Hachimori Yoshitaka

J-GLOBAL         Last updated: Dec 17, 2018 at 22:38
Hachimori Yoshitaka
Tokyo University of Science
Faculty of Science and Technology, Department of Mathematics
Job title
Associate Professor
Ph.D of Mathematical Sciences(The University of Tokyo)

Research Areas

  • Mathematics / Algebra / Number Theory

Academic & Professional Experience

Apr 2011
Associate Professor, Faculty of Science and Engineering, Department of Mathematics, Tokyo University of Science
Apr 2007
Mar 2011
Junior Associate Professor, Faculty of Science and Engineering, Department of Mathematics, Tokyo University of Science
Apr 2006
Mar 2007
Assistant Professor (non tenured), Department of Mathematics, Keio University
Aug 2004
Mar 2006
CRM-CICMA Postdoctoral Fellow, Centre Interuniversitaire en Calcul Mathematique Algebrique(CICMA, Montreal, Canada)
Sep 2005
Dec 2005
Research Assistant Professor, Concordia University
Sep 2004
May 2005
Research Assistant Professor, Concordia University
Apr 2004
Sep 2004
Part-time Lecturer, College of Industrial Technology, Nihon University
Apr 2003
Sep 2004
Part-time Lecturer, Tokyo Institute of Technology
Apr 2004
Aug 2004
Research Fellow of the 21st Century COE project, Graduate School of Mathematical Sciences, the University of Tokyo
Apr 2003
Mar 2004
Part-time Assistant, Department of Mathematics, Gakushuin University
Apr 2001
Mar 2003
JSPS Research Fellow(PD) at Gakushuin University, Japan Society for the Promotion of Science
Apr 2000
Mar 2001
JSPS Research Fellow(DC2) at the University of Tokyo, Japan Society for the Promotion of Science


Apr 1996
Mar 2001
PhD course of Mathematical Sciences, Graduate School of Mathematical Sciences, The University of Tokyo
Apr 1994
Mar 1996
Master course of Mathematical Sciences, Graduate School of Mathematical Sciences, The University of Tokyo
Apr 1990
Mar 1994
Undergraduate course, Department of Mathematics, Faculty of Science, The University of Tokyo

Published Papers

Yoshitaka Hachimori
JOURNAL OF THE RAMANUJAN MATHEMATICAL SOCIETY   26(2) 203-217   Jun 2011   [Refereed]
Yoshitaka Hachimori
JOURNAL OF THE RAMANUJAN MATHEMATICAL SOCIETY   25(3) 285-293   Sep 2010   [Refereed]
Yoshitaka Hachimori, Tadashi Ochiai
ASIAN JOURNAL OF MATHEMATICS   14(1) 11-18   Mar 2010   [Refereed]
Yoshitaka Hachimori, Romyar Sharifi
JOURNAL OF ALGEBRAIC GEOMETRY   14(3) 567-591   2005   [Refereed]
Yoshitaka Hachimori
JAPANESE JOURNAL OF MATHEMATICS   30(1) 1-28   2004   [Refereed]
Yoshitaka Hachimori
TOKYO JOURNAL OF MATHEMATICS   26(1) 179-198   2003   [Refereed]
Yoshitaka Hachimori, Otmar Venjakob
DOCUMENTA MATHEMATICA Extra Volume: Kazuya Kato's Fiftieth Birthday   443-478   2003   [Refereed]
Yoshitaka Hachimori, Kazuo Matsuno
Yoshitaka Hachimori, Kazuo Matsuno
JOURNAL OF ALGEBRAIC GEOMETRY   8(3) 581-601   1999   [Refereed]
Yoshitaka Hachimori, Humio Ichimura
MANUSCRIPTA MATHEMATICA   95(3) 377-395   1998   [Refereed]


Yoshitaka Hachimori
UK-Japan winter school 2007   13〜15、-21〜23   Jun 2007

Conference Activities & Talks

Functional equations and positively ramified extensions [Invited]
Hachimori Yoshitaka
Low dimensional topology and number theory X   28 Mar 2018   
Hachimori Yoshitaka
Number Theory Seminar at DPMMS, the University of Cambridge   2 Feb 2016   
Hachimori Yoshitaka
Number Theory and Geometry Seminars, University of Nottingham   13 Jan 2016   
Hachimori Yoshitaka
Seminar der Forschergruppe 'Symmetrie, Geometrie und Arithmetik', Univeritat Heidelberg   18 Dec 2015   
Iwasawa lambda-invariants and congruence of Galois representations [Invited]
Yoshitaka Hachimori
Japan-Korea Number Theory Seminar 2011   9 Nov 2011   
Congruence of Galois representations and anticyclotomic Z_p-extensions [Invited]
Hachimori Yoshitaka
Seminar at Tata Institute (India)   15 Mar 2010   
Euler characteristics of Fine Selmer groups
Yoshitaka Hachimori
2010 Korea-Japan Number Theory   23 Jan 2010   
Euler characteristics of Fine Selmer groups [Invited]
Hachimori Yoshitaka
NAG Seminar at Isaac Newton Institute for Mathematical Sciences, University of Cambridge   26 Nov 2009   
Introduction to non-commutative Iwasawa theory (II) and (IV)
Yoshitaka Hachimori
UK-Japan Winter School 2007 "Number Theory"   8 Jan 2007   
A survey on the main conjecture in noncommutative Iwasawa Theory
Hachimori Yoshitaka
CICMA Quebec-Vermont Number Theory Seminar (Universite de Montreal, Canada)   24 Nov 2005   

Association Memberships


Research Grants & Projects

Iwasawa theory for number fields and elliptic curves
Several universities (currently, Tokyo University of Science): 
Project Year: 1994 - 2018    Investigator(s): Yoshitaka Hachimori
A purpose of this research is to find out arithmetic properties of algebraic number fields, elliptic curves and Galois representations. Especailly, I am interested in mysterious relations between the Selmer groups and the L-functions attached to t...
Positively ramified extensions and elliptic units
JSPS: KAKENHI (Grant-in-Aid for Scientific Research (C))
Project Year: Apr 2012 - Mar 2014    Investigator(s): Hachimori Yoshitaka
Iwasawa theory for anti-cyclotomic extensions and for positively ramified extensions
JSPS: KAKENHI (Grant-in-Aid for Young Scientists (B))
Project Year: Apr 2008 - Mar 2010    Investigator(s): Hachimori Yoshitaka
2010 Korea-Japan Number Theory
JSPS: Japan-Korea Joint Seminar
Project Year: Jan 2010       Investigator(s): Hachimori Yoshitaka
Anti-cyclotomic and noncommutative Iwasawa Theory for elliptic curves and Galois representations
JSPS: KAKENHI (Grant-in-Aid for Young Scientists (Start-up))
Project Year: Sep 2006 - Mar 2008    Investigator(s): Hachimori Yoshitaka
Iwasawa Theory, classical and for elliptic curves
JSPS: KAKENHI (Grant-in-Aid for JSPS Research Fellow)
Project Year: Apr 2000 - Mar 2003    Investigator(s): Hachimori Yoshitaka


Aug 2017   Number theory Seminar 2017 August
Host of the seminar held on 1st August, 2017.
Guest speaker: Christian Wuthrich (University of Nottingham)
Sponsored by RIST, Tokyo University of Science.