Hirata Yasushi 平田康史

… Alternative Names

平田康史ヒラタヤスシ

HIRATA Yasushi 平田康史

HIRATAYA Sushi 平田康史

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Researcher Number	70375400
Other IDs
Affiliation (Current)	2025: 神奈川大学, 工学部, 特任准教授
Affiliation (based on the past Project Information) *help	2023: 神奈川大学, 工学部, 特任准教授 2019 – 2021: 神奈川大学, 工学部, 特任准教授 2014: 神奈川大学, 工学部, 特任准教授 2009 – 2011: 神奈川大学, 工学部, 非常勤講師
Review Section/Research Field	Principal Investigator Basic Section 12030:Basic mathematics-related Except Principal Investigator General mathematics (including Probability theory/Statistical mathematics)
Keywords	Principal Investigator 順序数の位相 / 辞書式順序積 / extent / 単調正規空間 / D-空間 / dually discrete / irreducible / 積空間 / 決定不可能命題 / 巨大基数 … More / C-埋め込み / 長方形的積空間 / 非可算積 / C-,C-,P-埋め込み / 順序数の部分空間 / 一般順序空間 / C*-, C-, P-埋め込み … More Except Principal Investigator 正規性 / 被覆性 / 積空間 / 位相積空間 / △-正規 / △-パラコンパクト / 正規 / エレメンタリ―サブモデル / D-空間 / 定常集合 / 単調正規空間 / コンパクト空間 / ZFC / 位相空間 / エレメンタリーサブモデル / 数学基礎論 / indescribability / 強制法 / regular space / projection / P_κλ / Lindelof space / normal space / orthocompact / compact space / unbranched proerty / P(λ) / stationary / reflection / イデアル / cofinality / コンパクト基数 / stationary set / 分割の性質 / ineffability / Pκλ Less

単調正規空間の積空間におけるZFCで決定不可能な命題の研究Principal Investigator
- Principal Investigator
  
  平田康史
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Kanagawa University
Study of C*-, C-, P-embeddings in products of monotonically normal spacesPrincipal Investigator
- Principal Investigator
  
  Hirata Yasushi
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Kanagawa University
The set-theoretic study for the products with a monotonical normal factor in terms of stationary sets
- Principal Investigator
  
  YAJIMA Yukinobu
- Project Period (FY)
  2012 – 2014
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kanagawa University
The study for covering properties of topological spaces and their products in terms of elementary submodels
- Principal Investigator
  
  YAJIMA Yukinobu
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kanagawa University
Infinite combinatorial principles and compact cardinals
- Principal Investigator
  
  ABE Yoshihiro
- Project Period (FY)
  2008 – 2010
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kanagawa University

All 2024 2023 2022 2020 2019 2016 2015 2014 2013 2012 2011 2010 2009 Other

All Journal Article Presentation

[Journal Article] Cardinal functions on lexicographic products2024
- Author(s)
  Yasushi Hirata and Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications
  
  Volume: to appear Pages: 108954-108954
- DOI
  10.1016/j.topol.2024.108954
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23K03206
[Journal Article] Equalities for the extent of infinite products and Σ-products2022
- Author(s)
  Hirata Yasushi、Usuba Toshimichi、Yajima Yukinobu
- Journal Title
  
  Topology and its Applications
  
  Volume: 307 Pages: 107946-107946
- DOI
  10.1016/j.topol.2021.107946
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606, KAKENHI-PROJECT-18K03403
[Journal Article] Inequality and equality for the extent of products with a special factor2022
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology Proceedings
  
  Volume: 59 Pages: 223-241
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] The weight of lexicographic products2020
- Author(s)
  Yasushi Hirata and Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications
  
  Volume: 284 Pages: 107357-107357
- DOI
  10.1016/j.topol.2020.107357
- NAID
  40022258209
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] A characterization of the countable paracompactness for products of ordinals2020
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology and its Applications
  
  Volume: 282 Pages: 107325-107325
- DOI
  10.1016/j.topol.2020.107325
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] A characterization of paracompactness of lexicographic products2020
- Author(s)
  Yasushi Hirata and Nobuyuki Kemoto
- Journal Title
  
  Topology Proceedings
  
  Volume: 56 Pages: 219-236
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] C*-, C- and P-embedded subsets in products and the undecidability of a certain property on Nω12020
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology and its Applications
  
  Volume: 283 Pages: 107350-107350
- DOI
  10.1016/j.topol.2020.107350
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] Undecidability of the cardinality of C*-embedded discrete subsets in products of natural numbers2020
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology Proceedings
  
  Volume: 56 Pages: 85-91
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03606
[Journal Article] The D-property of certain products2016
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology and its Applications
  
  Volume: -
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24540147
[Journal Article] Separation of diagonal in monotonically normal spaces and their products2015
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Topology and its Applications
  
  Volume: -
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24540147
[Journal Article] Products of monotonically normal spaces with various special factors2014
- Author(s)
  Yasushi Hirata, Nobuyuki Kemoto and Yukinobu Yajima
- Journal Title
  
  Topology and its Applications
  
  Volume: 164 Pages: 45-86
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24540147
[Journal Article] The sup=max problem for the extent of generalized metric spaces2013
- Author(s)
  Yasushi Hirata and Yukinobu Yajima
- Journal Title
  
  Commentations Mathematicae Universitatis Carolinae
  
  Volume: 54 Pages: 245-257
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540147
[Journal Article] Orthocompactness versus Normality in hyperspaces2012
- Author(s)
  Yasushi Hirata and Nobuyuki Kemoto
- Journal Title
  
  Topology and Appl
  
  Volume: 159 Pages: 1169-1176
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540149
[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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540149
[Journal Article] Orderability of subspaces of well-orderable spaces2010
- Author(s)
  Yasushi Hirata, Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications 157巻
  
  Pages: 127-135
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] Orderability of subspaces of well-orderable topological spaces2010
- Author(s)
  Yasushi Hirata, Nobuyuki Kemoto
- Journal Title
  
  Thpology and its Applications 157
  
  Pages: 127-135
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] Orderability of subspaces of well-orderable spaces2010
- Author(s)
  Yasushi Hirata, Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications
  
  Volume: 157 Pages: 127-135
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] The collectionwise Hausdorff property of products of two or three subspaces of ordinals2009
- Author(s)
  Yasushi Hirata
- Journal Title
  
  Houston Journal of Mathematics 35巻
  
  Pages: 891-901
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] The collectionwise Hausdorff property of products of two or three subspaces of ordinals2009
- Author(s)
  Yasushi Hirata
- Journal Title
  
  Houston Journal of Mathematics 35
  
  Pages: 891-901
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] Orthocompactness versus normality in hyperspaces
- Author(s)
  Yasusbi Hirata, Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications
  
  Volume: (To appear 掲載確定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Journal Article] Orthocompactness versus normality in hyperspaces
- Author(s)
  Yasushi Hirata, Nobuyuki Kemoto
- Journal Title
  
  Topology and its Applications (掲載決定済)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540142
[Presentation] 距離空間との積における弱いD-空間性2024
- Author(s)
  平田康史, 矢島幸信
- Organizer
  日本数学会2024年度年会(トポロジー)
- Data Source
  KAKENHI-PROJECT-23K03206
[Presentation] 無限積空間における弱いD-空間性2024
- Author(s)
  平田康史, 矢島幸信
- Organizer
  日本数学会2024年度年会(トポロジー)
- Data Source
  KAKENHI-PROJECT-23K03206
[Presentation] 順序数の積の部分空間における弱いパラコンパクト性2023
- Author(s)
  平田康史, 家本宣幸, 矢島幸信
- Organizer
  2023年度ジェネラルトポロジーシンポジウム
- Data Source
  KAKENHI-PROJECT-23K03206
[Presentation] 順序数の積の部分空間における可算パラコンパクト性と閉離散部分集合のC*-埋め込み2023
- Author(s)
  平田康史，家本宣幸, 矢島幸信
- Organizer
  日本数学会2023年度秋季総合分科会 (数学基礎論および歴史)
- Data Source
  KAKENHI-PROJECT-23K03206
[Presentation] Undecidability for the extent of products of monotonically normal spaces2022
- Author(s)
  平田康史, 矢島幸信
- Organizer
  日本数学会2022年度年会
- Data Source
  KAKENHI-PROJECT-19K03606
[Presentation] 辞書式順序積の類似性と相違性2019
- Author(s)
  平田康史・家本宣幸
- Organizer
  2019年度ジェネラルトポロジーシンポジウム
- Data Source
  KAKENHI-PROJECT-19K03606
[Presentation] 順序数の積空間の閉長方形のC*-埋め込み性2019
- Author(s)
  平田　康史，矢島　幸信
- Organizer
  RIMS研究集会 (一般位相幾何学の発展と諸分野との連携)
- Data Source
  KAKENHI-PROJECT-19K03606
[Presentation] On the D-property of certain products2014
- Author(s)
  平田康史，矢島幸信
- Organizer
  RIMS研究集会「集合論的・幾何学的トポロジーと種々の分野の交流」
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2014-10-24
- Data Source
  KAKENHI-PROJECT-24540147
[Presentation] 無限積空間におけるD-空間性2014
- Author(s)
  平田康史，矢島幸信
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  広島大学
- Year and Date
  2014-09-25
- Data Source
  KAKENHI-PROJECT-24540147
[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
- Data Source
  KAKENHI-PROJECT-21540149
[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
- Data Source
  KAKENHI-PROJECT-21540149
[Presentation] 順序数の積の位相的性質2010
- Author(s)
  平田康史
- Organizer
  第57回トポロジーシンポジウム
- Place of Presentation
  さん太ホール
- Year and Date
  2010-08-14
- Data Source
  KAKENHI-PROJECT-20540142
[Presentation] 順序数の積の位相的性質2010
- Author(s)
  平田康史
- Organizer
  第57回トポロジーシンポジウム
- Place of Presentation
  さん太ホール, 岡山
- Year and Date
  2010-08-14
- Data Source
  KAKENHI-PROJECT-20540142

1. YAJIMA Yukinobu (10142548)

# of Collaborated Projects: 2 results

# of Collaborated Products: 6 results
2. KEMOTO Nobuyuki (70161825)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
3. ABE Yoshihiro (10159452)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. USUBA Toshimichi (10513632)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. KAMO Shizuo (30128764)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. SHIOYAMA Sahiro (30251028)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. SAKAI Masami (60215598)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Hirata Yasushi 平田 康史

平田 康史 ヒラタ ヤスシ

HIRATA Yasushi 平田 康史

HIRATAYA Sushi 平田 康史

Research Projects

Research Products

Co-Researchers

単調正規空間の積空間におけるZFCで決定不可能な命題の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study of C*-, C-, P-embeddings in products of monotonically normal spacesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

The set-theoretic study for the products with a monotonical normal factor in terms of stationary sets

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

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

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Infinite combinatorial principles and compact cardinals

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Cardinal functions on lexicographic products2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Equalities for the extent of infinite products and Σ-products2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Inequality and equality for the extent of products with a special factor2022

Author(s)

Journal Title

Data Source

[Journal Article] The weight of lexicographic products2020

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] A characterization of the countable paracompactness for products of ordinals2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A characterization of paracompactness of lexicographic products2020

Author(s)

Journal Title

Data Source

[Journal Article] C*-, C- and P-embedded subsets in products and the undecidability of a certain property on Nω12020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Undecidability of the cardinality of C*-embedded discrete subsets in products of natural numbers2020

Author(s)

Journal Title

Data Source

[Journal Article] The D-property of certain products2016

Author(s)

Journal Title

Data Source

[Journal Article] Separation of diagonal in monotonically normal spaces and their products2015

Hirata Yasushi 平田康史

平田康史ヒラタヤスシ

HIRATA Yasushi 平田康史

HIRATAYA Sushi 平田康史