哲学者・古在由重がひとりの同時代人として、戦争に突き進み拡大する戦中、そして平和と民主主義を希求する戦後のなかで、何を学び、考え、仲間たちとどう交遊・談話し、どう生き、闘ったか。膨大な「古在由重文庫」 (藤沢市湘南大庭市民図書館所蔵)―古在の蔵書・著作はもちろん、原稿メモ、講義テープ、日記・手帳、書簡、新聞スクラップなど―ならびに関係者の著作・文章を渉猟し、さらに多数の人々の聞き取りなど六年をかけて 取材・執筆し、時代に正面から立ち向かった哲学者の実像に迫る力作。.

ウィトゲンシュタインの言語ゲームと龍樹の空思想を軸に、無明=実在論を反実在論に転ずれば、仏教思想は相貌を一変し、和辻哲郎の説く「縁起‐内‐存在」の倫理の哲学史的意義も鮮明になる。本書の透徹した言葉を熟 読玩味するときひらかれる新しい世界像にあなたは驚くに違いない。.

dai 1-kan. Ningen, kyōiku ga umarekawaru tame -- dai 2-kan. Ningen to no deai, kyōiku to no deai -- dai 3 kan. Ningenrashiku naru tedate -- dai 4-kan. Jinrui no kibō, osanago -- dai 5-kan. Shishū, ushinawareta kisetsu o motomete -- dai 6-kan. Aru mazushiki shōgai no kiroku -- [7] Kyōiku to kyōikugaku.

A proof is given for the theorem that at least one bound state exists in a one-dimensional attractive potential however weak it may be. The proof is constructive in that it provides a method to explicitly solve the eigenvalue problem for the eigenvalues as well as the eigenfunctions. The method is well suited to precise numerical calculations.

敗戦、そして戸坂獄死から70年。1930年代、反戦運動が特高警察に根こそぎ弾圧されていくなかで、6年間にわたってしたたかに抵抗を続けた、世界に例のない文化組織「唯物論研究会」。戸坂潤をはじめ、この唯研 に集う若き知識人たちは、ファシズムが吹き荒れる下でも、人生を楽しみ、仲間と交わり、好戦イデオロギーに抗い続け、のちに戦後の民主主義運動の芽となっていった。.

現代を生き抜くための武器としての哲学を、西野カナ、ミスチル、いきものがかり等Jポップの歌詞を題材に、気鋭の哲学者が説く。.

We investigate how weak square principles are denied by Chang’s Conjecture and its generalizations. Among other things we prove that Chang’s Conjecture does not imply the failure of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\square_{\omega_1, 2}}$$\end{document}, i.e. Chang’s Conjecture is consistent with \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\square_{\omega_1, 2}}$$\end{document}.

The primary objective of this anthology is to make intergenerational justice an issue for intercultural philosophy, and, conversely, to allow the latter to enrich the former. In times of large-scale environmental destabilization, fair- ness between generations is an urgent issue of justice across time, but it is also a global issue of justice across geographical and nation-state borders. This means that the future generations envisioned by the currently living also cross these borders. Thus, different philosophical cultures and traditions of thought (...) should converse to re ect on what is fair to future people. In the remainder of this introduction, we will detail these claims and give an overview of the volume’s chapters. (shrink)

Minami–Sakai :883–898, 2016) investigated the cofinal types of the Katětov and the Katětov–Blass orders on the family of all \ ideals. In this paper we discuss these orders on analytic P-ideals and Borel ideals. We prove the following:The family of all analytic P-ideals has the largest element with respect to the Katětov and the Katětov–Blass orders.The family of all Borel ideals is countably upward directed with respect to the Katětov and the Katětov–Blass orders. In the course of the proof of (...) the latter result, we also prove that for any analytic ideal \ there is a Borel ideal \ with \. (shrink)

In this paper, we show within ${\mathsf{RCA}_0}$ that both the Jordan curve theorem and the Schönflies theorem are equivalent to weak König’s lemma. Within ${\mathsf {WKL}_0}$ , we prove the Jordan curve theorem using an argument of non-standard analysis based on the fact that every countable non-standard model of ${\mathsf {WKL}_0}$ has a proper initial part that is isomorphic to itself (Tanaka in Math Logic Q 43:396–400, 1997).

We study the relationship between the semistationary reflection principle and stationary reflection principles. We show that for all regular cardinals Λ ≥ ω₂ the semistationary reflection principle in the space [Λ](1) implies that every stationary subset of $E_{\omega}^{\lambda}\coloneq \{\alpha \in \lambda \,|\,{\rm cf}(\alpha)=\omega \}$ reflects. We also show that for all cardinals Λ ≥ ω₃ the semistationary reflection principle in [Λ](1) does not imply the stationary reflection principle in [Λ](1).

In this paper, we show that equation image is a equation image-conservative extension of BΣ1 + exp, thus it does not imply IΣ1.

We investigate the reverse-mathematical status of several theorems to the effect that the natural number system is second-order categorical. One of our results is as follows. Define a system to be a triple A,i,f such that A is a set and i∈A and f:A→A. A subset X⊆A is said to be inductive if i∈X and ∀a ∈X). The system A,i,f is said to be inductive if the only inductive subset of A is A itself. Define a Peano system to be (...) an inductive system such that f is one-to-one and i∉the range of f. The standard example of a Peano system is N,0,S where N={0,1,2,…,n,…}=the set of natural numbers and S:N→N is given by S=n+1 for all n∈N. Consider the statement that all Peano systems are isomorphic to N,0,S. We prove that this statement is logically equivalent to WKL0 over RCA0⁎ source. From this and similar equivalences we draw some foundational/philosophical consequences. (shrink)