We propose a new information sharing system, named ``BisNet'', which automatically gathers information about the bookmarks stored in users' web browsers and helps the users exchange URIs of possibly interesting web pages with others who have similar interest with them. Being different from other typical agent services that gather and provide information according to pre-registered user profiles, BisNet is expected to share more relevant information because of its use of web browser bookmarks that are actively selected and ordered by many (...) humans. To enhance the relevance of information being shared, we developed a novel algorithm for directory evaluation. This algorithm only looks at the local referential structure between bookmark directories and URIs and calculates for each directory the ``order index'' that represents how well its content URIs are put in order with a focus on specific areas of interest. Then each directory receives new URIs from other related directories with large order indexes. The repetition of such URI exchanges makes the whole directory-URI networks dynamically form directory groups according to the commonness of the URIs they refer to. Our method is unique in that it pays no attention to the actual contents of web pages, and thus is much simpler and faster than other methods based on the result of content analysis. We carried out a field trial that involved 45 people who used a prototype version of BisNet clients. The result indicated that the relevance of shared URIs positively correlated with the ``order index'' of surrounding related directories, demonstrating the effectiveness of the method we proposed. (shrink)

近世後期、日本最古の文献である『古事記』は単なる過去ではなくなり、書かれた時代と「同時的」となって、“神話”であることに対峙する書物となった―本居宣長の前後に登場した田安宗武・上田秋成・橘守部・富士谷 御杖らの記紀解釈を集積体として読み解き、人間と神々のコスモロジーを穿つ。.

正しいから証明できるのか、証明できるから正しいのか。数学にとって証明とは何か、正しさとは何なのかは数学基礎論の根本的な問題である。様相論理を軸とした、証明と真理に関わる数学基礎論の古典的な結果から最先 端の議論までを解説した。.

Drawing on philosophy, history, and critical theory, Unconditional Life introduces a new perspective on the significance of post-war international law developments. The book examines the public discourse regarding technological risk in World War II texts of unconditional surrender, in the World Trade Organisation's EC-Biotech dispute, and in the International Court of Justices' Nuclear Weapons Advisory Opinion. The volume describes international law in terms of its management of, and relation to, the risks associated with technological innovation in war and in trade. (...) It proposes that international law, too, is itself a kind of technology: one intended to manage the material and existential risks inherent in the creation of a new international, postcolonial, political community emerging out of the Second World War. Members of this community are imagined to possess a universal quality: humanness, which itself is underscored by a power of invention. Yoriko Otomo demonstrates how international lawyers' inability to adjudicate questions of large-scale technological risk is due to the competing and intractable claims of international law.Offering a feminist analysis of the political economy that has created this crisis of governance, the book provides a way of understanding the structural inequities that will need to be addressed if international law is to remain a relevant forum for the adjudication of war and trade into the 21st century. (shrink)

The turn of the millennium has witnessed an extraordinary paradox—one identified by Jacques Derrida as a simultaneous increase in violence against nonhuman animals and compassion toward them. This article turns to critical legal theory as well as to recent work by continental philosophers on the human/animal distinction in order to make sense of the ways the paradox manifests in law, arguing that so-called animal welfare laws that appear to be politically progressive are, in fact, iterations of the very violence they (...) purport to redress. What legislation designates as “animal” has neither language nor a recognized image, which not only renders this singular object of law voiceless but also denies that object access to any experience of death, and thus, to life. Through a deconstruction of recently enacted Japanese “animal welfare” legislation, this article proposes that the inability of the legislator to think the animal as having a relation to death belies a deeper struggle at the heart of law itself, to constitute its subjects through language. (shrink)

One of the problems we face in many-valued logic is the difficulty of capturing the intuitive meaning of the connectives introduced through truth tables. At the same time, however, some logics have nice ways to capture the intended meaning of connectives easily, such as four-valued logic studied by Belnap and Dunn. Inspired by Dunn’s discovery, we first describe a mechanical procedure, in expansions of Belnap-Dunn logic, to obtain truth conditions in terms of the behavior of the Truth and the False, (...) which gives us intuitive readings of connectives, out of truth tables. Then, we revisit the notion of functional completeness, which is one of the key notions in many-valued logic, in view of Dunn’s idea. More concretely, we introduce a generalized notion of functional completeness which naturally arises in the spirit of Dunn’s idea, and prove some fundamental results corresponding to the classical results proved by Post and Słupecki. (shrink)

We develop intuitionistic public announcement logic over intuitionistic \({\textbf{K}}\), \({{\textbf{K}}}{{\textbf{T}}}\), \({{\textbf{K}}}{{\textbf{4}}}\), and \({{\textbf{S}}}{{\textbf{4}}}\) with distributed knowledge. We reveal that a recursion axiom for the distributed knowledge is _not_ valid for a frame class discussed in [ 12 ] but valid for the restricted frame class introduced in [ 20, 26 ]. The semantic completeness of the static logics for this restricted frame class is established via the concept of pseudo-model.

The purpose of this paper is to argue that the hybrid formalism fits naturally in the context of David Lewis’s counterfactual logic and that its introduction into this framework is desirable. This hybridization enables us to regard the inference “The pig is Mary; Mary is pregnant; therefore the pig is pregnant” as a process of updating local information (which depends on the given situation) by using global information (independent of the situation). Our hybridization also has the following technical advantages: (i) (...) it preserves the completeness and decidability of Lewis’s logic; (ii) it allows us to characterize the Limit Assumption as a proof-rule with some side-conditions; and (iii) it enables us to establish a general Kripke completeness result by using the proof-rule corresponding to the Limit Assumption. Keywords Counterfactual logic - David Lewis - Contextually definite description - Hybrid logic - Arthur Prior - The limit assumption - Strong completeness - Decidability - Bisimulation - Pure completeness. (shrink)

This paper studies a combined system of intuitionistic and classical propositional logic from proof-theoretic viewpoints. Based on the semantic treatment of Humberstone (J Philos Log 8:171–196, 1979) and del Cerro and Herzig (Frontiers of combining systems: FroCoS, Springer, 1996), a sequent calculus $$\textsf{G}(\textbf{C}+\textbf{J})$$ is proposed. An approximate idea of obtaining $$\textsf{G}(\textbf{C}+\textbf{J})$$ is adding rules for classical implication on top of the intuitionistic multi-succedent sequent calculus by Maehara (Nagoya Math J 7:45–64, 1954). However, in the semantic treatment, some formulas do not (...) satisfy heredity, which leads to the necessity of a restriction on the right rule for intuitionistic implication to keep the soundness of the calculus. The calculus $$\textsf{G}(\textbf{C}+\textbf{J})$$ enjoys cut elimination and Craig interpolation, whose detailed proofs are described in this paper. Cut elimination enables us to show the decidability of this combination both directly and syntactically. This paper also employs a canonical model argument to establish the strong completeness of Hilbert system $$\mathbf {C+J}$$ proposed by del Cerro and Herzig (Frontiers of combining systems: FroCoS, Springer, 1996). (shrink)

Sandrine Sanos's biography of Simone de Beauvoir situates Beauvoir's life and works in historical context, charting how she was enmeshed in most 20h century events and developments from WW2, to Decolonization, the Cold War, Socialist Politics, Feminismâe"as well as topics and ideas of contemporary relevance. Building on recent scholarship, this biography focuses especially on the colonial, transnational, and postcolonial influences that shaped Beauvoir and emphasizes her paradoxical and complicated relationship to politics. Written in accessible and lively prose, the book is (...) divided in 7 chapters and includes lesser-known photos of Beauvoir, as well as primary sources of both historical and contemporary interest. (shrink)

Artemov and Protopopescu introduced a Brouwer-Heyting-Kolmogorov interpretation of knowledge operator to define the intuitionistic epistemic logic IEL, where the axiom A⊃KA\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$A\supset KA$$\end{document} is accepted but the axiom KA⊃A\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$KA\supset A$$\end{document} is refused. This paper studies the notion of distributed knowledge on an expansion of the multi agent variant of IEL. We provide a BHK interpretation of distributed knowledge operator to define the intuitionistic epistemic (...) logic with distributed knowledge DIEL. We construct Hilbert system and cut-free sequent calculus for DIEL\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathbf {DIEL}$$\end{document} and show that they are sound and complete for the intended Kripke semantics. (shrink)

We propose an AI-assisted design concept exploration tool, the “Character Space Construction”. Concept designers explore and articulate the target product aesthetics and semantics in language, which is expressed using “Design Concept Phrases”, that is, compound adjective phrases, and contrasting terms that convey what are not their target design concepts. Designers often utilize this dichotomy technique to communicate the nature of their aesthetic and semantic design concepts with stakeholders, especially in an early design development phase. The CSC assists this designers' cognitive (...) activity by constructing a “Character Space”, which is a semantic quadrant system, in a structured manner. A CS created by designers with the assistance of the CSC enables them to discern and explain their design concepts in contrast with opposing terms. These terms in a CS are retrieved and combined in the CSC by using a knowledge graph. The CSC presents terms and phrases as lists of candidates to users from which users will choose in order to define the target design concept, which is then visualized in a CS. The participants in our experiment, who were in the “arts and design” profession, were given two conditions under which to create DCPs and explain them. One group created and explained the DCPs with the assistance of the proposed CSC, and the other did the same task without this assistance, given the freedom to use any publicly available web search tools instead. The result showed that the group assisted by the CSC indicated their tasks were supported significantly better, especially in exploration, as measured by the Creativity Support Index. (shrink)

Over the last decades, many scholars, feminist and others, have argued that critique must be reframed in different and more ‘productive’ ways because its ‘conventional’ formulation and practice have outlived its usefulness as a conceptual tool. Instead, they have called for affirmation or affirmative critique and a more generative mode of critical engagement in the search for new imaginaries, transformative potentialities and other futures. New feminist materialist thought’s emergence is, we argue, symptomatic of this contemporary intellectual landscape that claims to (...) move beyond critique. While sympathetic with the desire to rethink a form of critique that speaks to the (urgent) politics of the present and the remaking of political imaginaries, we argue that the theoretical gesture to move beyond critique may offer a potentially troubling remapping organised around certain kinds of repression (of the undetermined and ambivalent work of critique) and amnesia (of feminist genealogies and over different feminist projects’ conceptualisation of matter) that yield a politics without politics. (shrink)

This paper deals with two main topics: One is a semantical investigation for a bimodal language with a modal operator \blacksquare associated with the intersection of the accessibility relation R and the inequality ≠. The other is a generalization of some of the former results to general extended languages with modal operators. First, for our language L\sb{\square\blacksquare}, we prove that Segerberg's theorem (equivalence between finite frame property and finite model property) fails and establish both van Benthem-style and Goldblatt-Thomason-style characterizations. We (...) extract the notion of \blacksquare-realizer (a generalization of bulldozing) as an essence from the proofs of our results. Second, we generalize the notion of \blacksquare-realizer and prove quite general versions of these semantical characterization results. The known and previously unknown characterization results for almost all of the languages extended with modal operators already proposed will be immediate corollaries. (shrink)

This study realizes belief/reliability change of a judge in a legal judgment by dynamic epistemic logic. A key feature of DEL is that possibilities in an agent’s belief can be represented by a Kripke model. This study addresses two difficulties in applying DEL to a legal case. First, since there are several methods for constructing a Kripke model, our question is how we can construct the model from a legal case. Second, since this study employs several dynamic operators, our question (...) is how we can decide which operators are to be applied for belief/reliability change of a judge. In order to solve these difficulties, we have implemented a computer system which provides two functions. First, the system can generate a Kripke model from a legal case. Second, the system provides an inconsistency solving algorithm which can automatically perform several operations in order to reduce the effort needed to decide which operators are to be applied. By our implementation, the above questions can be adequately solved. With our analysis method, six legal cases are analyzed to demonstrate our implementation. (shrink)

This paper shows Hilbert system (C+J)-, given by del Cerro and Herzig (1996) is semantically incomplete. This system is proposed as a proof theory for Kripke semantics for a combination of intuitionistic and classical propositional logic, which is obtained by adding the natural semantic clause of classical implication into intuitionistic Kripke semantics. Although Hilbert system (C+J)- contains intuitionistic modus ponens as a rule, it does not contain classical modus ponens. This paper gives an argument ensuring that the system (C+J)- is (...) semantically incomplete because of the absence of classical modus ponens. Our method is based on the logic of paradox, which is a paraconsistent logic proposed by Priest (1979). (shrink)

Intuitionistic epistemic logic by Artemov and Protopopescu (Rev Symb Log 9:266–298, 2016) accepts the axiom “if A, then A is known” (written $$A \supset K A$$ ) in terms of the Brouwer–Heyting–Kolmogorov interpretation. There are two variants of intuitionistic epistemic logic: one with the axiom “ $$KA \supset \lnot \lnot A$$ ” and one without it. The former is called $$\textbf{IEL}$$, and the latter is called $$\textbf{IEL}^{-}$$. The aim of this paper is to study first-order expansions (with equality and function (...) symbols) of these two intuitionistic epistemic logics. We define Hilbert systems with additional axioms called geometric axioms and sequent calculi with the corresponding rules to geometric axioms and prove that they are sound and complete for the intended semantics. We also prove the cut-elimination theorems for both sequent calculi. As a consequence, the disjunction property and existence property are established for the sequent calculi without geometric implications. Finally, we establish that our sequent calculi can also be formulated with admissible structural rules (i.e., in terms of a G3-style sequent calculus). (shrink)

The present contribution shows that a Hilbert-style axiomatization for dynamic logic of relation changers is complete for the standard Kripke semantics not by a well-known rewriting technique but by the idea of an auxiliary semantics studied by van Benthem and Wang et al. A key insight of our auxiliary semantics for dynamic logic of relation changers can be described as: “relation changers are bounded morphisms.” Moreover, we demonstrate that this semantic insight can be used to provide a modular cut-free labelled (...) sequent calculus for the logic in the sense that our calculus can be regarded as a natural expansion of a labelled sequent calculus of iteration-free propositional dynamic logic. (shrink)

Este repertorio registra los artículos sobre Platón que se encuentran en la Hemeroteca de la Biblioteca Central de la Pontificia Universidad Católica del Perú. El listado abarca las publicaciones existentes hasta el primer semestre del año 2000.

L’ouvrage de Sandrine Sanos se propose d’apporter un éclairage nouveau sur l’ultra-droite des années 1930 à partir de l’étude d’un assez large corpus d’écrits émanant de ce segment de l’espace politique. Il revendique, de ce point de vue, une triple originalité. Tout d’abord, dans sa démarche qui consiste à prendre au sérieux la « politique de la littérature » (Jacques Rancière) contenue dans ces écrits : le titre même, The Aesthetics of Hate, renvoie ainsi à la conviction défendue par l’aute...

El derecho humano al medio ambiente sano se inscribe dentro de los derechos llamados de solidaridad, por lo que el alcance de la esfera de titularidad y observancia es colectivo. La innovación de acceso a la justicia del derecho al medio ambiente sano por la vía colectiva, trajo importantes reformas en la Constitución Política de los Estados Unidos Mexicanos y a los ordenamientos jurídicos secundarios, al introducir nuevas figuras y conceptos jurídicos, lo cual rediseñó la culturización de la (...) práctica jurídica en el país y la acción para efectivizar el acceso a la justicia de este derecho. (shrink)

La genealogía de la educación física y el deporte moderno tiene una fundamentación civilizadora y pedagógica, forjada a través de los códigos disciplinares de la moral católica que utilizó el aforismo clásico: Mens sana in corpore sano. En el caso de España, la Contrarreforma utilizó la educación con el propósito de construir y solidificar un Estado católico. Las didácticas utilizadas, caracterizadas por el sentido de la eutrapelia y la emulación, fueron dispositivos que actuaron en el modelamiento de la docilidad (...) corporal y del caballero cristiano. De este modo aparecieron diferentes usos sociales de la corporalidad en la educación, la formación militar, la recreación, el trabajo y la vida religiosa de la gente. De ahí surgió una concepción ética y burguesa que, a través del juego, la emulación y la eutrapelia, cimentó las bases de un capitalismo y una nueva manera de imaginar el mundo. El análisis de esta concepción y sentido de la corporalidad en la Contrarreforma (s. xvi y xvii) es el objeto de estudio del presente trabajo. La metodología se ha basado en el análisis de las principales fuentes primarias, contextualizándolas con trabajos posteriores que aportan una determinada visión hermenéutica al estudio. Se concluye que la educación (del cuerpo) en esta época fue una excusa para promover un ideal nacional, patriótico y de servidumbre a la patria española. (shrink)

Daniel Sanabria Centro de Investigación Mente Cerebro y Comportamiento, Universidad de Granada, España Practicar ejercicio físico de forma regular está … Read More →.