This is a list of all faculty members of the Department of Mathematics. To find out each faculty member’s research and education information, please follow the links.
Professor
ATSUJI, Atsushi
Professor
ATSUJI, Atsushi
Department of Mathematics School of Fundamental Science and Technology
I am interested mainly in probabilistic properties of manifolds and geometric function theory with probabilistic methods such as stochastic calculus. Recent topics of my interest are theory of diffusion processes and martingales, potential theory on manifolds, value distribution theory of holomorphic maps, Nevanlinna theory, Liouville type theorems for harmonic functions and harmonic maps.
LAB：14-742
TEL：42745
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011512_ja.html
Professor
IGUCHI, Tatsuo
Professor
IGUCHI, Tatsuo
Department of Mathematics School of Fundamental Science and Technology
My main theme is to construct a mathematical theory of fluid mechanics. Especially, I am studying basic equations for water waves, which are formulated as a free boundary problem for the Euler equation. The water wave is a source of various dispersive equations and one needs various mathematical techniques in the analysis. So it is a very interesting subject both in fluid mechanics and in mathematics.
LAB：14-541
TEL：42728
LAB HP：http://www.math.keio.ac.jp/~iguchi/
YouTube：https://www.youtube.com/watch?v=_zaBjwO7ZU4
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011514_ja.html
Associate Professor
IKOMA, Norihisa
Associate Professor
IKOMA, Norihisa
Department of Mathematics School of Fundamental Science and Technology
My research interests are in the field of partial differential equations, particularly, nonlinear elliptic partial differential equations. These equations appear in physics, nonlinear optics, differential geometry and so on. I am interested in the existence of solutions and their properties.
LAB：14-741
TEL：42734
LAB HP：https://sites.google.com/view/norihisa-ikomas-webpage/
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011515_ja.html
Professor
IZEKI, Hiroyasu
Professor
IZEKI, Hiroyasu
Department of Mathematics School of Fundamental Science and Technology
I have been studying discrete groups from the viewpoint of geometer. My current main subject is to understand rigidity phenomena and fixed-point properties of discrete groups by an approach via discrete harmonic maps.
LAB：14-540
TEL：42751
YouTube：https://www.youtube.com/watch?v=uRsJjaQmYus
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011518_ja.html
Professor
OTA, Katsuhiro
Professor
OTA, Katsuhiro
Department of Mathematics School of Fundamental Science and Technology
This laboratory focuses on graph theory and combinatorics, e.g., cycles, hamiltonicity, connectivity, matchings and factors, and colorings in graphs. We are also interested in topological graph theory to investigate combinatorial properties of graphs embedded in a surface.
LAB：14-543
TEL：42726
LAB HP：http://www.comb.math.keio.ac.jp/
YouTube：https://www.youtube.com/watch?v=pDTt6zOCBhQ
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011521_ja.html
Associate Professor
ODA, Yoshiaki
Associate Professor
ODA, Yoshiaki
Department of Mathematics School of Fundamental Science and Technology
We mainly focus on combinatorics, algorithms and computational complexities. For example, we study the Traveling Salesman Problem. We are also interested in graph theory, discrete geometry, combinatorial structures on permutations and integer sequences.
LAB：14-542
TEL：42757
LAB HP：http://www.math.keio.ac.jp/~oda/
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011523_ja.html
Professor
KAKIMURA, Naonori
Professor
KAKIMURA, Naonori
Department of Mathematics School of Fundamental Science and Technology
My research interests center on optimization theory for engineering applications. In particular, I am interested in developing efficient algorithms for solving optimization problems with combinatorial structures such as graphs and networks. My research topics are also related to discrete mathematics, graph algorithms, and combinatorial matrix theory.
LAB：14-538
TEL：42747
LAB HP：http://www.math.keio.ac.jp/~kakimura/index-j.html
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011524_ja.html
Professor
KATSURA, Takeshi
Professor
KATSURA, Takeshi
Department of Mathematics School of Fundamental Science and Technology
I am interested in operator algebras, especially C*-algebras. Operator algebras are algebras consicting of bounded operators on Hilbert spaces. The theory of operator algebras has been developed with interplaying many fields in mathematics and physics after its born to give a mathematical formulation of quantum mechanics. I am working on C*-algebras associated with topological dynamical systems in the viewpoint of classification theory.
LAB：14-635
TEL：42761
LAB HP：http://www.math.keio.ac.jp/~katsura/index-j.html
YouTube：https://www.youtube.com/watch?v=fzZ6Hpd6fMk
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011525_ja.html
Associate Professor
KAMETANI, Yukio
Associate Professor
KAMETANI, Yukio
Department of Mathematics School of Fundamental Science and Technology
I am mainly interested in differential topology and gauge theory. These are related to other areas including differential geometry, algebraic geometry, and symplectic geometry. I am studying gauge theory form the viewpont of these relations.
LAB：14-634
TEL：42727
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011527_ja.html
Professor
KURIHARA, Masato
Professor
KURIHARA, Masato
Department of Mathematics School of Fundamental Science and Technology
My current research topic is mainly Iwasawa theory whose central theme is the main conjecture. I am constructing a theory refining the usual Iwasawa main conjecture in various ways . I am also constructing a theory on a new type of zeta elements which are elements related to zeta and L values in certain cohomology groups.
LAB：14-745
TEL：42759
LAB HP：http://www.math.keio.ac.jp/~kurihara/index.html
YouTube：https://www.youtube.com/watch?v=2rd6tF27zPw
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011530_ja.html
Professor
KOBAYASHI, Kei
Professor
KOBAYASHI, Kei
Department of Mathematics School of Fundamental Science and Technology
My main research topic is about theoretical statistics and it includes model selection and prediction theory. I am also interested in statistical analysis using mathematical structure of the models and the methods such as information geometry and algebraic statistics. One of the targets of my research is to develop statistically and mathematically feasible models for machine learning and to enhance accuracy of their methods.
LAB：14-445
TEL：42720
LAB HP：http://www.math.keio.ac.jp/~kei/Keis_HP.html
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011531_ja.html
Professor
SAKAGAWA, Hironobu
Professor
SAKAGAWA, Hironobu
Department of Mathematics School of Fundamental Science and Technology
I am interested in various problems in probability theory motivated by statistical mechanics. Especially, I am studying several stochastic models for phase separating random interfaces or interacting particle systems, etc.
LAB：14-738
TEL：42756
YouTube：https://www.youtube.com/watch?v=nMERVUsKT8w
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011534_ja.html
Professor
SHIRAISHI, Hiroshi
Professor
SHIRAISHI, Hiroshi
Department of Mathematics School of Fundamental Science and Technology
My current research interest is to establish fundamental statistical theory in a variety of financial time series data and its application. Especially, I am interested in visualization for the dependency of ivents in finantial market, and statistical estimation problem and its asymptotic property for ruin probabilities or optimal dividend barriers in field of actuarial science.
LAB：14-439
TEL：42733
LAB HP：http://www.stat.math.keio.ac.jp/labs/shiraishi/
YouTube：https://www.youtube.com/watch?v=gLho1HhM-f8
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011540_ja.html
Associate Professor
SOGA, Kohei
Associate Professor
SOGA, Kohei
Department of Mathematics School of Fundamental Science and Technology
I am interested in Hamiltonian dynamics, Hamilton-Jacobi equations, conservation laws and fundamental systems of equations in fluid dynamics. I am also working on mathematical analysis of numerical methods for partial differential equations.
LAB：14-740
TEL：42742
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011544_ja.html
Professor
TAKAHASI, Hiroki
Professor
TAKAHASI, Hiroki
Department of Mathematics School of Fundamental Science and Technology
Our goal is a qualitative understanding of solutions of dynamical systems, such as systems of ODEs and iterated maps. My recent interest is the study of chaotic dynamical systems with the use of ideas and methods borrowed from statistical mechanics.
LAB：14-437
TEL：42721
LAB HP：http://www.math.keio.ac.jp/~hiroki/
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011546_ja.html
Senior Assistant Professor
TAKAYAMA, Masahiro
Senior Assistant Professor
TAKAYAMA, Masahiro
Department of Mathematics School of Fundamental Science and Technology
My main concern is the motion of a flapping flag in the wind and the oscillation of a tube conveying fluid. In order to elucidate these phenomena mathematically, I am currently studying the motion of a hanging string in the gravity field.
LAB：14-444
TEL：42736
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011547_ja.html
Professor
TANAKA, Taka-aki
Professor
TANAKA, Taka-aki
Department of Mathematics School of Fundamental Science and Technology
This laboratory focuses on transcendental number theory to determine transcendence and algebraic independence of values of complex analytic functions, being a significant and difficult problem in mathematics and having many applications to other branches including algebraic number theory. Mainly studied is the theory of the solutions of certain functional equations called Mahler functions, which often appear as generating functions of various sequences representing mathematical phenomena.
LAB：14-441
TEL：42741
LAB HP：http://www.math.keio.ac.jp/~takaaki/index.html
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011549_ja.html
Professor
TAMURA, Akihisa
Professor
TAMURA, Akihisa
Department of Mathematics School of Fundamental Science and Technology
This laboratory focuses on optimization, in particular, discrete optimization. The current interests are discrete convex analysis, its applications to game theory, and optimization algorithms for minimization problems of discrete convex functions.
LAB：14-539
TEL：42735
LAB HP：http://www.math.keio.ac.jp/~aki-tamura/
YouTube：https://www.youtube.com/watch?v=u6TvtTusmDU
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011552_ja.html
Associate Professor
HATTORI, Kota
Associate Professor
HATTORI, Kota
Department of Mathematics School of Fundamental Science and Technology
My main concern is the geometry on Riemannian manifolds with special holonomy groups, such as Calabi-Yau manifolds and HyperKaehler manifolds. In particular, I am interested in the metric measure spaces to which the sequences of these manifolds Gromov-Hasudorff converge.
LAB：14-636
TEL：42750
YouTube：https://www.youtube.com/watch?v=g3ZYSSzs-ks
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011563_ja.html
Associate Professor
HAYASHI, Kenichi
Associate Professor
HAYASHI, Kenichi
Department of Mathematics School of Fundamental Science and Technology
My current research interest is evaluation of statistical models applied in biomedical research. I have also been studying statistical machine learning and aim to integrate both these research fields.
LAB：14-438
TEL：42765
LAB HP：http://www.stat.math.keio.ac.jp/
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011564_ja.html
Associate Professor
HAYANO, Kenta
Associate Professor
HAYANO, Kenta
Department of Mathematics School of Fundamental Science and Technology
I am mainly interested in smooth four-manifolds and smooth mappings on them, such as (broken) Lefschetz fibrations and stable mappings. I am studying global structures of them using combinatorial information derived from singularities of mappings.
LAB：14-744
TEL：42748
LAB HP：http://www.math.keio.ac.jp/~k-hayano/index_jp.html
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011565_ja.html
Professor
BANNAI, Kenichi
Professor
BANNAI, Kenichi
Department of Mathematics School of Fundamental Science and Technology
Our research is concerned with the arithmetic of elliptic curves and abelian varieties, especially conjectures giving the relation between arithmetic invariants of such varieties and special values of L-functions. We hope to attack such conjectures by unlocking the secrets of an important arithmetic geometric objects called the polylogarithm.
LAB：14-443、34-404
TEL：42763、40394
LAB HP：http://www.math.keio.ac.jp/~bannai/lab/
YouTube：https://www.youtube.com/watch?v=mCFn_nvNH7U
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011566_ja.html
Associate Professor
Poignard, Benjamin
Associate Professor
Poignard, Benjamin
Department of Mathematics School of Fundamental Science and Technology
The research is dedicated to the sparse statistical modeling for multivariate random models. It aims to solve the curse of dimensionality problem, that is the explosive number of parameters, inherent to most multivariate models by fostering parsimony among the parameters. The following points are considered: - the specification of relevant sparsity-based techniques; - the theoretical analysis of the sparsity-based estimators (asymptotic properties, finite sample); - the implementation of efficient optimization procedures.
LAB：14-445
TEL：47713
LAB HP：https://sites.google.com/site/poignardbenjamin
Researcher DataBase：https://k-ris.keio.ac.jp/html/100017413_en.html
Associate Professor
MIYAZAKI, Takuya
Associate Professor
MIYAZAKI, Takuya
Department of Mathematics School of Fundamental Science and Technology
I am working in automorphic forms on orthogonal groups, which are related to indefinite quadratic forms of several variables. Those are also linked to arithmetic and geometric properties of certain Shimura varieties, which stimulate our interests so much.
LAB：14-739
TEL：42744
LAB HP：http://www.math.keio.ac.jp/~miyazaki/
Researcher DataBase：https://k-ris.keio.ac.jp/html/100011573_ja.html
