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The study for covering properties of topological spaces and their products in terms of elementary submodels

Research Project

Project/Area Number 21540149
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field General mathematics (including Probability theory/Statistical mathematics)
Research InstitutionKanagawa University

Principal Investigator

YAJIMA Yukinobu  神奈川大学, 工学部, 教授 (10142548)

Co-Investigator(Renkei-kenkyūsha) SAKAI Masami  神奈川大学, 工学部, 教授 (60215598)
KEMOTO Nobuyuki  大分大学, 教育福祉科学部, 教授 (70161825)
Research Collaborator HIRATA Yasushi  神奈川大学, 工学部, 非常勤講師 (70375400)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords数学基礎論 / エレメンタリーサブモデル / 位相空間 / 積空間 / 被覆性 / 正規性 / ZFC
Research Abstract

The editor of the book titled "Recent Progress in General Topology III" asked me to write a survey concerning "Covering properties" with P. Szeptycki. We have taken up some applications of elementary submodels in it. Then the study of elementary submodels has been connected to that of covering properties and normality of the products with a monotonically normal factor. These studies have a similar aspect in the sense that the proofs are done by set-theoretic methods but the conclusions are completely expressed by general topology. Two papers have been published in 2011 and 2012 for this subject. In the present, getting the corporation with Nobuyuki Kemoto and Yasushi Hirata, this study has been greatly developed.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (44 results)

All 2012 2011 2010 2009

All Journal Article (18 results) (of which Peer Reviewed: 17 results) Presentation (24 results) Book (2 results)

  • [Journal Article] Products of monotonically normal spaces with factors defined by topological games2012

    • Author(s)
      Yukinobu Yajima
    • Journal Title

      Topology and Appl

      Volume: 159 Pages: 1223-1235

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Orthocompactness versus Normality in hyperspaces2012

    • Author(s)
      Yasushi Hirata and Nobuyuki Kemoto
    • Journal Title

      Topology and Appl

      Volume: 159 Pages: 1169-1176

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Frechet-Urysohn property of Pixley-Roy hyperspaces2012

    • Author(s)
      Masami Sakai
    • Journal Title

      Topology and Appl

      Volume: 159 Pages: 308-314

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Normality of products of monotonically normal spaces with compact spaces2011

    • Author(s)
      Yukinobu Yajima
    • Journal Title

      Topology and Appl

      Volume: 158 Pages: 2085-2089

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Selective separability and its variations2011

    • Author(s)
      Gary Gruenhage and Masami Sakai
    • Journal Title

      Topology and Appl

      Volume: 158 Pages: 1352-1359

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Normality covers of various products2011

    • Author(s)
      Yukinobu Yajima
    • Journal Title

      Topology and Appl

      Volume: 157 Pages: 1569-1592

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Products of monotonically normal spaces with compact spaces2011

    • Author(s)
      Yukinobu Yajima
    • Journal Title

      Topology and its Applications

      Volume: 158 Pages: 2085-2089

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On k-networks and weak bases for spaces2010

    • Author(s)
      Masami Sakai
    • Journal Title

      Topology and Appl

      Volume: 157 Pages: 2383-2388

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Strong zero-dimensionality of hyperspaces2010

    • Author(s)
      Nobuyuki Kemoto and Jun Terasawa
    • Journal Title

      Topology and Appl

      Volume: 157 Pages: 2376-2382

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mizokami and Lin's conjecture onσ-CF pseudo-bases2010

    • Author(s)
      Masami Sakai
    • Journal Title

      Topology and Appl

      Volume: 157 Pages: 152-156

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Orderability of subspades of well-orderable topological spaces2010

    • Author(s)
      Yasushi Hirata and Nobuyuki Kemoto
    • Journal Title

      Topology and Appl

      Volume: 157 Pages: 127-135

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Ramsey property for Cp(X)2010

    • Author(s)
      Masami Sakai
    • Journal Title

      Acta Math. Hungar

      Volume: 128 Pages: 96-105

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Normal covers of various products2010

    • Author(s)
      矢島幸信
    • Journal Title

      Topology and its Applications VOL.157

      Pages: 1569-1592

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sequences of semicontinuous functions accompanying continuous functions2009

    • Author(s)
      Haruto Ohta and Masami Sakai
    • Journal Title

      Topology and Appl

      Volume: 156 Pages: 2683-2691

    • NAID

      120001662293

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Certain sequences with compact closure2009

    • Author(s)
      Nobuyuki Kemoto and Yukinobu Yajima
    • Journal Title

      Topology and Appl

      Volume: 156 Pages: 1348-1354

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Selection principles and upper semicontinuous functions2009

    • Author(s)
      Masami Sakai
    • Journal Title

      Colloq. Math

      Volume: 117 Pages: 251-256

    • Related Report
      2011 Final Research Report
  • [Journal Article] Menger subsets of the Sorgenfrey line2009

    • Author(s)
      Masami Sakai
    • Journal Title

      Proc. Amer. Math. Soc

      Volume: 137 Pages: 3129-3138

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Certain sequences with compact closure2009

    • Author(s)
      家本宣幸、矢島幸信
    • Journal Title

      Topology and its Applications VOL.156

      Pages: 1348-1354

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] DCCC of Pixley-Roy hyperspaces2012

    • Author(s)
      Masami Sakai
    • Organizer
      46th Spring Topology and Dynamics Conference
    • Place of Presentation
      Mexico City(Mexico)
    • Year and Date
      2012-03-22
    • Related Report
      2011 Final Research Report
  • [Presentation] Products of monotonically normal spaces with various factors2011

    • Author(s)
      家本宣幸
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      埼玉大学教育学部
    • Year and Date
      2011-12-20
    • Related Report
      2011 Final Research Report
  • [Presentation] Products of monotonically normal spaces with various special factors2011

    • Author(s)
      家本宣幸
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      埼玉大学教育学部
    • Year and Date
      2011-12-20
    • Related Report
      2011 Annual Research Report
  • [Presentation] Cardinal functions of Pixley-Roy hyperspaces2011

    • Author(s)
      酒井政美
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      埼玉大学教育学部
    • Year and Date
      2011-12-19
    • Related Report
      2011 Final Research Report
  • [Presentation] Products of monotonically normal spaces and subspace of ordinals2011

    • Author(s)
      平田康史
    • Organizer
      一般および幾何学的トポロジーとその応用研究集会
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-10-19
    • Related Report
      2011 Final Research Report
  • [Presentation] Products of monotonically normal spaces and subspaces of ordinals2011

    • Author(s)
      平田康史
    • Organizer
      「一般および幾何学的トポロジーとその応用」研究集会
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-10-19
    • Related Report
      2011 Annual Research Report
  • [Presentation] Selective separability of Pixley-Roy hyperspaces2011

    • Author(s)
      Masami Sakai
    • Organizer
      11th Prague Topological Symposium
    • Place of Presentation
      Prague(Czech Republic)
    • Year and Date
      2011-08-09
    • Related Report
      2011 Final Research Report
  • [Presentation] Products of monotonically normal spaces with factors defined by topological games2011

    • Author(s)
      矢島幸信
    • Organizer
      第46回位相空間論シンポジウム
    • Place of Presentation
      静岡大学理学部
    • Year and Date
      2011-06-03
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] Selective separabilityとその未解決問題について2010

    • Author(s)
      酒井政美
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      筑波大学
    • Year and Date
      2010-12-22
    • Related Report
      2011 Final Research Report
  • [Presentation] Normality and products of topological games2010

    • Author(s)
      Yukinobu Yajima
    • Organizer
      International Conference Japan-Mexico on Topology and its Applications
    • Place of Presentation
      Universidad de Colima, Colima(Mexico)
    • Year and Date
      2010-09-30
    • Related Report
      2011 Final Research Report
  • [Presentation] Normality of products and topological games2010

    • Author(s)
      Yukinobu Yajima
    • Organizer
      International Conference Japan-Mexico on Topology and its Applications
    • Place of Presentation
      Universidad de Colima, Colima (Mexico)
    • Year and Date
      2010-09-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] Topological proper-ties of hyperspaces : a set theoretical approach2010

    • Author(s)
      Nobuyuki Kemoto
    • Organizer
      International Conference Japan-Mexico on Topology and its Applications
    • Place of Presentation
      Universidad de Colima, Colima(Mexico)
    • Year and Date
      2010-09-29
    • Related Report
      2011 Final Research Report
  • [Presentation] Selective separability and its variations2010

    • Author(s)
      Masami Sakai
    • Organizer
      Analysis, Topology and Applications 2010
    • Place of Presentation
      Vrnjacka Banja,(Serbia)
    • Year and Date
      2010-06-22
    • Related Report
      2011 Final Research Report
  • [Presentation] 集合論から位相空間論へ(流れに逆らって)2010

    • Author(s)
      矢島幸信
    • Organizer
      第45回位相空間論シンポジウム
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-06-05
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] A characterization for βX to be scattered2010

    • Author(s)
      酒井政美
    • Organizer
      第45回位相空間論シンポジウム
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-06-04
    • Related Report
      2011 Final Research Report
  • [Presentation] Scheeper's conjecture and upper semicontinuous functions2010

    • Author(s)
      酒井政美
    • Organizer
      第44回位相空間論シンポジウム
    • Place of Presentation
      島根大学
    • Year and Date
      2010-05-31
    • Related Report
      2011 Final Research Report
  • [Presentation] Normality follows from orthocompactness in products2009

    • Author(s)
      矢島幸信
    • Organizer
      General Topology シンポジウム
    • Place of Presentation
      大分大学丹野原キャンパス
    • Year and Date
      2009-12-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] Normality follows from orthocompactness in products2009

    • Author(s)
      矢島幸信
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      大分大学福祉教育科学部
    • Year and Date
      2009-12-18
    • Related Report
      2011 Final Research Report
  • [Presentation] Applications of elementary submodels to hyperspaces2009

    • Author(s)
      家本宣幸
    • Organizer
      General Topologyシンポジウム
    • Place of Presentation
      大分大学福祉教育科学部
    • Year and Date
      2009-12-17
    • Related Report
      2011 Final Research Report
  • [Presentation] The Ramsey property forCp(X)2009

    • Author(s)
      酒井政美
    • Organizer
      一般位相幾何学及び幾何学的トポロジーに関する研究集会
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2009-10-15
    • Related Report
      2011 Final Research Report
  • [Presentation] Sequences of upper semicontinuous functions accompany-ing continous functions2009

    • Author(s)
      大田春外
    • Organizer
      日本数学会秋季総合分科会
    • Place of Presentation
      大阪大学
    • Year and Date
      2009-09-26
    • Related Report
      2011 Final Research Report
  • [Presentation] The products of a monotonically normal space and a compact space and their normality2009

    • Author(s)
      Yukinobu Yajima
    • Organizer
      International Conference on Topology and its Applications
    • Place of Presentation
      Hacettepe University, Ankara(Turkey)
    • Year and Date
      2009-07-07
    • Related Report
      2011 Final Research Report
  • [Presentation] The products of a monotonically normal space and a compact space and their normality2009

    • Author(s)
      矢島幸信
    • Organizer
      International Conference on Topology and its applications
    • Place of Presentation
      Hacettepe University, アンカラ(トルコ)
    • Year and Date
      2009-07-07
    • Related Report
      2009 Annual Research Report
  • [Presentation] Menger subsets of the Sorgenfrey line2009

    • Author(s)
      Masami Sakai
    • Organizer
      24th Summer Conference on Topology and its Applications
    • Place of Presentation
      Czech Republic
    • Related Report
      2011 Final Research Report
  • [Book] Inc., Computational Mathe-matics : Theory, Methods and Applications2011

    • Author(s)
      Yukinobu Yajima
    • Total Pages
      443
    • Publisher
      Nova Science Publi-shers
    • Related Report
      2011 Final Research Report
  • [Book] Computational Mathematics : Theory, Method and Applications分担執筆"A stream in the study on normality of Σ-products", 353-386(P.G.Chareton編集)2011

    • Author(s)
      Yukinobu Yajima
    • Total Pages
      443
    • Publisher
      Nova Science Publishers, Inc
    • Related Report
      2011 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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