جست‌وجوی استاد و پژوهشگر

• Science Education
• Teacher Education
• Children's Conceptual Understanding
• +۳ مورد دیگر

Hiroyuki Sato is a Professor at Waseda University's Faculty of Education and Integrated Arts and Sciences, School of Education. He has held this position since April 2022, having previously served as Associate Professor at the same institution from September 2020 to March 2022. His academic journey includes faculty positions at University of Yamanashi and Saga University, with earlier experience as a junior high school teacher at Takehaya Junior High School attached to Tokyo Gakugei University and Toko Gakuen Junior and Senior High School. Dr. Sato earned his Doctor of Education from Tokyo Gakugei University (2003-2006) and his Master of Education from Yokohama National University. His educational background forms the foundation for his expertise in science education and teacher development. His research interests focus on children's conceptual understanding in science, particularly examining how students develop scientific concepts across physics, biology, and chemistry domains. He investigates children's naive conceptions, metacognitive strategies in science learning, and innovative teaching approaches that address common misconceptions. His work bridges theoretical understanding with practical classroom applications. Dr. Sato's publication record demonstrates consistent scholarly contributions to science education, with particular emphasis on metacognitive regulation, information processing in science learning, and teacher education. His research often involves collaborative investigations with colleagues across Japanese institutions, resulting in numerous publications in leading Japanese science education journals. Japan Society for Science Education Paper Award (2020) for research on children's information selection in science learning Dr. Sato has secured multiple research grants from the Japan Society for the Promotion of Science, including projects on information selection in science learning, development of science class composition support systems, and rhetoric to develop scientific thinking abilities. His research has direct implications for science curriculum development and teacher education programs. His work group focuses on collaborative science education research, examining children's scientific understanding through empirical classroom studies and developing practical teaching strategies based on these findings.

• Anabelian Geometry
• Algebraic Geometry
• Number Theory
• +۲ مورد دیگر

Koichiro Sawada serves as Project Assistant Professor at Kyoto University's Research Institute for Mathematical Sciences (RIMS), specializing in high-dimensional anabelian geometry with focus on fundamental groups of hyperbolic polycurves and configuration spaces. His academic background includes: Master of Science, Kyoto University (2016) Doctor of Science, Kyoto University (2019) Sawada's research explores deep connections between geometric structures and algebraic invariants through anabelian techniques. His work establishes reconstruction frameworks for hyperbolic polycurves using pro-p groups, cohomology, and Lie algebras, with applications to Grothendieck's conjecture and finiteness theorems in arithmetic geometry. Recent publications (2022-2024) demonstrate significant advancements in configuration space anabelian geometry across positive characteristic settings and generalized group-theoretic properties, building upon foundational 2018 work establishing cohomological aspects and pro-p conjectures for hyperbolic polycurves. Scientific recognition includes: Japan Society for the Promotion of Science Research Fellowship for Young Scientists (DC2) Japan Society for the Promotion of Science Research Fellowship for Young Scientists (PD) His research is supported through RIMS project funding and JSPS fellowships, with collaborative work spanning institutions in Japan, France, and Taiwan. Sawada actively contributes to the Arithmetic & Homotopic Galois Theory seminar at RIMS and maintains significant international collaborations. Current research directions involve extending anabelian reconstruction to new geometric contexts and developing computational approaches for fundamental group analysis, with upcoming presentations scheduled at the 2025 East Asia Number Theory Conference and ZMC Conference.

• Hyperbolic Geometry
• Coxeter Groups
• Teichmüller Theory
• +۲ مورد دیگر

Yohei Komori is a Professor at the Department of Mathematics, Faculty of Education and Integrated Arts and Sciences, Waseda University. His research spans hyperbolic geometry, Coxeter groups, Teichmüller theory, and low-dimensional topology. He has made significant contributions to understanding growth rates of hyperbolic Coxeter groups, pleating coordinates in Teichmüller space, and structures of quasi-Fuchsian groups. Education: PhD in Mathematics (Waseda University). Research: Focus on hyperbolic Coxeter groups' growth rates (proved they are Perron/2-Salem numbers), Teichmüller space compactifications, and degenerate families of Riemann surfaces. Publications: 12 papers on Scopus, including works in Proceedings of the Japan Academy and Conformal Geometry and Dynamics . Teaching: Courses in geometry, analysis, and seminars for graduate and undergraduate students. Presentations: Invited talks at international conferences like the Oberseminar Geometrie (Fribourg) and Mini-Workshop on Reflection Groups (Hausdorff Institute).

• Geometry
• Basic Analysis
• Complex Analysis
• +۱ مورد دیگر

Katsuhiko Matsuzaki is a Professor at the Faculty of Education and Integrated Arts and Sciences , Waseda University, Tokyo. He holds a Ph.D. in Science from Kyoto University and has held academic positions at Okayama University, Ochanomizu University, and Tokyo Institute of Technology. His research spans geometric function theory, Teichmüller spaces, and quasiconformal mappings, with particular emphasis on symmetric structures and their applications to hyperbolic geometry. Education: Ph.D. (Science), Kyoto University (1992) Graduate School, Division of Natural Science, Kyoto University (1989) Faculty of Science, Kyoto University (1987) Professional Memberships: Mathematical Society of Japan Matsuzaki’s research explores the intersection of complex analysis and hyperbolic geometry , focusing on Teichmüller spaces of symmetric homeomorphisms, quasiconformal extensions, and the analytic structure of infinite-dimensional Teichmüller spaces. His work on p-Weil–Petersson curves , BMO embeddings , and vanishing Carleson measures has advanced the understanding of conformal invariants and their geometric implications. Recent publications analyze the complex Banach manifold structure of Teichmüller spaces and the rigidity of diffeomorphism groups under conjugation. Scientific Awards: Analysis Prize, Mathematical Society of Japan (2022) Takebe Katahiro Award, Mathematical Society of Japan (1996) His extensive research activity includes grants from the Japan Society for the Promotion of Science, such as projects on the Weil-Petersson metric , quasiconformal groups , and thermodynamic formalism for conformal semigroups. Matsuzaki’s contributions to the theory of infinite-dimensional Teichmüller spaces and modular groups reflect a deep interplay between geometric analysis, group theory, and dynamical systems.

Nariya KAWAZUMIمشاهده پروفایل

استاد

• Topology
• Riemann surfaces
• Mapping class groups
• +۳ مورد دیگر

Nariya Kawazumi is a Professor at the Department of Mathematical Sciences , Graduate School of Mathematical Sciences , University of Tokyo . His research focuses on topology and Riemann surfaces , particularly the cohomology of moduli spaces and automorphism groups of free groups . He utilizes twisted cocycles and canonical differential forms to explore these structures. Keywords: Riemann surface, mapping class group, Magnus expansion, hyperelliptic mapping class group Research Interests include: Topology of moduli spaces of Riemann surfaces Cohomology of automorphism groups of free groups Goldman-Turaev Lie bialgebras Kashiwara-Vergne problems Applications of twisted cocycles Students : Kawazumi has advised 9 PhD students from 1996 to 2020, including Yuuki Tadokoro , Takao Satoh , and Shun Wakatsuki . Collaborations and Workshops : He co-organized international workshops like the Japan-France joint research workshop (2015) and Special day for Teichmueller theory (2017), and contributed to the Berkeley-Tokyo Winter School (2016).

• Low-dimensional topology
• Algebraic topology
• Jacobi diagrams
• +۳ مورد دیگر

Mai Katada is an Assistant Professor at the Graduate School of Mathematical Sciences, The University of Tokyo. Her research focuses on low-dimensional topology, algebraic topology, and the study of Jacobi diagrams and IA-automorphism groups of free groups. She investigates the algebraic structures of stable (co)homology groups of automorphism groups of free groups and their analogues to mapping class groups of surfaces. Her work includes publications in prestigious journals such as Université de Grenoble. Annales de l'Institut Fourier and Journal of the Institute of Mathematics of Jussieu. She received the 15th Kyoto University Tachibana Award in March 2023 for her contributions as an outstanding female researcher. Katada's research connects knot theory with algebraic and category-theoretical approaches, emphasizing module structures on spaces of Jacobi diagrams under the actions of automorphism groups of free groups. She maintains active collaborations and participates in academic seminars and conferences.

Takuya Sakasaiمشاهده پروفایل

دانشیار

• Topology
• Mapping class groups of surfaces
• Characteristic classes of bundles
• +۴ مورد دیگر

Takuya Sakasai is an Associate Professor in the Department of Global Geometry at the Graduate School of Mathematical Sciences, The University of Tokyo. His research focuses on topology, particularly mapping class groups of surfaces, characteristic classes of bundles, and 3-dimensional topology. Education: He completed his doctoral dissertation titled "Mapping class groups, groups of homology cobordisms of surfaces and invariants of 3-manifolds" at The University of Tokyo in 2006. Research Interests: His work centers on the mapping class group of surfaces, exploring its connections to various fields such as topology, geometry, algebra, complex analysis, and mathematical physics. He investigates the cohomology rings of these groups as characteristic classes of surface bundles and their implications for the moduli space of Riemann surfaces. Additionally, he studies infinite-dimensional Lie algebras related to these structures and constructs new invariants for knots and 3-manifolds using noncommutative algebra. Scientific Awards: In 2007, he received the Takebe Katahiro Encouragement Award from the Mathematical Society of Japan. Workshops and Conferences: He has organized and participated in numerous international workshops, including the "Johnson homomorphisms and related topics" series (2013, 2017, 2019), the "Braids, Configuration Spaces and Quantum Topology" workshop (2015), and the "Topology and Computer" workshops (2013, 2014). Contact: sakasai@ms.u-tokyo.ac.jp

• Discrete Groups
• Ergodic Theory
• Orbit Equivalence Relations
• +۶ مورد دیگر

Yoshikata Kida is a Professor at the Graduate School of Mathematical Sciences, The University of Tokyo, specializing in Discrete Groups and Ergodic Theory. His research focuses on group actions on measure spaces, orbit equivalence relations, and their connections to functional analysis and geometric properties of groups. University: The University of Tokyo School: Graduate School of Mathematical Sciences Department: Department of Mathematics Academic Rank: Professor Professor Kida's work investigates how group-theoretic properties manifest in the structure of orbit equivalence relations, with applications to operator algebras. His research includes measure equivalence rigidity, stability in orbit equivalence, and algebraization of fixed point properties. His recent publications span topics like the mapping class group, amalgamated free products, and Baumslag-Solitar groups. He authored the 2024 book Discrete Groups and Ergodic Theory , consolidating his contributions to the field. Scientific awards include: The Inoue Research Award for Young Scientists (2008) The Geometry Prize (2009) Young Scientists' Prize (2011) Operator Algebra Prize (2016) Spring Prize (2018) JSPS Prize (2019) He has organized workshops such as Group actions and metric embeddings (2015), Metric geometry and analysis (2013), and Advances in non-commutative geometry (2017), demonstrating his active engagement in the academic community.

• Urban Sociology
• Social Area Analysis
• Food Desert Studies
• +۳ مورد دیگر

Tatsuto Asakawa is a Professor at Waseda University's Faculty of Human Sciences , specializing in Urban Sociology with a Ph.D. from Tokyo Metropolitan University (2021). His career spans institutions like Meiji Gakuin University (1996-2020), where he held roles from Associate Professor to Professor. Education: Ph.D. in Sociology (Tokyo Metropolitan University, 2021) Key Projects: Food Desert Analysis, Post-Disaster Urban Reconstruction, Socio-Spatial Inequality Studies Asakawa's research fuses spatial analysis with social theory , focusing on: Food Deserts : Quantifying urban food insecurity using GIS and multilevel modeling Disaster Recovery : Examining social capital and housing dynamics post-Great East Japan Earthquake Urban Polarization : Tracking spatial reorganization of social classes in Tokyo and other metropolises His 8 Scopus-indexed publications (h-index:4) include studies on: Elderly nutrition accessibility (2024) Children's health hazards in multicultural environments (2023) Commercial restructuring after disasters (2021) Awarded by Japan's Minister of Education (2025) and twice by the Japanese Association of Urban Sociology (2021, 2005), he leads projects like: 2024-2029 : Foreign-rooted children's health environments 2024-2028 : Disparity expansion in aging populations 2019-2024 : Regional optimal solutions for disaster recovery As Director of Waseda's Institute for Sustainable Communities, he integrates quantitative GIS with qualitative community studies , emphasizing policy applications for carbon-neutral urban planning and socially vulnerable groups .

• Algebraic Geometry
• Projective Geometry
• Gauss Maps
• +۵ مورد دیگر

Hajime Kaji is a Professor at the Department of Mathematics, School of Fundamental Science and Engineering, Waseda University. He holds a Doctor of Science from Waseda University and has been affiliated there since 1999. Research Focus: Algebraic Geometry, Projective Geometry, Gauss Maps in positive characteristic, Secant Varieties, Homogeneous Projective Varieties. Education: Master of Science (1987) and Doctor of Science (1993) from Waseda University. Kaji's research specializes in projective algebraic geometry, particularly Gauss maps and their separability in positive characteristic, and secant varieties of homogeneous projective varieties like adjoint and Freudenthal varieties. His work connects Lie algebra gradations with geometric properties of varieties and explores pathologies in positive characteristic. Publications include degree formulas for Grassmann bundles, studies on tangentially degenerate curves, and orbit decompositions of secant varieties. He has extensively investigated the relationship between Gauss map separability and reflexivity, providing counterexamples in positive characteristic. Teaching Activities encompass graduate and undergraduate courses in algebraic geometry, mathematics, and applied mathematics at Waseda University, with seminars and research projects spanning 2025. Professional Contributions: Organizer of algebraic geometry symposia, member of the Japanese Mathematical Society (1983–2023), and invited speaker at international conferences in Japan, Brazil, Korea, and the U.S.

Hokuto Konnoمشاهده پروفایل

دانشیار

• Gauge Theory
• 4-Manifold Topology
• Differential Geometry
• +۲ مورد دیگر

Hokuto Konno is an Associate Professor at the Graduate School of Mathematical Sciences, University of Tokyo , specializing in Gauge Theory and 4-Manifold Topology . His research develops family gauge theory—applying gauge-theoretical techniques to families of 3- and 4-dimensional manifolds—to study diffeomorphism groups and their distinctions from homeomorphism groups in dimension four. PhD (2019) at University of Tokyo under Mikio Furuta Postdoc at RIKEN iTHEMS (2019-2020) Faculty member at University of Tokyo since 2020 Long-term visits to MIT (2022-2024) and SLMath (2024-2025) Konno's work includes constructing characteristic classes for 4-manifold bundles, proving infiniteness of mapping class groups in dimension four, and developing cohomological invariants through family Seiberg-Witten theory. His research bridges geometric analysis with algebraic topology , focusing on exotic smooth structures and moduli spaces of 4-manifolds. Scientific awards include the Geometry Prize (2024) and Spring Prize (2025) from the Mathematical Society of Japan. He holds major grants like JSPS KAKENHI 25K00908 (2025-2030) and JSPS Overseas Research Fellowships (2022-2024). Konno actively organizes seminars at MIT, SLMath, and University of Tokyo, and has delivered lecture series at ICTP, Kyushu University, and Osaka Women's University.

• Arithmetic Geometry
• Anabelian Geometry

Shota Tsujimura is an Assistant Professor at the Research Institute for Mathematical Sciences (RIMS), Kyoto University. His work focuses on arithmetic geometry, particularly anabelian geometry and its applications. Research Interests: Anabelian phenomena in infinite extensions of rational fields, non-archimedean valuation fields, hyperbolic curves/function fields, Grothendieck-Teichmüller group, and mapping class groups.