This paper presents a semantical analysis of the Weak Kleene Logics Kw3 and PWK from the tradition of Bochvar and Halldén. These are three-valued logics in which a formula takes the third value if at least one of its components does. The paper establishes two main results: a characterisation result for the relation of logical con- sequence in PWK – that is, we individuate necessary and sufficient conditions for a set.

This paper discusses three relevant logics that obey Component Homogeneity - a principle that Goddard and Routley introduce in their project of a logic of significance. The paper establishes two main results. First, it establishes a general characterization result for two families of logic that obey Component Homogeneity - that is, we provide a set of necessary and sufficient conditions for their consequence relations. From this, we derive characterization results for S*fde, dS*fde, crossS*fde. Second, the paper establishes complete sequent calculi (...) for S*fde, dS*fde, crossS*fde. Among the other accomplishments of the paper, we generalize the semantics from Bochvar, Hallden, Deutsch and Daniels, we provide a general recipe to define containment logics, we explore the single-premise/single-conclusion fragment of S*fde, dS*fde, crossS*fdeand the connections between crossS*fde and the logic Eq of equality by Epstein. Also, we present S*fde as a relevant logic of meaninglessness that follows the main philosophical tenets of Goddard and Routley, and we briefly examine three further systems that are closely related to our main logics. Finally, we discuss Routley's criticism to containment logic in light of our results, and overview some open issues. (shrink)

In this paper, we extend the expressive power of the logics K3, LP and FDE with anormality operator, which is able to express whether a for-mula is assigned a classical truth value or not. We then establish classical recapture theorems for the resulting logics. Finally, we compare the approach via normality operator with the classical collapse approach devisedby Jc Beall.

In this paper we present BTC, which is a complete logic for branchingtime whose modal operator quantifies over histories and whose temporal operators involve a restricted quantification over histories in a given possible choice. This is a technical novelty, since the operators of the usual logics for branching-time such as CTL express an unrestricted quantification over histories and moments. The value of the apparatus we introduce is connected to those logics of agency that are interpreted on branching-time, as for instance (...) Stit Logics. (shrink)

Supervaluationism holds that the future is undetermined, and as a consequence of this, statements about the future may be neither true nor false. In the present paper, we explore the novel and quite different view that the future is abundant: statements about the future do not lack truth-value, but may instead be glutty, that is both true and false. We will show that (1) the logic resulting from this “abundance of the future” is a non-adjunctive paraconsistent formalism based on subvaluations, (...) which has the virtue that all classical laws are valid in it, while no formula like φ ∧ ¬φ is satisfiable (though both φ and ¬φ may be true in a model); (2) The peculiar behaviour of abundant logical consequence has an illuminating analogy in probability logic; (3) abundance preserves some important features of classical logic (not preserved in supervaluationism) when it comes to express those important retrogradations of truth which are presupposed by the argument de praesenti ad praeteritum. (shrink)

The book is divided into three parts. The first, containing three papers, focuses on the characterization of the central tenets of previii sentism (by Neil McKinnon) and eternalism (by Samuel Baron and Kristie Miller), and on the ‘sceptical stance’ (by Ulrich Meyer), a view to the effect that there is no substantial difference between presentism and eternalism. The second and main section of the book contains three pairs of papers that bring the main problems with presentism to the fore and (...) outlines its defence strategy. Each pair of papers in this section can be read as a discussion between presentists and eternalists, wherein each directly responds to the arguments and objections offered by the other. This is a discussion that is sometimes absent in the literature, or which is at best carried out in a fragmented way. The first two papers of the section deal with the problem of the compatibility of Special Relativity Theory (SRT) and presentism. SRT is often considered to be a theory that contradicts the main tenet of presentism, thereby rendering presentism at odds with one of our most solid scientific theories. Christian Wüthrich’s paper presents arguments for the incompatibility of the two theories (SRT and presentism) within a new framework that includes a discussion of further complications arising from the theory of Qauantum Mechanics. Jonathan Lowe’s paper, by contrast, develops new general arguments against the incompatibility thesis and replies to Wüthrich’s paper. The second pair of papers focuses on the problem that presentists face, in providing grounds for past tensed truths. In the first (by Matthew Davidson), new arguments are provided to defend the idea that the presentist cannot adequately explain how what is now true about the past is grounded, since for the presentist the past is completely devoid of ontological ground. The second paper (by Brian Kierland) takes up the challenge of developing a presentist explanation of past truths, beginning by outlining some existing views in the literature before advancing an original proposal. (shrink)

The problem of future contingents is one of the most ancient and debated puzzles in Western philosophy, and Supervaluationism is, today, one of the most prominent solutions to the problem. Recently, John MacFarlane has carried a well-known criticism to Supervaluationism and put forward a new solution of the problem of future contingents, which is known as Double Time Reference Theory. Here, we compare DTRT with Supervaluationist semantics, and we show that the success of MacFarlane's criticism crucially depends on the expressivity (...) of the language adopted. Once a reasonable expressive power is granted, however, MacFarlane's criticism no longer applies. (shrink)

The paper introduces a probabilistic semantics for the paraconsistent temporal logic Ab presented by the authors in a previous work on future contingents. Probabilistic concepts help framing two possible interpretations of the logic in question - a `subjective' and an `objective' one - and explaining the rationale behind both of them. We also sketch a proof-method for Ab and address some considerations regarding the conceptual appeal of our proposal and its possible future developments.

Temporal aspects dwell both in the world around us and at the core of our experience of it. Reality, thought, and language all seem to be imbibed in temporality at some level or another. It is thus not surprising that philosophers who have to face the problems of understanding time have resorted to tools from different spheres of investigation, and often at the points of overlap of these areas. Metaphysics, philosophy of physics and science in general, philosophy of language, phenomenology, (...) philosophy of mind, the study of perception and cognition, but also anthropology, sociology, and history of culture, art, and ideas all contain theories and reflections that are crucial to our understanding and experience of time. Many recent debates in analytic philosophy have tackled in different ways the question of whether the sensation of the passage of time that seems to characterise our ordinary experience should be understood as reflecting some obje .. (shrink)

In this paper, we approach the problem of classical recapture for LP and K3 by using normality operators. These generalize the consistency and determinedness operators from Logics of Formal Inconsistency and Underterminedness, by expressing, in any many-valued logic, that a given formula has a classical truth value (0 or 1). In particular, in the rst part of the paper we introduce the logics LPe and Ke3 , which extends LP and K3 with normality operators, and we establish a classical recapture (...) result based on the two logics. In the second part of the paper, we compare the approach in terms of normality operators with an established approach to classical recapture, namely minimal inconsistency. Finally, we discuss technical issues connecting LPe and Ke3 to the tradition of Logics of Formal Inconsistency and Underterminedness. (shrink)

Supervaluationism holds that the future is undetermined, and as a consequence of this, statements about the future may be neither true nor false. In the present paper, we explore the novel and quite different view that the future is abundant: statements about the future do not lack truth-value, but may instead be glutty, that is both true and false. We will show that the logic resulting from this “abundance of the future” is a non-adjunctive paraconsistent formalism based on subvaluations, which (...) has the virtue that all classical laws are valid in it, while no formula like φ ∧ ¬φ is satisfiable ; The peculiar behaviour of abundant logical consequence has an illuminating analogy in probability logic; abundance preserves some important features of classical logic when it comes to express those important retrogradations of truth which are presupposed by the argument de praesenti ad praeteritum. (shrink)

In this article Roberto Balzani, the mayor of Forlì, remembers Roberto Ruffilli, 25 years after his murder. The remembrance reconstructs the steps of his academic career and of his political commitment. Ruffilli graduated at the Catholic University of Milan; his researches in contemporary history placed him in an original position if compared with the Italian studies of the time. The constant attention towards the history of administration and the transformations of the state is the basis on which Ruffilli (...) built his proposals concerning the reform of the insitutional and political system. Balzani concludes the article by affirming that the problems of today aren't any different, that is why Ruffilli's proposals still demonstrate their modernity. (shrink)

La figura de Roberto Navarrete Troncoso fue parte fundamental del Teatro de la Universidad de Concepción, porque contribuyó desde la escena -como actor, director y dramaturgo- en el desarrollo artístico de un elenco que fue motor importante del crecimiento cultural de la ciudad, pero también del país. El artículo se propone levantar su obra del olvido. Para ello analiza Su día gris desde el comentario dramatológico. Se afirma que la obra está en sintonía con una vertiente de la dramaturgia (...) chilena de comienzos de 1960, en que los dramaturgos escenifican la crisis de la vida y valores de una clase media citadina. (shrink)

Fr. Roberto Busa was an Italian Jesuit. In this article his biography will briefly be presented, and some issues raised by his philosophy analyzed. Busa was known as a pioneer of computerized research in the humanities. With the support of IBM he constructed the Index Thomisticus, containing all the works of St. Thomas Aquinas. He believed that expressions of the human can be mathematically modeled. He was the originator of a specific conception of hypertext, in which logically structured programs (...) are able to challenge the general linguistic mode of thinking, in order to make better communication and understanding possible. However, Busa was also con- scious of the general ethical problems involved (Babel), and he hoped that the basic logic of objects could progress towards the truth of being. (shrink)

Este artículo es una breve introducción al opúsculo De veritate propositionis de Roberto Grosseteste , acompañada por una traducción inédita de dicho opúsculo, la primera que por primera vez puede ser leído en español. En él Grosseteste comenta el problema de los futuros contingentes tal y como fue expuesto por Aristóteles en Sobre la interpretación, capítulo IX. Las soluciones de Aristóteles y Grosseteste son similares, aunque la idea de necesidad en Grosseteste está más vinculada a la eternidad que a (...) la temporalidad. (shrink)

El siguiente documento es el resultado de un seminario de investigación sobre novela policíaca latinoamericana reciente, desarrollado en el curso de Novela Latinoamericana, de la Facultad de Filosofía y Letras en la Universidad de La Salle. La fundamentación teórica del seminario tuvo como marco general la Estética de la Recepción fundada en la Escuela de Constanza, Alemania, por Hans Robert Jauss y Wolfgang Iser. Para el caso concreto de la teoría literaria sobre novela policíaca vista en perspectiva sociológica, preferimos apelar (...) a las reflexiones fundacionales de Roger Caillios (1942), las que tiene un sugestivo subtítulo, a saber, La novela policíaca. –De cómo la inteligencia se retira del mundo para consagrarse a sus juegos y de cómo la sociedad introduce sus problemas en éstos. Por otra parte, elegimos la novela corta de Roberto Bolaño, La pista de hielo; y sobre esta elaboramos distintas hipótesis de trabajo, hasta lograr, al juicio de nuestros lectores, una propuesta de teoría literaria, que dé cuenta de la nueva narrativa policíaca. (shrink)

This article underlines and draws attention to critical insights Esposito makes regarding the prospects of rethinking community in a globalized world. Alongside Agamben and Nancy, Esposito challenges the property prejudice found in mainstream models of community. In identity politics, collective identity is converted into a form of communal property. Borders, sovereign territories, and exclusive rights are fiercely defended in the name of communal property. Esposito responds to this problem by developing what I call a “deontological communal contract” where being and (...) ethics are prioritized over having and economics. I examine this new perspective on community in relation to mainstream models found in contemporary and classical social theory. (shrink)

Los discursos sobre el biopoder han marcado buena parte de las discusiones en filosofía política durante la última década. Particularmente, el desarrollo de estos discursos entre diversos filósofos italianos, lo que ha abierto diversas líneas de interpretación sobre el biopoder. A continuación se revisa una de las hipótesis centrales del planteamiento de Roberto Esposito y que justifica gran parte de su trabajo en torno a estos discursos. Esta hipótesis consiste en que la biopolítica mostraría el encuentro léxico entre el (...) vocabulario médico y político que se atestigua durante el siglo XX. Al mismo tiempo el artículo interroga críticamente esta hipótesis de modo que, por una parte, expone el planteamiento de Esposito y sirve como introducción a sus propuestas y, por otra, permite revisar los aportes y límites de esta particular recepción del biopoder. -/- The Biopower discourses have marked much of the discussions on political philosophy during the last decade. In particular, the development of these speechs among several Italian philosophers, which has opened various lines of interpretation of Biopower. Then review one of the central hypothesis of the approach of Roberto Esposito and that justifies much of her work around these discourses. This hypothesis is that the biopolitical would show the lexical meeting between the medical and political vocabulary which is testified during the 20th century. At the same time the article critically interrogates this hypothesis so that, on the one hand, it exposes the approach of Esposito and serves as an introduction to their proposals and, on the other hand, allows to review the contributions and limits of this particular reception of BioPower. (shrink)

Setting out from the work of Jean-Luc Nancy, this article engages with post-Heideggerian thought on community, seeking to bring out and to enhance its political thrust for contemporary democracies. It shows how Jean-Luc Nancy, Roberto Esposito and Giorgio Agamben, ‘common the political’, that is, how they reconsider politics in light of a fundamental sense of co-existence which clears the ground for social openness, solidarity, plurality and autonomy. It then responds to a series of pertinent objections by further politicizing the (...) post-Heideggerian vision of the common. I set out to translate the ontologies of the common into more concrete political logics by relating them to actual political practices and by joining them to the political theory of hegemony and antagonism set out by Ernesto Laclau and Chantal Mouffe. Their conjunction of the ‘common’ with the antagonistic politics of hegemony is tension-ridden, as they draw from conflicting understandings of ‘the political’, pitting plurality and horizontal relations against division and uneven power. To mitigate that conflict, these two approaches should be situated at different sites of political action, and the hegemonic framework should be recast so as to bring it more into line with horizontalist ‘common’ politics. (shrink)

This article develops the affirmative biopolitics that Roberto Esposito intimates in his trilogy – Communitas, Immunitas and Bı´os. The key to this affirmative biopolitics lies in the relationship between the munus, a form of gift that is the root of communitas and immunitas, and the gift discourse that developed throughout the 20th century. The article expands upon Esposito’s interpretation of four theoretical sources that are crucial to his biopolitical perspective: Mauss and the gift-exchange tradition; Hobbes’s social contract theory, which (...) Esposito presents as the anti-gift that founded modernity’s thanatopolitical ‘immunization paradigm’; Bataille’s dangerous concept of sacrifice, which gestures toward an affirmative biopolitical community; and, finally, Jean-Luc Nancy’s essay, L’Intrus, which reflects on the near-decade Nancy lived as the recipient of the gift of a transplanted heart. This discussion of Mauss, Hobbes and Bataille is used to further develop Esposito’s interpretation of L’Intrus in a manner that supports his conception of an affirmative biopolitics ‘of, not over, life’. (shrink)

Intended both as an introduction to the thought of the Italian philosopher Roberto Esposito and as a mapping of current biopolitical practice, this essay traces the contributions and the limits of recent Italian contributions to the discussion of biopolitics. The essay offers a summary of Esposito's insight into the relation of community and immunity and compares his thinking to other philosophers who take immunity as their object of study . Campbell goes on to read Esposito's privileging of bios in (...) the light of Giorgio Agamben's emphasis on zōē, while making reference as well to Antonio Negri and Michael Hardt's understanding of biopower. He concludes by arguing that the stakes of Esposito's analysis for an affirmative biopolitics concern fundamentally the nature of community and its opening to all life forms as bios. (shrink)

book review: Sylvain Lévi, "La dottrina del sacrificio nei Brāhmaṇa. Con tre saggi di Roberto Calasso, Charles Malamoud e Louis Renou", traduzione di Silvia D’Intino. Adelphi, Milano 2009, 224 pp.

The subject of this paper is objectivity from Kant's point of view: or better, my own perspective on Kant's perspective on objectivity. More precisely, I want to draw attention to some aspects of the latter, which I believe are too narrow and must be widened before we can benefit from a Kantian approach today.

Roberto Frega’s Practice, Judgement, and the Challenge of Moral and Political Disagreement is exegetically, as well as systematically, ambitious: it explores several key texts of Charles Peirce and John Dewey in order to develop a pragmatist conception of practical rationality in the context of contemporary moral and political philosophy. Frega’s book differs from other recent comparable contributions, such as those of Cheryl Misak, Eric MacGilvray, and Robert Talisse, by drawing most heavily on Dewey’s works. Yet, similar to Misak, MacGilvray (...) and Talisse, Frega puts pragmatism to the test by applying it to deep moral disagreements in modern societies and does so without relying on facts about American cultural .. (shrink)

This interview ranges across a number of topics relevant to Roberto Marchesini’s thought: the history and philosophy of ethology and entomology; zooanthropology and animal culture; philosophical ethology and philosophical anthropology; animal studies; and animals in laboratories, in the field, on farms, and in household/urban settings. It touches on thinkers including Margherita Hack, Giorgio Celli, Donna Haraway, Giorgio Agamben, Roberto Esposito, Charles Darwin, and Jean-Baptiste Lamarck.

Resumen: El presente estudio intenta demostrar que mediante la novela Los sinsabores del verdadero policía, Roberto Bolaño construye una alegoría de las fisuras que se provocan en las tramas simbólicas de la geografía global mediante la figura de su protagonista Oscar Amalfitano. A partir de este personaje en constante tránsito por distintos territorios, el autor deja en evidencia la situación diaspórica de un sujeto que representa el conflicto de aquellos individuos que traspasan las fronteras establecidas en la lógica del (...) mapa trazado por Occidente, constituyendo así una transgresión de la propia configuración identitaria nacional. Desde este enfoque, se propone la figura de Amalfitano como el sujeto que deconstruye la idea eurocéntrica de la “rosa de los vientos” y permite apropiarse de esta misma noción para generar un juego casi “archimboldiano”: el origen de una “rosa ilimitada de los vientos”.: The present study attempts to show that through the novel Los sinsabores del verdadero policía, Roberto Bolaño constructs an allegory of the cracks that are caused in the symbolic frame of global geography through the figure of its protagonist, Oscar Amalfitano. From this character in constant transit through other territories, the author shows clearly the diasporic situation of a subject that represents the conflict of individuals who cross borders established in the logic of the map drawn by the West, thus constituting a violation of the configuration of national identity itself. In this approach, the figure of Amalfitano as the subject that deconstructs the Eurocentric idea of wind rose and allows the appropriation of this notion to generate an almost "archimboldiano" game: the origin of the the unlimited wind rose. (shrink)

Roberto Esposito has extended the deconstructive theory of the gift into political philosophy, theorizing the gift as the transcendental form of political obligation. In Esposito's philosophy of communitas, the munus consists of the single obligation to give, a logic of donors without receivers, yet it simultaneously establishes relations of reciprocity, mutuality, debt and gratitude. I argue that that indebtedness and reciprocity are not logically possible in a gift system where donors are bound by the single obligation to give, as (...) the donor has no other and the gift no recipient. These inconsistencies may be addressed by distinguishing two forms of gift in communitas: the impersonal gift characterized solely by the obligation to give to the gods/communitas and the reciprocal gift characterized by the obligations to give, receive and return the gift. Esposito's philosophy of communitas would additionally be strengthened by conceptualizing symbolic practices, specifically collective representations, as intrinsic to the munus. As impersonal gift, the munus is a symbolic practice through which the members of communitas represent to themselves their being-in-common. The munus operates as a vertical relation of expenditure made possible by the collective representation of the political we. The reciprocal gift, in contrast, constitutes differentiated social ties and networks: the being-in-difference of communal life. The distinction between the impersonal and the reciprocal gift gives rise to a minimal division between the political and the communal within the transcendental structure of communitas. (shrink)

In this survey of Roberto Esposito's thought, Bonito Oliva reflects upon the stakes of reading biopolitics in an immunitary key. After sketching the features of a "fundamental crisis in the sense of coexistence," the author, moving from ancient to modern philosophy, emphasizes the centrality of fear in Esposito's understanding of the origins of community. The importance of fear explains in part the intrinsic relation community has to immunity for Esposito, in which immunity is figured primarily as a negative form (...) of community. In the essay's closing pages, the author shows how deeply immunity informs Esposito's understanding of contemporary biopolitics. She goes on to note Esposito's indebtedness to Hegel, especially with regard to the negative, and echoes Esposito's and Deleuze's own calls for the construction of "an immanent norm of life.". (shrink)

Roberto Pinzani has written a closely-argued, highly original, valuable but difficult book. The Problem of Universals, indeed, is—and has been for nearly two centuries—the most frequently treated topic in medieval philosophy, and solutions to it proposed by two of the philosophers discussed here, Boethius and Abelard, have been examined countless times. But no one has before tried to cover the whole period, from circa 500 to circa 1150, looking in detail at a whole variety of writers. Moreover, what Pinzani (...) has to say even about Boethius and Abelard is new.After a chapter setting out the problem, as he understands it, and looking especially at predication in Aristotle, Pinzani goes on to Boethius and then the... (shrink)