ken’ichi. (1997). A convergence theorem for Kleinian groups which are free products. Mathematische Annalen. 309(1). 53–70. 2 indexed citations

16.

Ohshika, Ken’ichi. (1996). Topologically conjugate Kleinian groups. Proceedings of the American Mathematical Society. 124(3). 739–743. 3 indexed citations

17.

Ohshika, Ken’ichi. (1990). Minimal measured laminations in geometric 3-manifolds. Pacific Journal of Mathematics. 144(2). 327–344. 10 indexed citations

18.

Ohshika, Ken’ichi. (1987). Finite subgroups of mapping class groups of geometric 3-manifolds. Journal of the Mathematical Society of Japan. 39(3). 2 indexed citations

19.

Ohshika, Ken’ichi. (1987). Teichmüller spaces of seifert fibered manifolds with infinite π1. Topology and its Applications. 27(1). 75–93. 7 indexed citations

20.

Soma, Teruhiko, Ken’ichi Ohshika, & Sadayoshi Kojima. (1985). TOWARDS A PROOF OF THURSTON'S GEOMETRIZATION THEOREM FOR ORBIFOLDS(Hyperbolic Geometry and 3-Manifolds). Kyoto University Research Information Repository (Kyoto University). 568. 1–72. 3 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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