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2023 Fiscal Year Final Research Report

Applications of forcing axioms and large continuum

Research Project

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Project/Area Number 18K03393
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 12030:Basic mathematics-related
Research InstitutionShizuoka University

Principal Investigator

Yorioka Teruyuki  静岡大学, 理学部, 准教授 (60432192)

Project Period (FY) 2018-04-01 – 2024-03-31
Keywords強制法理論 / 無限組合せ論
Outline of Final Research Achievements

The author presented an application of Aspero-Mota iteration with symmetric markers, and gave an example of Aspero-Mota iteration with symmetric markers which may not be proper when the length of the iteration is longer than omega_2.
The author showed that some forcing notions with side condition method satisfy Y-proper, and showed that Y-Proper Forcing Axiom due to Chodounsky-Zapletal implies Mapping reflection Principle, Weak Culb Guessing, and mho.

Free Research Field

公理的集合論

Academic Significance and Societal Importance of the Research Achievements

集合を形式化することで,その形式化で「ある定理を証明する」ことが定義され,それにより「ある定理はその形式化から証明できない」ことが定式化された.これにより,カントールの連続体仮説をはじめいくつかの数学命題は集合論の形式化から証明も反証もされないことが示されてきた.これは数学に対する見方について問題提起している.本研究はこの問題に一役買うことを目指している.

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Published: 2025-01-30  

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