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2013 Fiscal Year Final Research Report

Construction of Voronoi theory over adele groups

Research Project

  • PDF
Project/Area Number 23540016
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionOsaka University

Principal Investigator

WATANABE Takao  大阪大学, 理学(系)研究科(研究院), 教授 (30201198)

Co-Investigator(Kenkyū-buntansha) HAYATA Takahiro  山形大学, 理工学研究科, 准教授 (50312757)
Co-Investigator(Renkei-kenkyūsha) ODA Takayuki  東京大学, 数理科学研究科, 教授 (10109415)
Project Period (FY) 2011 – 2013
Keywords数論 / アデール群 / 簡約理論 / エルミート定数
Research Abstract

The group of unimodular integral n by n matrices acts properly discontinuous on the symmetric cone of positive definite n by n symmetric matrices. Voronoi's reduction theory is known as a classical method to construct a fundamental domain on this action. By this theory, one can compute generators and homology groups of discrete subgroups. The purpose of this project is to extend Voronoi's reduction theory to arbitraryl base fields and general algebraic groups. We obtained the following results: We extended a base field of Voronoi's reduction theory to totally real number fields. Furthermore, we introduced Ryshkov domains of adele groups by using arithmetical minimum functions, and then constructed fundamental domains of arithmetic quotients of adele gropus via Ryshkov domains.

  • Research Products

    (12 results)

All 2013 2012 2011

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (7 results)

  • [Journal Article] Voronoi's reduction theory of GL(n) over a totally real number field2013

    • Author(s)
      T. Watanabe, S. Yano and T. Hayashi
    • Journal Title

      American Mathematical Society Contemporary Mathematics

      Volume: 587巻 Pages: 213-232

    • DOI

      10.1090/conm/587/11680

    • Peer Reviewed
  • [Journal Article] A survey on Voronoi's theorem, In "Geometry and analysis of automorphic forms of several Varaibles", ed. by Y. Hamahata, T. Ichikawa, A. Murase and T. Sugano, Number Theory and Its Applications2012

    • Author(s)
      T. Watanabe
    • Journal Title

      World Scientific

      Volume: 7巻 Pages: 334-377

    • Peer Reviewed
  • [Journal Article] Cohomology of Siegel modular varieties of genus 2 and corresponding automprphic forms, In "Geometry and analysis of automorphic forms of several Varaibles", ed. by Y. Hamahata, T. Ichikawa, A. Murase and T. Sugano, Number Theory and Its Applications2012

    • Author(s)
      T. Oda
    • Journal Title

      World Scientific

      Volume: 7巻 Pages: 211-254

    • Peer Reviewed
  • [Journal Article] Zero Cells of the Siegel-Gottschling Fundamental Domain of Degree 22012

    • Author(s)
      T. Hayata, T. Oda, and T. Yatougo
    • Journal Title

      Experimental Mathematics

      Volume: 21巻 Pages: 266-279

    • DOI

      10.1080/10586458.2012.653273

    • Peer Reviewed
  • [Journal Article] Type one functions and Voronoi's theorem2011

    • Author(s)
      K. Sawatani and T. Watanabe
    • Journal Title

      Journal of Convex Analysis

      Volume: 18巻 Pages: 341-351

    • Peer Reviewed
  • [Presentation] 簡約可能代数群の算術商の基本領域の構成2013

    • Author(s)
      渡部隆夫
    • Organizer
      日本数学会秋季総合分科会
    • Place of Presentation
      愛媛大学城北キャンパス
    • Year and Date
      2013-09-24
  • [Presentation] Polyhedral reduction of Humbert forms2011

    • Author(s)
      渡部隆夫
    • Organizer
      Diophantine Methods, Lattices, and Arithmetic Theory of Quadratic Forms
    • Place of Presentation
      Banff International Research Station, Canada
    • Year and Date
      2011-11-15
  • [Presentation] Application of reduction theory to the construction of automorphic forms2011

    • Author(s)
      織田孝幸
    • Organizer
      Reduction Theory and Applications to Automorphic Forms
    • Place of Presentation
      白馬ハイマウントホテル
    • Year and Date
      2011-11-03
  • [Presentation] Polyhedral reduction of GL(n) over a totally real number field2011

    • Author(s)
      渡部隆夫
    • Organizer
      Reduction Theory and Applications to Automorphic Forms
    • Place of Presentation
      白馬ハイマウントホテル
    • Year and Date
      2011-11-02
  • [Presentation] 0-cells of the Siegel-Gottschling fundamental domain of degree 22011

    • Author(s)
      早田孝博
    • Organizer
      Reduction Theory and Applications to Automorphic Forms
    • Place of Presentation
      白馬ハイマウントホテル
    • Year and Date
      2011-11-01
  • [Presentation] Introduction to the classical reduction theory2011

    • Author(s)
      織田孝幸
    • Organizer
      Reduction Theory and Applications to Automorphic Forms
    • Place of Presentation
      白馬ハイマウントホテル
    • Year and Date
      2011-10-31
  • [Presentation] Zero cells of the Siegel -Gottschling fumdamental domain of degree 22011

    • Author(s)
      織田孝幸
    • Organizer
      The International Conference "Polynomial Computer Algebra"
    • Place of Presentation
      Euler International Mathematical Institute St. Petersburg, Russia
    • Year and Date
      2011-04-19

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Published: 2015-07-16  

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