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ゲンツェンの証明論的手法を用いたブラウワーの知識論および言語論の再構築

Research Project

Project/Area Number 16J04925
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Philosophy/Ethics
Research InstitutionNagoya University

Principal Investigator

高橋 優太  名古屋大学, 情報学研究科, 特別研究員(PD)

Project Period (FY) 2016-04-22 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords論理学の哲学 / 数学の哲学 / 数学基礎論 / 数理論理学 / 証明論的意味論 / 情報の哲学 / 知識の哲学 / 言語の哲学 / 論理学
Outline of Annual Research Achievements

本研究課題は、現代論理学の一分野であるゲンツェン的証明論を用いて、ブラウワーによる知識論・言語論を発展させ、知識および言語を巡る数理哲学上の問題にアプローチすることである。最終年度となる本年度は次の研究(1a),(1b),(2),(3)を行なった。
(1)ゲンツェン的証明論についての更なる探究:
(1a)ゲンツェンによる無矛盾性証明の拡張となる解析学の無矛盾性証明のために、竹内外史により導入された順序図形(ordinal diagrams)について、項書換え(term rewriting)の観点から研究を行なった。本研究は慶應義塾大学文学部教授・岡田光弘氏との共同研究で進められた。
(1b)ゲンツェン的証明論の先駆的理論であるヒルベルトのε計算を精査した。特に、アッカーマンによるε計算を用いた算術の無矛盾性証明、および、G・ミンツによるその現代的発展形を詳しく調べた。
(2)ゲンツェン的証明論からブラウワーの知識論・言語論へ:ゲンツェン的証明論とブラウワーの知識論・言語論を結びつけるために、2階直観主義命題論理に対して、ゲンツェン的証明論に基づく意味論である証明論的意味論(proof-theoretic semantics)を構築した。本研究は日本大学商学部准教授・竹村亮氏との共同研究で進められた。
(3)ゲンツェン的証明論によるブラウワーの知識論・言語論の展開:まず、ゲンツェン的な枠組みの中で定式化される局在論理(local logic)を扱うバーワイズおよびセリグマンによるチャンネル理論(channel theory)に着目した。そして、受入研究者である戸田山和久教授との議論を通して、証明行為が担う情報をチャンネル理論でもって表現し、エージェントの認識状態に対してきめの細かい分析を与えるブラウワー的知識モデル・言語モデルを構成するというアイデアが得られた。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (18 results)

All 2019 2018 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (13 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results)

  • [Journal Article] On Quasi Ordinal Diagram Systems2019

    • Author(s)
      Okada Mitsuhiro and Takahashi Yuta
    • Journal Title

      Electronic Proceedings in Theoretical Computer Science

      Volume: 288 Pages: 38-49

    • DOI

      10.4204/eptcs.288.4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Completeness of Second-Order Intuitionistic Propositional Logic with Respect to Phase Semantics for Proof-Terms2018

    • Author(s)
      Yuta Takahashi and Ryo Takemura
    • Journal Title

      Journal of Philosophical Logic

      Volume: - Issue: 3 Pages: 1-18

    • DOI

      10.1007/s10992-018-9484-z

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the Intuitionistic Background of Gentzen's 1935 and 1936 Consistency Proofs and Their Philosophical Aspects2018

    • Author(s)
      Yuta Takahashi
    • Journal Title

      Annals of the Japan Association for Philosophy of Science

      Volume: 27 Issue: 0 Pages: 1-26

    • DOI

      10.4288/jafpos.27.0_1

    • ISSN
      0453-0691, 1884-1228
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contentual and Formal Aspects of Gentzen's Consistency Proofs2017

    • Author(s)
      Ryota Akiyoshi and Yuta Takahashi
    • Journal Title

      Philosophical Logic: Current Trends in Asia

      Volume: -- Pages: 95-137

    • DOI

      10.1007/978-981-10-6355-8_6

    • ISBN
      9789811063541, 9789811063558
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Philosophical Significance of Gentzen’s 1935 Consistency Proof for First-Order Arithmetic:2016

    • Author(s)
      高橋優太
    • Journal Title

      Kagaku tetsugaku

      Volume: 49 Issue: 1 Pages: 49-66

    • DOI

      10.4216/jpssj.49.1-49

    • NAID

      130005279438

    • ISSN
      0289-3428, 1883-6461
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] On a disagreement about the finiteness of Gentzen's 1935 consistency proof for first-order arithmetic2019

    • Author(s)
      Yuta Takahashi
    • Organizer
      Workshop "Norm, Rule and Disagreement"
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 証明図の集合から意味論をつくる2018

    • Author(s)
      高橋優太
    • Organizer
      日本論理哲学会第22回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Phase Semantic Investigation into Proof-terms of Second-order Intuitionistic Propositional Logic2018

    • Author(s)
      Yuta Takahashi
    • Organizer
      2nd Nagoya Meta-Philosophy Workshop
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒルベルトのε計算2018

    • Author(s)
      高橋優太
    • Organizer
      数学基礎論サマースクール2018:証明論,特に算術の無矛盾性証明
    • Related Report
      2018 Annual Research Report
  • [Presentation] On quasi ordinal diagram systems2018

    • Author(s)
      Mitsuhiro Okada and Yuta Takahashi
    • Organizer
      TERMGRAPH 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ordinal Diagrams and Well-Quasi-Orderings (preliminary report)2018

    • Author(s)
      Mitsuhiro Okada and Yuta Takahashi
    • Organizer
      French-Japanese Workshop "Philosophy of Logic and Mathematics" with special focuses on "Philosophy of Proofs" and the Study of Euclid's Elements
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase Semantics as Proof-Theoretic Semantics2017

    • Author(s)
      Yuta Takahashi
    • Organizer
      French-Japanese Workshop “Philosophy of logic and Mathematics―Towards Philosophy of Proofs”
    • Place of Presentation
      Keio University
    • Year and Date
      2017-01-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 数学的推論と論理的推論との区別に関するデトレフセン・ポアンカレ説について2017

    • Author(s)
      高橋 優太
    • Organizer
      日本論理哲学会第21回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ゲンツェンによる算術の無矛盾性証明とヒルベルト・ブラウワー論争2017

    • Author(s)
      高橋 優太
    • Organizer
      数理哲学史夏期合宿セミナー
    • Related Report
      2017 Annual Research Report
  • [Presentation] A Proof-theoretic Semantics for Disjunction2017

    • Author(s)
      Yuta Takahashi
    • Organizer
      Logic Colloquium 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On Completeness of Second-Order Intuitionistic Propositional Logic and Proof-Theoretic Semantics a la Prawitz2016

    • Author(s)
      Yuta Takahashi and Ryo Takemura
    • Organizer
      Workshop on philosophy of logic: Logic, computation and normativity
    • Place of Presentation
      Universite Paris 1 Pantheon-Sorbonne
    • Year and Date
      2016-11-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Completeness of Second-Order Intuitionistic Propositional Logic with Respect to a Proof-Theoretic Semantics2016

    • Author(s)
      Yuta Takahashi and Ryo Takemura
    • Organizer
      The joint Conference of The 3rd Asian Workshop on Philosophical Logic (AWPL-2016) & The 3rd Taiwan Philosophical Logic Colloquium (TPLC-2016)
    • Place of Presentation
      National Taiwan University
    • Year and Date
      2016-10-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Contentual and Formal Aspect of Gentzen's Consistency Proofs2016

    • Author(s)
      Ryota Akiyoshi and Yuta Takahashi
    • Organizer
      The joint Conference of The 3rd Asian Workshop on Philosophical Logic (AWPL-2016) & The 3rd Taiwan Philosophical Logic Colloquium (TPLC-2016)
    • Place of Presentation
      National Taiwan University
    • Year and Date
      2016-10-05
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-05-17   Modified: 2024-03-26  

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