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非可換レベル構造と志村多様体の整数環上のモデル

Research Project

Project/Area Number 19654001
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Algebra
Research InstitutionHokkaido University

Principal Investigator

中村 郁  Hokkaido University, 大学院・理学研究院, 教授 (50022687)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2008: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsアーベル多様体 / モジュライ空間 / レベル構造 / 有限群スキーム / マッカイ対応 / モジュライ / ディンキン図形
Research Abstract

1999年に構成したモジュライ空間のコンパクト化SQ_(g,K)に加えて,もうひとつ自然なコンパクト化が[2]で構成された.また,ふたつのコンパクト化の間の関係について基本的な定理が[2]で証明された:
定理:SQ_(g,K)^toricからSQ_(g,K)への自然な射が存在する.これは内部A_(g,N)上では恒等写像であって,両者の正規化の同型を引き起こす.
今年度の目標の一つはアーベル多様体のモジュライ空間を悪い素点までコンパクト化を延長し,悪い素点での振る舞いを理解することであった.この点では多くの進展があった.たとえば,この問題で知られている結果はKatz-Mazur,Deligne-Rapoporlの1次元の結果であるが,この場合に一部非常に具体的に記述することができ,一般的な視点で見ることができるようになった.さらにDemazureのp-可除群の理論を適用して,一般の場合(高次元)でも詳細に研究できる状況を迎えている.現在鋭意研究中である.たとえば,\Gamma(3)の場合,[\Gamma:\Gamma(3)]=24であるが,これに対応して,標数3の超特異楕円曲線の全ての一般レベル構造を表現する空間として,階数24の有限スキームが得られる.さらに,モジュライ空間とその上の普遍楕円曲線は,局所的に整数環{\bf Z}[\zeta_3]の上の族としても構成される.

Report

(3 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (12 results)

All 2010 2009 2008 2007

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (7 results) Book (1 results)

  • [Journal Article] Another canonical compactification of the moduli space of abelian varieties2010

    • Author(s)
      Nakamura, Iku
    • Journal Title

      Advanced Studies in Pure Mathematics, Mathematical Society of Japan 58(印刷中)

      Pages: 69-135

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] McKay correpondence2009

    • Author(s)
      Nakamura, Iku
    • Journal Title

      Centre de Recherches Mathematiques CRM Proceedings and Lecture Notes 47

      Pages: 267-298

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] McKay correspondence2009

    • Author(s)
      Iku Nakamura
    • Journal Title

      Proc. Conference in honor of John McKay 2007 CRM Monograph series (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] McKay correspondence2008

    • Author(s)
      中村 郁
    • Journal Title

      Proceedings of the Conference in honor of John McKay (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] McKay correspondence2009

    • Author(s)
      Nakamura, Iku
    • Organizer
      Seminar on Calabi-Yau
    • Place of Presentation
      Queen' University, Canada
    • Year and Date
      2009-09-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] A canonical morphism from SQ_{g,K}^toric to SQ_{g,K}2009

    • Author(s)
      Nakamura, Iku
    • Organizer
      Moduli and Discrete Groups (2009.6.8-6.12, organized by Kondo and Mukai)
    • Place of Presentation
      Kyoto University
    • Year and Date
      2009-06-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Two compactifications of moduli spaces of abelian varieties2009

    • Author(s)
      Iku Nakamura
    • Organizer
      Arithmetic and algebraic geometry related to moduli spaces
    • Place of Presentation
      University of Tokyo
    • Year and Date
      2009-01-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] A canonical morphism from SQg, Ktoric to SQg, K2008

    • Author(s)
      Iku Nakamura
    • Organizer
      Conference of Algebraic geometry
    • Place of Presentation
      Kyoto University
    • Year and Date
      2008-11-21
    • Related Report
      2008 Annual Research Report
  • [Presentation] Stability and compactification of moduli of abelian varieties2008

    • Author(s)
      Iku Nakamura
    • Organizer
      Colloquium of the Centre de recherches mathematiques
    • Place of Presentation
      Montreal University, Canada
    • Year and Date
      2008-09-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] Compactification of moduli of abelian varieties (1)(2)2008

    • Author(s)
      Iku Nakamura
    • Organizer
      Seminar on Calabi-Yau
    • Place of Presentation
      Queen' University, Canada
    • Related Report
      2008 Annual Research Report
  • [Presentation] The G-orbit Hilbert schemes and McKay correspondence for simple singularities2007

    • Author(s)
      中村 郁
    • Organizer
      国際研究集会(Conference in honor of John McKay)"Groups and Symmetries: Form the Neolithic Scots to John McKay"
    • Place of Presentation
      Centre de recherches mathematiques(University of Montreal)
    • Year and Date
      2007-04-28
    • Related Report
      2007 Annual Research Report
  • [Book] Algebraic and Arithmetic Structures of Moduli Spaces, Advanced Studies in Pure Mathematics vol.582010

    • Author(s)
      Lin Weng, I.Nakamura
    • Total Pages
      480
    • Publisher
      Mathematical Society of Japan(印刷中)
    • Related Report
      2009 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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