Jean-Pierre Belna se propose d'exposer et de confronter les contributions de Dedekind, Cantor et Frege à la théorie des nombres. Un des points communs aux trois auteurs étudiés dans cet ouvrage est leur tentative, en essayant de définir les entiers naturels, d'achever le processus d'arithmétisation de l'analyse. Weierstrass, par exemple, ne s'était pas réellement intéressé à la définition des nombres entiers. Dans l'introduction de son cours, il tire l'origine de la notion de nombre de la réunion mentale de choses auxquelles (...) on a découvert une propriété commune. Les points de vue de Dedekind, Cantor et Frege sont cependant fondamentalement différents. L'approche de Dedekind est algébrique, celle de Cantor ensembliste et Frege appartient au courant logiciste. Les trois premiers chapitres sont consacrés à l'exposition de leurs travaux. (shrink)

L’étude des processus de production des mathématiques est indissociable de l’analyse des mécanismes de circulation, ne serait-ce qu’un résultat mathématique n’a aucun effet dans la discipline s’il n’est pas relayé, discuté et accepté par diverses communautés. Par l’expression « circulation mathématique », nous entendons circulation de questions, de problèmes, de méthodes, d’explications, d’enseignements, de pratiques, de points de vue, de théorèmes mathématiques ou de métadiscours, qui s’opèr...

The aim of this paper is to shed light on and develop what I call a phenomenological conception of experiential justification. According to this phenomenological conception, certain experiences gain their justificatory force from their distinctive phenomenology. Such an approach closely connects epistemology and philosophy of mind and has recently been proposed by several authors, most notably by Elijah Chudnoff, Ole Koksvik, and James Pryor. At the present time, however, there is no work that contrasts these different versions of PCEJ. This (...) paper not only bridges this gap, but also reveals problems in current versions of PCEJ. Consequently, I argue for a new version of PCEJ that focuses on what is given within experience and not on how what is given pushes me towards believing something. (shrink)

The aim of this paper is twofold. The first is an interpretative one as I wish to provide a detailed account of Husserl’s conception of experiential justification. Here Ideas I and Introduction to Logic and Theory of Knowledge: Lectures 1906/07 will be my main resources. My second aim is to demonstrate the currency and relevance of Husserl’s conception. This means two things: Firstly, I will show that in current debates in analytic epistemology there is a movement sharing with Husserl the (...) basic idea that certain experiences gain their justificatory force simply from their distinctive phenomenal character. Secondly, I shall reveal the benefits of Husserl’s specific version of this view. Thus, one of my aims is to show that debates in current analytic epistemology could profit from adopting certain Husserlian elements. More precisely, I will defend Husserl’s claim that perceptual experiences are justifiers due to their self-giving phenomenal character as opposed to the currently popular view that it is the phenomenology of pushiness that makes them justifiers. To put it differently, what matters is what is originally given within experience and not how you feel about what is given. (shrink)

In his influential paper “Grasping the Third Realm,” John Bengson raises the question of how we can non-accidentally grasp abstract facts. What distinguishes successful intuition from hallucinatory intuition? Bengson answers his “non-accidental relation question” by arguing for a constitutive relationship: The intuited object is a literal constituent of the respective intuition. Now, the problem my contribution centers around is that Bengson’s answer cannot be the end of the story. This is because, as Bar Luzon and Preston Werner have recently pointed (...) out, this answer leads to the follow-up question of why certain intuitional experiences are constituted by the facts, but others are not. My objective is to answer this question by specifying precisely what is epistemically defective about intellectual hallucinations. My result is that, in stark contrast to perception, intellectual hallucinations are epistemically defective in the sense that something is overlooked. In successful intuition, by contrast, all relevant possibilities/scenarios are considered/imagined. This has crucial epistemological implications. In particular, I argue that intuitions exhibiting a certain phenomenology cannot fail to successfully grasp abstract facts. I call this the non-accidental correctness thesis, which constitutes the main thesis of this paper. (shrink)

Solar radiation management (SRM) may help to reduce the negative outcomes of climate change by minimising or reversing global warming. However, many express the worry that SRM may pose a moral hazard, i.e., that information about SRM may lead to a reduction in climate change mitigation efforts. In this paper, we report a large-scale preregistered, money-incentivised, online experiment with a representative US sample (N = 2284). We compare actual behaviour (donations to climate change charities and clicks on climate change petition (...) links) as well as stated preferences (support for a carbon tax and self-reported intentions to reduce emissions) between participants who receive information about SRM with two control groups (a salience control that includes information about climate change generally and a content control that includes information about a different topic). Behavioural choices are made with an earned real-money endowment, and stated preference responses are incentivised via the Bayesian Truth Serum. We fail to find a significant impact of receiving information about SRM and, based on equivalence tests, we provide evidence in favour of the absence of a meaningfully large effect. Our results thus provide evidence for the claim that there is no detectable moral hazard with respect to SRM. [Open access]. (shrink)

In current debates, many philosophers of science have sympathies for the project of introducing a new approach to the scientific realism debate that forges a middle way between traditional forms of scientific realism and anti-realism. One promising approach is perspectivism. Although different proponents of perspectivism differ in their respective characterizations of perspectivism, the common idea is that scientific knowledge is necessarily partial and incomplete. Perspectivism is a new position in current debates but it does have its forerunners. Figures that are (...) typically mentioned in this context include Dewey, Feyerabend, Leibniz, Kant, Kuhn, and Putnam. Interestingly, to my knowledge, there exists no work that discusses similarities to the phenomenological tradition. This is surprising because here one can find systematically similar ideas and even a very similar terminology. It is startling because early modern physics was noticeably influenced by phenomenological ideas. And it is unfortunate because the analysis of perspectival approaches in the phenomenological tradition can help us to achieve a more nuanced understanding of different forms of perspectivism. The main objective of this paper is to show that in the phenomenological tradition one finds a well-elaborated philosophy of science that shares important similarities with current versions of perspectivism. Engaging with the phenomenological tradition is also of systematic value since it helps us to gain a better understanding of the distinctive claims of perspectivism and to distinguish various grades of perspectivism. (shrink)

Des premiers rites baptismaux à la confession moderne, les références au christianisme sont constantes dans l'œuvre de Michel Foucault. Cette constance s'inscrit dans un questionnement philosophique plus large sur notre actualité : comprendre le rapport que nous avons aujourd'hui à nous-mêmes demande de s'interroger sur les actes de vérité que l'Occident a instaurés depuis les premiers siècles chrétiens. Que faut-il dire et manifester de soi pour être transformé dans son être, pardonné, sauvé, jugé ou guéri)? Ce livre propose une étude (...) critique de l'ensemble des lectures chrétiennes de Foucault, avec une attention particulière portée au cours Du gouvernement des vivants. Ni chronologique ni thématique, le parcours suivi espère retrouver la logique d'un travail à la fois philosophique et historique : quand et comment le christianisme a-t-il été constitué par Foucault en objet de recherche, avec quelles pratiques de lecture et quelles conséquences sur l'interprétation)? (shrink)

Quelle politique peut-on faire quand on est un idiot? Loin d'être saugrenue, c'est bien la question qu'on est conduit à se poser inévitablement en lisant l'oeuvre de Gilles Deleuze. L'"idiot" joue, en effet, un rôle incontournable et essentiel dans la philosophie de Deleuze. Il est le personnage conceptuel qui fait tenir cette philosophie dans sa consistance propre. Il se situe à la charnière de l'image de la pensée que le philosophe invoque et suppose plus ou moins implicitement et de la (...) création de concepts qu'il produit explicitement. Aussi, faire de la philosophie, tout comme agir et penser politiquement, c'est toujours une manière de faire l'idiot. Les conséquences de cette approche sont capitales, du fait des questions posées à la réflexion politique classique centrée sur le Droit et l'Etat, du fait aussi des problématiques qui se voient invalidées dans ce champ. La place qui revient au contrôle et au bio-pouvoir, aux zones d'indétermination et aux espaces lisses, permet de prendre une saine distance vis-à-vis de la politique "majoritaire" et de faire apparaître, comme déjà de vieux clichés, bon nombre de thèmes et de concepts revendiqués par les organisations alternatives, mondialistes et subversives récentes. C'est une tout autre idée de la politique, centrée sur les devenirs, que nous invite à méditer la politique deleuzienne de l'idiot. Elle nous ouvre à d'autres espérances, nouvelles, en lien avec un "peuple absent" qui naîtrait avec chaque devenir. (shrink)

D’un colloque à un autre, puis à un autre... En mai 1994, les Archives Henri-Poincaré, qui n’avaient alors que deux ans d’existence, organisaient à Nancy un important colloque dédié à l’œuvre scientifique et philosophique du savant [Greffe, Heinzmann et al. 1996]. En janvier 2012, à l’occasion du centenaire du décès d’Henri Poincaré, le laboratoire inaugurait à Nancy une année marquée par d’innombrables manifestations scientifiques et grand public avec un colloque « Vers une biographie d’Henr...

Animal research suggests that central serotonergic neurons are involved in behavioral suppression, particularly anxiety-related inhibition. The hypothesis linking decreased serotonin transmission to reduced anxiety as the mechanism in the anxiolytic activity of benzodiazepines conflicts with most clinical observations. Serotonin antagonists show no marked capacity to alleviate anxiety. On the other hand, clinical signs of reduced serotonergic transmission (low 5-HIAA levels in the cerebrospinal fluid) are frequently associated with aggressiveness, suicide attempts, and increased anxiety. The target article attempts to reconcile such (...) human and animal findings by investigating whether anxiety reduction or increased impulsivity is more Likely to account for animal behavioral changes associated with decreased serotonergic transmission. The effects of manipulating central serotonin in experimental anxiety paradigms in animals (punishment, extinction, novelty) are reviewed and compared with the effects of antianxiety drugs. Anxiety seems neither necessary nor sufficient to induce control by serotonergic neurons on behavior. Further evidence suggests that behavioral effects of anxiolytics thought to be mediated by decreases in anxiety are not caused by the ability of these drugs to reduce serotonin transmission. Blockade of serotonin transmission, especially at the level of the substantia nigra, results in a shift of behavior toward facilitation of responding. This behavioral shift is particularly marked when there is competition between acting and restraining response tendencies and when obstacles prevent the immediate attainment of an anticipated reward. It is proposed that serotonergic neurons are involved not only in behavioral arousal but also in enabling the organism to arrange or tolerate delay before acting. Decreases in serotonin transmission seem to be associated with the increased performance of behaviors that are usually suppressed, though not necessarily because of the alleviation of anxiety, which might contribute to the suppression. (shrink)

This chapter contains section titled: I The Extended Auction II Working in the Peep Show, Flirting in the Square III Insurance Behind a Veil of Ignorance IV Dworkin's Hybrid Scheme V Four Objections to Dworkin VI Ackerman Generalized VII Not Enough Redistribution? VIII Too Much Redistribution? Acknowledgement.

The conception of social justice presented and defended in Philippe Van Parijs, "Real Freedom for All" entails, among other implication, the justification of an unconditional basic income. It was the subject of seven critical comments that forms issue 22 and part of 23 of ANALYSE & KRITIK. In this article, Van Parijs offers a comprehensive reply.

An introduction to semantics for the general reader. How things mean, from animal communication to music.

Dans La Volonté de savoir, Foucault écrit : "Là où il y a pouvoir, il y a résistance".

We want to highlight the strong link between learning systems such as deep learning neural networks and neutrosophy. The latter is above all a representation considering a neutral state which is at the heart of many phenomena of reality as well as mathematical and information theories. Here, we start from the recent understanding of neural networks, which considers their internal functioning and the learning that characterizes them as based on adapted representations (both of the information to be processed and of (...) the task to be performed) that are in fact optimal compressions. Compression means discriminating the similar and the different between cases by identifying representative characteristics through focusing on the most significant and rejecting of the rest. These three operations of neural processing, learning and compression owe their existence to non-linear treatments which essentially amount to distinguishing a neutral zone between two filtered zones, corresponding to the neutrosophical approach. (shrink)

Peut-on définir un "sens" musical? Quelle est la part d'intuition, de spontanéité, et celle de la technique, des règles, des systèmes dans la création? Pionnier de la musique électroacoustique en temps réel, Philippe Manoury nous fait entrer au coeur du processus de composition, montrant par exemple comment faire interagir les techniques numériques et les instruments acoustiques (y compris la voix) pour créer de nouvelles formes musicales et interroger sans cesse la matière sonore elle-même."--Page 4 of cover.

This chapter introduces time travel into the Star Wars lore. Time travel stories in which the past is changed are in danger of being inconsistent or plagued by paradoxes. In famous time travel stories such as Back to the Future, the protagonist travels to the past, changes the past, and then returns to a present quite different from the one they left. In contemporary philosophy of time, there are three main approaches to this question: presentism, eternalism, and the growing block (...) universe. Time travel works by entering a place, the World Between Worlds, that connects different points in time and space. In terms of modern physics, the portals in the World Between Worlds may be understood as traversable wormholes. The nature of time and the possibility of time travel have attracted and captivated humanity for centuries. (shrink)

Die vorliegende Studie ist die erste umfassende Darstellung, die Kierkegaards Verfahren einer indirekten Mitteilung als hermeneutischen Schl ssel zu seinem Gesamtwerk entfaltet. Erkenntnisleitend ist das philosophische Interesse, die indirekte Mitteilung als Kierkegaards denkerische Methode und als das bestimmende Strukturprinzip seiner Existenzphilosophie zu begreifen. Indirekte Mitteilung meint nicht blo eine u erliche Form maieutischer und existenzieller Kommunikation, sie ist vielmehr zugleich eine Theorie ber die Grenze von Sprache und Begriff. Zudem ist die perspektivisch gebrochene, experimentalphilosophische Methode ein Gegenentwurf zur geschlossenen Form (...) des Systems. Hierin zeigt sich Kierkegaards geschichtliche Zwischenstellung in der Umbruchskonstellation von Idealismus und Moderne: Er st t sich im Ganzen vom Systemdenken Schellings und Hegels ab und weist voraus auf die Experimentalphilosophie Nietzsches und das Differenzdenken Derridas. Die Studie ist in dreierlei Hinsicht strukturiert: Systematisch wird die indirekte Methode als ein gegen sich selbst arbeitendes, prinzipiell unabgeschlossenes Verfahren bestimmt; geschichtlich wird sie vor dem Hintergrund der Tradition der Ironie und weiterer paradoxaler Begriffskonstellationen entfaltet; werkgeschichtlich-exegetisch werden Kierkegaards weit verzweigte Reflexionen ber den Begriff der indirekten Methode rekonstruiert, ihre Praxis und Durchf hrung anhand ausgew hlter Werke exemplarisch herausgearbeitet. (shrink)