Japanese English　　 　　　　　　　　　　　　　　　　　 Last update : November 19, 2011.

Yasuko Hasegawa

Department of Mathematics Keio University, Science and Technology
Project Assistant Professor (full time)
Graduate School of Mathematical Sciences the University of Tokyo
Project Researcher of GCOE (another post)

Reserch interests

Automorphic Forms，Number Theory

Curriculum Vitae

April, 2008--March, 2010　Reserch Fellow of the Japan Scociety for the Promotion of Science (DC2) (The University of Tokyo)
March, 2010　Graduated from Doctor course of Graduate School of Mathematical Sciences, The University of Tokyo
April, 2010--　Graduate School of Mathematical Sciences, The University of Tokyo, Project Researcher of GCOE
July, 2011-- Department of Mathematics Keio University, Science and Technology, Project Assistant Professor (Bannai laboratory)

Lectures

Spring： Faculty of Economics, The University of Keio 　Linear Algebra（Tusday 4，5 hours）
Fall： Faculty of Economics, The University of Keio　 　 Linear Algebra (continuing)（Tusday 4，5 hours）

Papers

• Yasuko Hasegawa and Takuya Miyazaki,
  Twisted Mellin transforms of the real analytic residue of Siegel-Eisenstein series of degree 2 ,
  Internat. J. Math. 20 (2009). No.8. pp. 1011--1027


• Yasuko Hasegawa,
  Principal series Whittaker functions on the real symplectic group of rank 2 ，
  RIMS K\^okyu\^roku Bessatsu. B21 (2010). pp. 111--118．


• Yasuko Hasegawa,
  Principal series and generalized principal series Whittaker functions with peripheral $K$-types
  on the real symplectic group of rank 2 ,
  Manuscripta math. 134 (2011), pp. 91--122.

Talks

●Talks (Outside)

1. A special value of Asai L-function of a lifting associated with imaginary quadratic fields ,
   Center of mathematical sciences, university of Cambridge UK-Japan winter school,
   University of Cambridge, January 10, 2007.


2. Symmetric square L-function of a lifting associated to imaginary quadratic fields ,
   2nd Japanese-German number theory workshop,
   Max Planck Institute for Mathematics，Febrary 18, 2008.


3. Twisted Mellin transforms of the real analytic residue of Siegel-Eisenstein series of degree 2 ,
   Number theory seminar in Mannhim, Mannhim university, Febrary 19, 2009.


4. Principal series Whittaker functions with peripherical $K$-type on the real symplectic group of rank 2 ,
   Number theory seminar in Mannhim, Mannhim university, Febrary 19, 2009.


5. Principal series and generalized principal series Whittaker functions with peripheral $K$-types on the real symplectic group of rank 2,
   Algebra and number theory seminar, Hausdorff research institute mathematics, Febrary 12, 2010．

● Talks (Japan)

1. The first term of Taylor expansion of Siegel-Eisenstein series ，
   Algebra Seminar in the University of Keio，
   Science and Technology, the University of Keio，December 22, 2005．


2. The first term of Taylor expansion of Siegel-Eisenstein series ,
   Number Theory Seminar in Waseda University，
   Science and Technology, the University of Waseda，January 13, 2006．


3. Dirichlet series attached to a residue of Siegel-Eisenstein Series，
   Algebra Seminar in Keio University，
   Science and Technology, the University of Keio, June 26, 2006.


4. Mellin transforms with Maass forms attached to the residue of Siegel-Eisenstein series ，
   Spherical Functions on Algebrac Groups and Applications for Multivariate Automorphic Form,
   Graduate School of Mathematical Sciences, the University of Tokyo, December 26, 2006.


5. Mellin transforms with Maass forms attached to the residue of Siegel-Eisenstein series ，
   Number Theory and Automorphic Forms Seminar,
   Department of Mathematics, the University of Osaka, Febrary 16, 2007.


6. Mellin transforms of a residue of Siegel-Eisenstein series ,
   The Mathematical Society of Japan，Faculty of Science, the University of Saitama，March 30, 2007．


7. Cohen-Eisenstein series and modular forms associated to imaginary quadratic fields，
   Number Theory Seminar， Graduate School of Mathematical Sciences, the University of Tokyo，May 2, 2007．


8. Symmetric square L-function of a lifting associated to imaginary quadratic fields ，
   Number Theory Seminar in Waseda University，
   Science and Technology, the University of Waseda, June 8, 2007.


9. Symmetric square L-function associated to imaginary quadratic fields
   Number Theory Seminar in Hiroshima，Faculty of Science, the University of Hiroshima， July 23, 2007.


10. Siegel Principal series Whittaker functions on $Sp(2,\mathbf {R})$，
    Monthly Seminar of Automorphic Forms and Number Thoery， Graduate School of Mathematical Sciences, the University of Tokyo，September 15, 2007．


11. Whittaker functions on $Sp(2, \mathbf{R})$ belonging to the Siegel principal series representations ,
    Meeting of Fourier Expansions of Automorphic Forms,
    Graduate School of Mathematical Sciences, the University of Tokyo, December 25, 2007.


12. Principal series Whittaker functions on the real symplectic group of rank 2
    , First Women's Meeting of Number Theorists, Department of Education, the University of Waseda, May 17, 2008.


13. Principal series Whittaker functions on the real symplectic group of rank 2 ，
    Number Theory Seminar in Waseda University，
    Science and Technology, the University of Waseda, July 4, 2008.


14. Generalized principal series Whittaker functions on the real symplectic group of rank 2 ,
    Number Theory Seminar in Hiroshima，Faculty of Science, the University of Hiroshima， July 23, 2008.


15. Principal series Whittaker functions on the real symplectic group of rank 2 ，
    New Viewpoints of Representation Theory and Noncommutative Harmonic analysis (RIMS Workshop), RIMS Kyoto University, September 18, 2008.


16. Generalized principal series Whittaker functions on $Sp(2,\mathbf{R})$
    Second Women's Meeting of Number Theorists, Department of Education, the University of Waseda, May 9, 2009.


17. Equidistribution of Eisenstein series in various aspects(Joint work with Shinya Koyama (Ewha Womans University and Toyo University) ，
    Number Theory Seminar in Hiroshima，Faculty of Science, the University of Hiroshima， July 21, 2009.


18. Generalized principal series Whittaker functions on $Sp(2,\mathbf{R})$ ,
    Algebra Seminar in Keio University，
    Science and Technology, the University of Keio，Nobember 26, 2009．


19. Principal series and generalized principal series Whittaker functions with peripheral $K$-types on $Sp(2,$R$)$ ，
    Number Theory Seminar in Tsuda University, the University of Tsuda, April 22, 2010


20. Generalized principal series Whittaker functions on $Sp(2,\mathbf{R})$ ,
    Third Women's Meeting of Number Theorists, Department of Education, the University of Waseda, May 22, 2010.


21. Fourier expansion of Eisenstein series and explicit formula of Whittaker functions on $Sp(2,\mathbf{R})$ ，
    Number Theory Seminar in Tsuda University, the University of Tsuda, Nobember 4, 2010


22. The standard $(\frak{g},K)$-modules for $Sp(2, \mathbf{R})$ ,
    Fourth Women's Meeting of Number Theorists, Department of Education, the University of Waseda, May 28, 2011.