J-GLOBAL         Last updated: Aug 20, 2019 at 10:27
National Institute of Technology, Kisarazu College
Department of Mathematics

Research Areas


Academic & Professional Experience

Apr 2010
Kisarazu national college of technology
Apr 2006
Mar 2010
Kisarazu national college of technology


Apr 2000
Mar 2006
Graduate School of Mathematical Sciences, University of Tokyo
Apr 1996
Mar 2000
Department of Mathematics, Faculty of Science and Technology, Keio University

Published Papers

Yuuki Tadokoro
Journal of Topology and Analysis      Aug 2018   [Refereed]
Yuuki Tadokoro
Handbook of Teichmüller Theory, Vol. VI (A. Papadopoulos, ed.), IRMA Lectures in Mathematics and Theoretical Physics Vol. 27 European mathematical Society   167-193   May 2016   [Refereed][Invited]
The period is a classical complex analytic invariant for a compact Riemann
surface defined by integration of differential 1-forms. It has a strong
relationship with the complex structure of the surface. In this chapter, we
review another complex a...
Internat. J. Math.   27(3)    Feb 2016   [Refereed]
We obtain the trace map image of the values of certain harmonic volumes for some quotients of Fermat curves. This provides the algorithm that the algebraic cycles called by the k-th Ceresa cycles are not algebraically equivalent to zero in the Jac...
Yuuki Tadokoro
Tsukuba J. Math.   38(2) 137-158   Apr 2015   [Refereed]
We introduce a geometric algorithm for finding a symplectic basis of the
first integral homology group of a compact Riemann surface which is a
Tex-cyclic covering of Tex branched over 3 points. It gives us an unknown
symplectic basis of the h...
Masataka Kaneko, Takayuki Abe, Kenji Fukazawa, Masayoshi Sekiguchi, Yuuki Tadokoro, Satoshi Yamashita, Setsuo Takato
Teaching Mathematics and Computer Science   8(1) 1   2010   [Refereed]
Tsukuba J. Math.   33(1) 29-38   2009   [Refereed]
We compute some value of the harmonic volume for the Fermat sextic. Using this computation, we prove that some special algebraic cycle in the Jacobian variety of the Fermat sextic is not algebraically equivalent to zero.
Kaneko M, Izumi H, Kitahara K, Abe T, Fukazawa K, Sekiguchi M, Tadokoro Y, Yamashita S, Takato S.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)   5102 LNCS(PART 2) 35-45   2008   [Refereed]
Mathematische Zeitschrift   260(2) 265-275   2008   [Refereed]
We prove some value of the harmonic volume for the Klein quartic C is nonzero modulo Tex, using special values of the generalized hypergeometric function 3F2. This result tells us the algebraic cycle C−C− is not algebraically equiva...
Masayoshi Sekiguchi, Masataka Kaneko, Yuuki Tadokoro, Satoshi Yamashita, Setsuo Takato
Computational Science – ICCS 2007   178   2007   [Refereed]
Kodai Math. J.   29(3) 370-382   2006   [Refereed]
We give a explicit computation of the pointed harmonic volumes of hyperelliptic curves with Weierstrass base points, which are paraphrased into a combinatorial formula.
Publ. Res. Inst. Math. Sci.   41(3) 799-820   2005   [Refereed]
We determine the harmonic volumes for all the hyperelliptic curves. This gives a geometric interpretation of a theorem established by A. Tanaka.


Masaru Kamata, Masayoshi Sekiguchi, Yuuki Tadokoro
   Feb 2016
We derive a discretized version of the nonlinear O(3) sigma model through a
discrete theory of complex analysis of Mercat. Adopting a simple
two-dimensional rectangular lattice, we obtain a discrete energy E^{disc.} and
a discrete area \cal{A}(f)^...
FUKAZAWA Kenji, ABE Takayuki, KANEKO Masataka, SEKIGUCHI Masayoshi, TADOKORO Yuuki, YAMASHITA Satoshi, TAKATO Setsuo
The Bulletin of Kisarazu National College of Technology   41 75-83   Jan 2008
KETpic has been developed as the macro package of Maple so as to generate LATEX source codes for clear drawings. Recently, the authors have ported KETpic to Mathematica. In this paper, we report on the procedure of the conversion and discuss on it...
YAMASHITA Satoshi, ABE Takayuki, KANEKO Masataka, SEKIGUCHI Masayoshi, TADOKORO Yuuki, FUKAZAWA Kenji, TAKATO Setsuo
14(1) 51-60   Aug 2007
YAMASHITA Satoshi, SEKIGUCHI Masayoshi, KANEKO Masataka, TADOKORO Yuuki, TAKATO Setsuo
Journal of the Japan Association for College of Technology   12(2) 81-86   May 2007
We can draw up beautiful documents by making use of TEX as we like, but it is difficult to illustrate with beautiful figures as we like because we need three conditions, which are accuracy, regulation and customization. To satisfy these conditions...

Conference Activities & Talks

Yuuki Tadokoro
Workshop: Johnson homomorphisms and related topics 2019   16 May 2019   
Yuuki Tadokoro
Complex Analysis seminar   6 Feb 2019   
Yuuki Tadokoro
Complex Analysis seminar   21 Nov 2018   
Yuuki Tadokoro
Topological Studies around Riemann Surfaces   10 Aug 2018   
Pointed harmonic volume and its relation to extended Johnson homomorphism [Invited]
Yuuki Tadokoro
Geometry Colloquium   27 Jul 2018   

Association Memberships


Research Grants & Projects

Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(A))
Project Year: 2006 - 2009    Investigator(s): Nariya KAWAZUMI
Bene, Penner and the principal investigator discovered fatgraph Magnus expansions, which connects a combinatorial structure of a Riemann surface directly to some algebraic aspects of the mapping class groups. The principal investigator also discov...