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Charaterization of the notion of logical constant via proof-theoretic methods

Research Project

Project/Area Number 18K00036
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 01010:Philosophy and ethics-related
Research InstitutionKanazawa University

Principal Investigator

Kurokawa Hidenori  金沢大学, GS教育系, 准教授 (30710230)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Keywords論理定項 / 証明論的意味論 / 反映原理 / シークエント計算 / 非古典論理 / クライゼル / informal rigour / 竹内外史 / 構成の理論 / 構成的数学 / クライゼル-グッドマンのパラドックス / nested sequents / labelled sequents / 証明論 / Stability / 直観主義論理 / 直観主義解析学 / 非形式的厳密さ / 論理的帰結 / 完全性定理 / 連続体仮説 / ラベル付きシークエント計算 / モデル論的帰結関係 / 非可述的 / logical constant / nested sequent / Belnap's criteria / stability / DoI / impredicativity / squeezing argument / logical consequence / ネステッド・シークエント
Outline of Final Research Achievements

We can summarize the outline of the main research achievements based on this grant as follows. First, we gave a characterization of the notion of logical constant in a proof-theoretic manner in the style of "the principle of reflection", by using a framework of certain generalized sequent calculi (in particular, nested sequents). We have justified the idea by proving the cut-elimination theorems for the sequent calculi. In relation to these results, we have also proven the cut-elimination theorems for a whole bunch of generalized sequent calculi for various non-classical logics. Secondly, we gave a systematic interpretation and clarification of Kreisel's methodological concept called "informal rigour." Informal rigour was introduced in order to understand the relationship between logical and mathematical concepts (including logical constants) in a formalized system and their informal counterparts, which we usually understand by using natural languages.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果の学術的意義の一つは「論理定項とは何か」という論理学の哲学に関する根本問題の一つに証明論の立場から一定の解答を与えたということである。もう一つはその解答を得る中で関連したいくつかの論理体系に関して、証明論の基本定理であるカット除去定理という純粋に技術的(つまり数学的)な結果を得ることができたことである。また、クライゼルの「非形式的厳密さ」の概念の探究により、「形式的であるとはどのようなことか」という数理論理学の根本問題への解答を与えることに一定の貢献することができた。社会的意義としては、計算機科学での研究方法に間接的に影響を及ぼすという形での当該分野の技術的発展への貢献がある。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (41 results)

All 2023 2022 2020 2019 2018 Other

All Int'l Joint Research (18 results) Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results) Presentation (15 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Paris I(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Lisbon(ポルトガル)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] The University of Warick(英国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] The University of Paris I(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] The University of Lisbon(ポルトガル)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Paris I, Pantheon-Sorbonne(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Federal University of ABC(ブラジル)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Paris I Pantheon Sorbonne(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] the Federal University of ABC (UFABC)(ブラジル)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] The University of Paris I(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] UFABC(ブラジル)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] The University of Helsinki(フィンランド)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] The University of Warwick(英国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Warwick(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Paris I(フランス)

    • Related Report
      2018 Research-status Report
  • [Journal Article] ゲーデルの論理学と<狂気>(書評「ゲーデルの悪霊たち」)2022

    • Author(s)
      黒川英徳
    • Journal Title

      数学セミナー

      Volume: 通巻724号 Pages: 90-90

    • Related Report
      2021 Research-status Report
  • [Journal Article] Resource sharing linear logic2020

    • Author(s)
      Hidenori Kurokawa, Hirohiko Kushida
    • Journal Title

      Journal of Logic and Computation

      Volume: 30 Issue: 1 Pages: 295-319

    • DOI

      10.1093/logcom/exaa013

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Takeuti's early view of the concept of set2020

    • Author(s)
      Hidenori Kurokawa
    • Journal Title

      Springer Proceedings of Mathematics and Statistics

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the semantic concept of logical consequence2020

    • Author(s)
      Hidenori Kurokawa
    • Journal Title

      Lecture Notes in Artificial Intelligence

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] 「完全性定理再訪」2019

    • Author(s)
      黒川英徳
    • Journal Title

      日本数学会2019年度秋季総合分科会数学基礎論及び歴史分科会アブストラクト

      Volume: - Pages: 57-69

    • Related Report
      2019 Research-status Report
  • [Journal Article] On the semantic concept of logical consequence2019

    • Author(s)
      Hidenori Kurokawa
    • Journal Title

      Electronic proceedings of LENLS (logic and engineering of natural language semantics) 19 in the JSAI International Symposia on AI (JSAI-isAI2019)

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Belnap's criteria for logical constants and the principle of reflection2019

    • Author(s)
      Hidenori Kurokawa
    • Journal Title

      Proceedings of the 41st International Wittgenstein Symposium

      Volume: -

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Squeezing reals2023

    • Author(s)
      黒川英徳
    • Organizer
      日本科学哲学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Takeuti’s view of a proof-theoretic analysis of the concept of set2023

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Mini-workshop at IHPST (The University of Paris, Pantheon-Sorbonne)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] On the methodology of informal rigour: applications to the concept of “system”?2022

    • Author(s)
      黒川英徳
    • Organizer
      科学基礎論学会 シンポジウム 2022 年度総会と講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Takeuti’s view of a proof-theoretic analysis of the concept of set2022

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Proofs, Computation and Meaning The University of Tubingen (on-line)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] “On the Methodology of Informal Rigour: Set Theory, Semantics, and Intuitionism”2020

    • Author(s)
      Walter Dean and Hidenori Kurokawa
    • Organizer
      Midwest PhilMath Workshop (University of Notre Dame)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Labelled sequent calculi for relevant logics2020

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Fourth Workshop on Mathematical Logic and its Applications (JAIST)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 完全性定理再訪2019

    • Author(s)
      黒川英徳
    • Organizer
      日本数学会 2019年秋季総合分科会 数学基礎論および歴史分科会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] On Takeuti's view of the concept of set2019

    • Author(s)
      Hidneori Kurokawa
    • Organizer
      The congress of logic, methodology and philosophy of science and technology
    • Related Report
      2019 Research-status Report
  • [Presentation] On the semantic concept of logical consequence2019

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      The workshop of logic and engineering of natural language semantics (LENLS) 19
    • Related Report
      2019 Research-status Report
  • [Presentation] Stability in sequent calculus2019

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Seminar in logic and philosophy of mathematics
    • Related Report
      2019 Research-status Report
  • [Presentation] Stability in sequent calculus2019

    • Author(s)
      Hidenori Kurokawa, Alberto Naibo
    • Organizer
      The third conference on proof-theoretic semantics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] On Takeuti's view of the concept of set2018

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Workshop in philosophical logic and philosophy of logic
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On Takeuti's view of the concept of set2018

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      Symposium on advances in mathematical logic (SAML) 2018 Takeuti Memorial Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] LKのカット消去定理2018

    • Author(s)
      黒川英徳
    • Organizer
      数学基礎論サマースクール
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Belnap's criteria of logical constants and the principle of reflection2018

    • Author(s)
      Hidenori Kurokawa
    • Organizer
      The 41st International Wittgenstein Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Remarks] On the methodology of informal rigour

    • URL

      https://arxiv.org/abs/2104.14887

    • Related Report
      2020 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2025-01-30  

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