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2013 Fiscal Year Annual Research Report

写像の特異点論の新展開

Research Project

Project/Area Number 23244008
Research InstitutionKyushu University

Principal Investigator

佐伯 修  九州大学, マス・フォア・インダストリ研究所, 教授 (30201510)

Co-Investigator(Kenkyū-buntansha) 大本 亨  北海道大学, 理学(系)研究科(研究院), 教授 (20264400)
與倉 昭治  鹿児島大学, 理工学研究科, 教授 (60182680)
岩瀬 則夫  九州大学, 数理(科)学研究科(研究院), 教授 (60213287)
鎌田 聖一  大阪市立大学, 理学(系)研究科(研究院), 教授 (60254380)
佐久間 一浩  近畿大学, 理工学部, 教授 (80270362)
Project Period (FY) 2011-05-31 – 2016-03-31
Keywords可微分写像 / 特異点 / 特異ファイバー / 同境 / 特異性類 / 特異点解消 / 国際研究者交流 / ブラジル:フランス
Research Abstract

写像の特異点論を,大域的観点,幾何構造付きでの観点等の新たな観点から見直し,数学の現代的潮流の中での特異点論の新たな展開・発展の様々な方向性をさぐることが大きな目的である.そのため平成25年度は,一般的な可微分写像のStein分解が三角形分割可能であることを前年度に示していたが,その応用として,非特異ファイバーの各連結成分の同境類とStein分解の最高次元のホモロジー群との間に深い関係があることを示し,特にStein分解の最高次元ホモロジー群が消えれば,非特異ファイバーの各連結成分はすべて零同境となることを示した.また特異写像の特異点消去を,はめ込み・埋め込みリフトの観点からも研究し,スペシャル・ジェネリック写像についてそうしたリフトが存在するための条件について詳しく調べ,値域の次元が低い場合に,余次元1のはめ込みリフトや埋め込みリフトが存在するための条件を完全に決定することができた.また,特異多様体の特性類の研究も進め,特にモチビックHirzebruch classについて詳しく調べた.また,こうした特性類をThom多項式との関連の観点からも研究した.さらに境界付き3次元多様体から平面への安定写像の特異ファイバーの理論を多変量データ解析とその可視化に応用し,そうしたデータの微分位相幾何的な特徴抽出の際の特異ファイバーの同定に使えることを示し,コンピュータサイエンスの専門家と共同研究を行い,その成果の社会への還元を目指した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

平成25年度に予定していた研究がほぼ予定通りに進行している.特に,特異点解消の観点から,埋め込み・はめ込みリフトの存在性問題を考えると,微分トポロジーにおける古典的諸結果と大きな関係があり,そうした事柄が問題の解決に重要な役割を果たすことに
気が付き,さらにそれを用いて完全な結果を得ることができたことは,今後につながる大きな収穫であった.また,非特異ファイバーの同境類についての理論を特異点論的立場から整備することができたことも大きな成果である.これをさらに進めれば,当初の計画であった多様体の不変量の特異点論的構成へとつながることが期待される.さらに,境界を持った多様体からの可微分写像について一定の成果を得られたことも,今後につながる大きな成果であった.特にそのデータ可視化への応用については,当初は予期していなかった意外な成果へとつながっており,今後の発展に非常に期待が持てる.

Strategy for Future Research Activity

予定通り,多様体の大域的構造と写像の特異点について(特に,可微分構造の「差」の代数的表現について),多様体の同境理論に基づいた有限型不変量・量子不変量の定式化について,特異Lefschetz 束構造の変形理論の展開について,複素超曲面特異点の位相型に
ついて,特異多様体の特性類について,特異点・特異ファイバーの消去のためのホモトピー論的障害について,研究を進めてゆく.特に,埋め込み・はめ込みリフトの存在・非存在と可微分構造の差の関係について重点的に研究を進めて行く予定である.また,特異Lefschetz束を用いた4次元多様体の不変量についても,特異点論的観点から研究を進めて行く.さらに境界付き多様体上の安定写像の特異ファイバー理論のデータ可視化への応用については当初から予期できなかった進展があり,こちらについても研究成果の社会への還元を目指して研究を発展的に継続してゆく.

  • Research Products

    (53 results)

All 2014 2013 Other

All Journal Article (17 results) (of which Peer Reviewed: 17 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (34 results) (of which Invited: 30 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Visual data mining based on differential topology: a survey2014

    • Author(s)
      O. Saeki and S. Takahashi
    • Journal Title

      Pacific Journal of Mathematics for Industry

      Volume: 6 Pages: Article 4

    • DOI

      10.1186/s40736-014-0004-y

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Connected components of regular fibers of differentiable maps2014

    • Author(s)
      J. T. Hiratuka and O. Saeki
    • Journal Title

      Topics on Real and Complex Singularities, Proceedings of the 4th Japanese-Australian Workshop (JARCS4), Kobe 2011, World Scientific

      Volume: なし Pages: 61-73

    • Peer Reviewed
  • [Journal Article] Visualizing multivariate data using singularity theory2014

    • Author(s)
      O. Saeki, S. Takahashi, D. Sakurai, Hsiang-Yun Wu, K. Kikuchi, H. Carr, D. Duke, and T. Yamamoto
    • Journal Title

      The Impact of Applications on Mathematics, Proceedings of Forum “Math-for-Industry” 2013

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Bifurcation of plane-to-plane map-germs of corank two2014

    • Author(s)
      T. Yoshida, Y. Kabata and T. Ohmoto
    • Journal Title

      Quarterly Jour. Mathematics

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Singularities of Maps and Characteristic Classes2014

    • Author(s)
      T. Ohmoto
    • Journal Title

      Advanced Studies in Pure Mathematics (Proc. Real and Complex Singularities, Sao Carlos, 2012)

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Classification of broken Lefschetz fibrations with small fiber genera2014

    • Author(s)
      R. Inanc Baykur and Seiichi Kamada
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Three-dimensional braids and their descriptions2014

    • Author(s)
      J. Scott Carter and Seiichi Kamada
    • Journal Title

      Topology and its Applications

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Chart description for hyperelliptic Lefschetz brations and their stabilization2014

    • Author(s)
      Hisaaki Endo and Seiichi Kamada
    • Journal Title

      Topology and its Applications

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Quandles and symmetric quandles for higher dimensional knots2014

    • Author(s)
      Seiichi Kamada
    • Journal Title

      Banach Center Publications

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Cords and 1-handles attached to surface-knots2014

    • Author(s)
      Seiichi Kamada
    • Journal Title

      Boletin de la Sociedad Matematica Mexicana

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Motivic bivariant characteristic classes2014

    • Author(s)
      Joerg Schuermann and Shoji Yokura
    • Journal Title

      Advances in Mathematics

      Volume: 250 Pages: 611-649

    • DOI

      DOI:10.1016/j.aim.2013.09.024

    • Peer Reviewed
  • [Journal Article] Naive motivic Donaldson-Thomas type Hirzebruch classes and some problems2014

    • Author(s)
      Vittoria Bussi and Shoji Yokura
    • Journal Title

      Proceedings of 12th International Workshop on Real and Complex Singularities

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] C-symplectic poset structure on a simply connected space2014

    • Author(s)
      Kazuya Hamada, Toshihiro Yamaguchi and Shoji Yokura
    • Journal Title

      Topology and its Applications

      Volume: 161 Pages: 107-126

    • DOI

      DOI:10.1016/j.topol.2013.09.009

    • Peer Reviewed
  • [Journal Article] Co-H-Spaces and almost localization2014

    • Author(s)
      N. Iwase and C.R. Costoya
    • Journal Title

      Proceedings of the Edinburgh Mathematical Society

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Triangulating Stein factorizations of generic maps and Euler characteristic formulas2013

    • Author(s)
      J. T. Hiratuka and O. Saeki
    • Journal Title

      RIMS Kokyuroku Bessatsu

      Volume: B38 Pages: 61-89

    • Peer Reviewed
  • [Journal Article] Desingularizing special generic maps2013

    • Author(s)
      O. Saeki and M. Takase
    • Journal Title

      Journal of Goekova Geometry Topology

      Volume: 7 Pages: 1-24

    • Peer Reviewed
  • [Journal Article] Characteristic classes of Hilbert schemes of points via symmetric products2013

    • Author(s)
      S. Cappell, L. Maxim, T. Ohmoto, J. Schuermann and S. Yokura
    • Journal Title

      Geometry & Topology

      Volume: 17 Pages: 1165-1198

    • DOI

      10.2140/gt.2013.17.1165

    • Peer Reviewed
  • [Presentation] Singular fibers of differentiable maps and low dimensional topology II2014

    • Author(s)
      O. Saeki
    • Organizer
      Visiting Lecture at Center for Advanced Studies
    • Place of Presentation
      Warsaw University of Technology, Poland
    • Year and Date
      20140325-20140325
    • Invited
  • [Presentation] Desingularizing special generic maps2014

    • Author(s)
      O. Saeki
    • Organizer
      Visiting Lecture at Institute of Mathematics
    • Place of Presentation
      Polish Academy of Science, Poland
    • Year and Date
      20140320-20140320
    • Invited
  • [Presentation] Singular fibers of differentiable maps and low dimensional topology I2014

    • Author(s)
      O. Saeki
    • Organizer
      Visiting Lecture at Center for Advanced Studies
    • Place of Presentation
      Warsaw University of Technology, Poland
    • Year and Date
      20140318-20140318
    • Invited
  • [Presentation] A new definition of differential forms in diffeological spaces --- 同変 de Rham 理論を目指して ---2014

    • Author(s)
      岩瀬則夫
    • Organizer
      不動点定理とその周辺
    • Place of Presentation
      奈良女子大学
    • Year and Date
      20140310-20140310
    • Invited
  • [Presentation] Chern Classes of Image and Discriminant of Stable Maps2014

    • Author(s)
      T. Ohmoto
    • Organizer
      Branched Coverings, Degenerations, and Related Topics 2014
    • Place of Presentation
      広島大学理学部
    • Year and Date
      20140309-20140309
    • Invited
  • [Presentation] Topology of manifolds and global theory of singularities2014

    • Author(s)
      O. Saeki
    • Organizer
      One day workshop on hypersurface singularity and its link manifolds
    • Place of Presentation
      東京理科大学
    • Year and Date
      20140123-20140123
    • Invited
  • [Presentation] A motivic Aluffi class2014

    • Author(s)
      S. Yokura
    • Organizer
      One day workshop on hypersurface singularity and its link manifolds
    • Place of Presentation
      東京理科大理学部
    • Year and Date
      20140123-20140123
    • Invited
  • [Presentation] A new definition of differential forms in diffeological spaces2013

    • Author(s)
      岩瀬則夫
    • Organizer
      Diffeology in Karatsu
    • Place of Presentation
      市民交流プラザ, 唐津市
    • Year and Date
      20131221-20131221
  • [Presentation] Chart description of surface braids2013

    • Author(s)
      S. Kamada
    • Organizer
      Advanced School and Discussion Meeting, Knot Theory and Its Applications
    • Place of Presentation
      IISER Mohali, Punjab, India
    • Year and Date
      20131217-20131217
    • Invited
  • [Presentation] 現代のトップテクノロジー,トポロジーを使ったデータ構造の解析 ~トポロジー技術を用いた分子構造解析とデータ可視化~2013

    • Author(s)
      佐伯修
    • Organizer
      数学メガネからみたイノベーション」
    • Place of Presentation
      稲盛財団記念館(九州大学伊都キャンパス)
    • Year and Date
      20131212-20131212
    • Invited
  • [Presentation] Associahedra, Multiplihedra and units in A_\infty structures2013

    • Author(s)
      N. Iwase
    • Organizer
      5th East Asian Conference of Algebraic Topology
    • Place of Presentation
      Chinese Academy of Sciences, Beijing, China
    • Year and Date
      20131206-20131206
  • [Presentation] Topology of manifolds and global theory of singularities2013

    • Author(s)
      O. Saeki
    • Organizer
      「可微分写像の特異点論とその周辺」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      20131125-20131125
    • Invited
  • [Presentation] A chart description of simple or regular surface braids2013

    • Author(s)
      S. Kamada
    • Organizer
      国際研究集会「the Lloyd Roeling UL Lafayette Mathematics Conference」
    • Place of Presentation
      University of Louisiana at Lafayette, Louisiana, 米国
    • Year and Date
      20131108-20131108
    • Invited
  • [Presentation] Image and Discriminant Chern Classes of Stable Maps2013

    • Author(s)
      大本亨
    • Organizer
      筑波大学大学院数理物質科学研究科数学教室談話会
    • Place of Presentation
      筑波大学
    • Year and Date
      20131107-20131107
    • Invited
  • [Presentation] Visualizing multivariate data using singularity theory2013

    • Author(s)
      O. Saeki
    • Organizer
      Forum “Math-for-Industry” 2013 -The Impact of Applications on Mathematics-
    • Place of Presentation
      Nishijin Plaza, Kyushu University
    • Year and Date
      20131104-20131104
    • Invited
  • [Presentation] Charts for 3-dimensional braids, Algebraic Structures in Knot Theory III2013

    • Author(s)
      S. Kamada
    • Organizer
      Western Fall Sectional Meeting, American Mathematical Society
    • Place of Presentation
      University of California at Riverside, Riverside, California, USA
    • Year and Date
      20131103-20131103
    • Invited
  • [Presentation] On Lusternik-Schnirelmann category of SO(10)2013

    • Author(s)
      岩瀬則夫
    • Organizer
      ホモトピー論シンポジウム
    • Place of Presentation
      岡山大学
    • Year and Date
      20131103-20131103
  • [Presentation] Image and Discriminant Chern Classes of Stable Maps2013

    • Author(s)
      大本亨
    • Organizer
      埼玉大学大学院理学研究科数学教室談話会
    • Place of Presentation
      埼玉大学
    • Year and Date
      20131017-20131017
    • Invited
  • [Presentation] Desingularizing special generic maps2013

    • Author(s)
      O. Saeki
    • Organizer
      The 1st Franco-Japanese-Vietnamese Symposium on Singularities (and The 7th Franco-Japanese Symposium on Singularities)
    • Place of Presentation
      Laboratoire J. A. Dieudonne, Universite de Nice Sophia Antipolis, France
    • Year and Date
      20130920-20130920
    • Invited
  • [Presentation] Shoji Yokura's works and Kagoshima2013

    • Author(s)
      T. Ohmoto
    • Organizer
      1st Franco-Japanese-Vietnamese Symposium on Singularities of the CNRS-VAST-JSPS
    • Place of Presentation
      ニース大学デュドンネ数学研究所(ニース,フランス)
    • Year and Date
      20130917-20130917
    • Invited
  • [Presentation] Motivic Donaldson-Thomas type Hirzebruch classes2013

    • Author(s)
      S. Yokura
    • Organizer
      The 1st Franco-Japanese-Vietnamese Symposium on Singularities
    • Place of Presentation
      Nice, France
    • Year and Date
      20130917-20130917
    • Invited
  • [Presentation] On projective planes obtained from knotted arcs2013

    • Author(s)
      S. Kamada
    • Organizer
      Seminar on Knot Theory
    • Place of Presentation
      慶北国立大学, テグ(Daegu), 韓国
    • Year and Date
      20130913-20130913
    • Invited
  • [Presentation] Associahedra, Multiplihedra and units in A_\infty form2013

    • Author(s)
      N. Iwase
    • Organizer
      International Conference on Topology and Geometry 2013 Joint with the 6th Japan-Mexico Topology Symposium
    • Place of Presentation
      島根大学
    • Year and Date
      20130906-20130906
  • [Presentation] Two and three dimensional braids and their descriptions2013

    • Author(s)
      S. Kamada
    • Organizer
      International Conference on Topology and Geometry 2013, Joint with the 6th Japan-Mexico Topology Symposium
    • Place of Presentation
      島根大学
    • Year and Date
      20130902-20130902
    • Invited
  • [Presentation] On study group activities2013

    • Author(s)
      O. Saeki
    • Organizer
      Seminarios do LMACC
    • Place of Presentation
      ICMC-USP, Brazil
    • Year and Date
      20130814-20130814
    • Invited
  • [Presentation] Topology of quasi-homogeneous isolated hypersurface singularities2013

    • Author(s)
      O. Saeki
    • Organizer
      Seminarios de Singularidades
    • Place of Presentation
      ICMC-USP, Brazil
    • Year and Date
      20130813-20130813
    • Invited
  • [Presentation] Bearded Treesの言語とA_\infty構造の単位元2013

    • Author(s)
      岩瀬則夫
    • Organizer
      第60回トポロジーシンポジウム
    • Place of Presentation
      大阪市立大学
    • Year and Date
      20130808-20130808
    • Invited
  • [Presentation] 2次元ブレイドとチャート表示2013

    • Author(s)
      鎌田聖一
    • Organizer
      第60回トポロジーシンポジウム
    • Place of Presentation
      大阪市立大学
    • Year and Date
      20130806-20130806
    • Invited
  • [Presentation] Image and Discriminant Chern Classes of Stable Maps2013

    • Author(s)
      T. Ohmoto
    • Organizer
      Mini-workshop on singularities 2013
    • Place of Presentation
      東京理科大学(東京都新宿区)
    • Year and Date
      20130721-20130721
    • Invited
  • [Presentation] モース関数とそのレーブグラフ入門2013

    • Author(s)
      佐伯修
    • Organizer
      Kobe Studio Seminar for Mathematics
    • Place of Presentation
      神戸大学発達科学部
    • Year and Date
      20130710-20130710
    • Invited
  • [Presentation] マス・フォア・インダストリ活動について2013

    • Author(s)
      佐伯修
    • Organizer
      Kobe Studio Seminar for Mathematics
    • Place of Presentation
      神戸大学発達科学部
    • Year and Date
      20130710-20130710
    • Invited
  • [Presentation] Desingularizing special generic maps2013

    • Author(s)
      O. Saeki
    • Organizer
      Topology Seminar, Fudan University
    • Place of Presentation
      Fudan University, Shanghai, China
    • Year and Date
      20130627-20130627
    • Invited
  • [Presentation] Broken Lefschetz fibrations and their moves2013

    • Author(s)
      O. Saeki
    • Organizer
      Special Session “Singularities in Geometry and Topology”, The Second Pacific Rim Mathematical Association Congress (PRIMA2013)
    • Place of Presentation
      Shanghai Jiao Tong Univ., China
    • Year and Date
      20130627-20130627
    • Invited
  • [Presentation] Broken Lefschetz fibrations and their moves2013

    • Author(s)
      O. Saeki
    • Organizer
      Geometry and topology of smooth 4-manifolds
    • Place of Presentation
      Max Planck Institute, Germany
    • Year and Date
      20130606-20130606
    • Invited
  • [Book] 数8の神秘2013

    • Author(s)
      佐久間一浩
    • Total Pages
      192
    • Publisher
      日本評論社
  • [Remarks] 佐伯修のホームページ

    • URL

      http://imi.kyushu-u.ac.jp/~saeki/index-j.html

URL: 

Published: 2015-05-28  

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