El artículo se constituye en una exploración del pensamiento de un escritor, pensador y activista afrocostarricense Dolores Joseph Montout, específicamente en relación con el Caribe. La reconstrucción de sus ideas se basó principalmente en su obra periodística en los años treinta, en The Searchlight y The Atlantic Voice, en los cuales escribió asiduamente sobre sus principales preocupaciones referentes a la población afrocostarricense. Se recuperan tres aspectos fundamentales en su obra: a) sus inquietudes nacionalistas y su lucha por la integración y (...) ciudadanía de los afrodescendientes, b) su relación y controversias con las ideas de Marcus Garvey y la Universal Negro Improvement Association (UNIA) y los ataques producto de su posición y c) la importancia que le brinda a la educación y a la formación intelectual de los jóvenes para el crecimiento de su cultura, por ejemplo, a través delClub Literario Alpha. En las conclusiones, se evidencia lo contradictorio y lo complejo de su pensamiento y de la diversidad y diferencias de la población afrocostarricense entre 1930-1938, sus ideas nacionalistas y patrióticas, así como la importancia de proseguir con este tipo de estudios, tanto del autor como de otros pensadores y pensadoras invisibilizados enla historia del Caribe costarricense. (shrink)

We present a mathematical approach to defeasible reasoning based on arguments. This approach integrates the notion of specificity introduced by Poole and the theory of warrant presented by Pollock. The main contribution of this paper is a precise, well-defined system which exhibits correct behavior when applied to the benchmark examples in the literature. It aims for usability rather than novelty. We prove that an order relation can be introduced among equivalence classes of arguments under the equi-specificity relation. We also prove (...) a theorem that ensures the termination of the process of finding the justified facts. Two more lemmas define a reduced search space for checking specificity. In order to implement the theoretical ideas, the language is restricted to Horn clauses for the evidential context. The language used to represent defeasible rules has been restricted in a similar way. The authors intend this work to unify the various existing approaches to argument-based defeasible reasoning. (shrink)

Over the past decade or so, a new interdisciplinary field has emerged in the ground between, on the one hand, computer science – and artificial intelligence in particular – and, on the other, the area of philosophy concentrating on the language and structure of argument. There are now hundreds of researchers worldwide who would consider themselves a part of this nascent community. Various terms have been proposed for the area, including "Computational Dialectics," "Argumentation Technology," and "Argument-based Computing," but the term (...) that has stuck is simply Argument & Computation. It encompasses several specific strands of research, such as: . the use of theories of argument, and dialectic in particular, in the design and implementation of protocols for multi-agent action and communication; . the application of theories of argument and rhetoric in natural language processing and affective computing; . the use of argument-based structures for autonomous reasoning in artificial intelligence, and in particular, for defeasible reasoning; . computer-supported collaborative argumentation – the implementation of software tools for enabling online argument in domains such as education and e-government. These strands come together to form the core of a research field that covers parts of artificial intelligence (AI), philosophy, linguistics, and cognitive science, but, increasingly, is building an identity of its own. (shrink)

El artículo se constituye en una exploración del pensamiento de un escritor, pensador y activista afrocostarricense Dolores Joseph Montout, específicamente en relación con el Caribe. La reconstrucción de sus ideas se basó principalmente en su obra periodística en los años treinta, en The Searchlight y The AtlanticVoice, en los cuales escribió asiduamente sobre sus principales preocupaciones referentes a la población afrocostarricense. Se recuperan tres aspectos fundamentales en su obra: a) sus inquietudes nacionalistas y su lucha por la integración y ciudadanía (...) de los afrodescendientes, b) su relación y controversias con las ideas de Marcus Garvey y la Universal Negro Improvement Association (UNIA) y los ataques producto de su posición y c) la importancia que le brinda a la educación y a la formación intelectual de los jóvenes para el crecimiento de su cultura, por ejemplo, a través del Club Literario Alpha. En las conclusiones, se evidencia lo contradictorio y lo complejo de su pensamiento y de la diversidad y diferencias de la población afrocostarricense entre 1930-1938, sus ideas nacionalistas y patrióticas, así como la importancia de proseguir con este tipo de estudios, tanto del autor como de otros pensadores y pensadoras invisibilizados en la historia del Caribe costarricense. (shrink)

El artículo reconstruye los intereses lectores y de instrucción obrera, y también los textos escritos por los obreros y obreras a través de Hoja Obrera, periódico de publicación semanal, el cual pertenecía a la Sociedad de Trabajadores, en el período comprendido entre 1909 y 1912. De tal manera, que detalla cuáles fueron los escritores y escritoras leídos, qué textos leyeron, cuáles fueron sus preocupaciones por la instrucción obrera y la lectura, así como quiénes escribían y sobre qué escribían. La metodología (...) se basó en la profundización de Hoja Obrera, entre el 17 de octubre de 1909 y el 8 de abril de 1912, con un total de 94 ejemplares analizados. Se concluye tres aspectos fundamentales: primero, la importancia brindada por los obreros y obreras a la instrucción y a la lectura como medio para fomentar su formación intelectual y poder comprender las condiciones sociales y culturales de la sociedad costarricense; segundo, la influencia de escritores como Émile Zola, Joaquín Dicenta, Victor Hugo, Lev Tolstói, Félix Matos Bernier, entre otros, en el entendimiento de las relaciones humanas; tercero, el aporte de la escritura como una forma de denuncia de estas condiciones, principalmente a través de la poesía como medio de expresión artístico. (shrink)

The meaning that expressions take on particular occasions often depends on the context in ways which seem to transcend its direct effect on context-sensitive parameters. ‘Truth-conditional pragmatics’ is the project of trying to model such semantic flexibility within a compositional truth-conditional framework. Most proposals proceed by radically ‘freeing up’ the compositional operations of language. I argue, however, that the resulting theories are too unconstrained, and predict flexibility in cases where it is not observed. These accounts fall into this position because (...) they rarely, if ever, take advantage of the rich information made available by lexical items. I hold, instead, that lexical items encode both extension and non-extension determining information. Under certain conditions, the non-extension determining information of an expression e can enter into the compositional processes that determine the meaning of more complex expressions which contain e. This paper presents and motivates a set of type-driven compositional operations that can access non-extension determining information and introduce bits of it into the meaning of complex expressions. The resulting multidimensional semantics has the tools to deal with key cases of semantic flexibility in appropriately constrained ways, making it a promising framework to pursue the project of truth-conditional pragmatics. (shrink)

O artigo – desde uma perspectiva da educação como direito humano universal que reconhece a diversidade – realiza um recorrido panorâmico por uma série de dimensões da educação intercultural no ensino superior do Chile, especialmente universitária, discute criticamente a situação atual da interculturalização na universidade – entendida genericamente – e conclui com algumas perguntas que podem orientar pesquisas ou decisões que levem a que o ensino superior considere os direitos indígenas, permita a expressão de sua cultura, promova a interculturalidade, forme (...) os técnicos e profissionais que requerem o desenvolvimento da sociedade e das comunidades e enriqueça a docência e a ciência com outros paradigmas de conhecimento. Desse modo, que reconheça e valide a interculturalidade e os aportes das culturas indígenas a sua identidade, formação e produção de conhecimento. Trata das comunidades e dos estudantes indígenas em geral, mas aprofunda a situação desde o povo mapuche, embasando-se em projetos de pesquisa e desenvolvimento e em experiências em e desde a Região da Araucanía. A proposta se centra na ideia de que o direito à educação, desde a lei e inconstitucionalidade atual, se centra no sistema escolar formal de ensino básico e médio e não considera a educação superior ou a um sistema de educação continuado como direito universal, no qual poderia se especificar uma condição especial aos estudantes indígenas. Por isso, hoje se luta pela igualdade de oportunidades de inclusão entre indígenas e não indígenas. Palavras-chave: Ensino Superior. Interculturalidade. Cultura mapuche. (shrink)

Recent work in formal semantics suggests that the language system includes not only a structure building device, as standardly assumed, but also a natural deductive system which can determine when expressions have trivial truth‐conditions (e.g., are logically true/false) and mark them as unacceptable. This hypothesis, called the ‘logicality of language’, accounts for many acceptability patterns, including systematic restrictions on the distribution of quantifiers. To deal with apparent counter‐examples consisting of acceptable tautologies and contradictions, the logicality of language is often paired (...) with an additional assumption according to which logical forms are radically underspecified: i.e., the language system can see functional terms but is ‘blind’ to open class terms to the extent that different tokens of the same term are treated as if independent. This conception of logical form has profound implications: it suggests an extreme version of the modularity of language, and can only be paired with non‐classical—indeed quite exotic—kinds of deductive systems. The aim of this paper is to show that we can pair the logicality of language with a different and ultimately more traditional account of logical form. This framework accounts for the basic acceptability patterns which motivated the logicality of language, can explain why some tautologies and contradictions are acceptable, and makes better predictions in key cases. As a result, we can pursue versions of the logicality of language in frameworks compatible with the view that the language system is not radically modular vis‐á‐vis its open class terms and employs a deductive system that is basically classical. (shrink)

Mathematical chemistry is often thought to be a 20th-century subdiscipline of chemistry, but in this paper we discuss several early chemical ideas and some landmarks of chemistry as instances of the mathematical way of thinking; many of them before 1900. By the mathematical way of thinking, we follow Weyl's description of it in terms of functional thinking, i.e. setting up variables, symbolizing them, and seeking for functions relating them. The cases we discuss are Plato's triangles, Geoffroy's affinity table, Lavoisier's classification (...) of substances and their relationships, Mendeleev's periodic table, Cayley's enumeration of alkanes, Sylvester's association of algebra and chemistry, and Wiener's relationship between molecular structure and boiling points. These examples show that mathematical chemistry has much more than a century of history. (shrink)

How are biases encoded in our representations of social categories? Philosophical and empirical discussions of implicit bias overwhelmingly focus on salient or statistical associations between target features and representations of social categories. These are the sorts of associations probed by the Implicit Association Test and various priming tasks. In this paper, we argue that these discussions systematically overlook an alternative way in which biases are encoded, that is, in the dependency networks that are part of our representations of social categories. (...) Dependency networks encode information about how features in a conceptual representation depend on each other. This information determines the degree of centrality of a feature for a conceptual representation. Importantly, centrally encoded biases systematically disassociate from those encoded in salient-statistical associations. Furthermore, the degree of centrality of a feature determines its cross-contextual stability: in general, the more central a feature is for a concept, the more likely it is to survive into a wide array of cognitive tasks involving that concept. Accordingly, implicit biases that are encoded in the central features of concepts are predicted to be more resilient across different tasks and contexts. As a result, the distinction between centrally encoded and salient-statistical biases has important theoretical and practical implications. (shrink)

To build cultures of peace, one must often lay aside the "expert" label and become a student in the world who is willing to learn from other cultures in pursuit of peace. To set up an intercultural dialogue on this topic, the Committee for the Psychological Study of Peace, in conjunction with the University for Peace and the Institute for Psychological Research of the University of Costa Rica, sponsored the 6th International Symposium on the Contribution of Psychology to Peace. This (...) special issue extends the dialogue which began at the Symposium. Aiming to help define the role and contributions of psychologists in building cultures of peace, the articles in this issue address: *topics relating to human rights; *how psychologists can contribute to democratization; *how psychology has much to say on the causes and dynamics of intolerance and the processes of building tolerance in the context of intergroup relations; *how psychology can contribute to understanding and fostering nonviolence; *how cultures of peace will not be possible without a concerted effort to bring about global environmental security and that our failure to restore environmental health is fundamentally a psychological problem; and *psychologically informed policies for the promotion of cultures of peace, including the importance of gender equity. (shrink)

We analyze the connections of Lavoisier system of nomenclature with Leibniz’s philosophy, pointing out to the resemblance between what we call Leibnizian and Lavoisian programs. We argue that Lavoisier’s contribution to chemistry is something more subtle, in so doing we show that the system of nomenclature leads to an algebraic system of chemical sets. We show how Döbereiner and Mendeleev were able to develop this algebraic system and to find new interesting properties for it. We pointed out the resemblances between (...) Leibniz program and Lavoisier legacy, particularly regarding the lingua philosophica for understanding and thinking Nature, in this particular case, chemistry. In the second part we discuss, from the linguistic viewpoint, how Lavoisian algebraic system may be taken further to build a language. We study the constituents of such a chemical language. Finally, we formalize some of the ideas here presented by using elements of network theory and discrete mathematics. (shrink)

El objetivo de este artículo es analizar el concepto de duración de Spinoza. Mostrando la diferencia en relación con algunas obras anteriores, interesa interrogar esta noción en el contexto de la inmanencia de la potencia y del ser necesario como ser eterno que se siguen de la ontología de la Ética. Nuestro propósito es mostrar que en esa obra la perspectiva de nuestro autor se independiza completamente de la perspectiva adoptada superficialmente en los Pensamientos metafísicos, y que hace aparecer a (...) la duración con otras características y analizada en función de otra problemática, más vinculada a la ética y la correcta forma de vivir. (shrink)

According to Kratzer’s influential account of epistemic must and might, these operators involve quantification over domains of possibilities determined by a modal base and an ordering source. Recently, this account has been challenged by invoking contexts of ‘epistemic tension’: i.e., cases in which an assertion that must\ is conjoined with the possibility that \, and cases in which speakers try to downplay a previous assertion that must\, after finding out that \. Epistemic tensions have been invoked from two directions. Von (...) Fintel and Gillies :351–383, 2010) propose a return to a simpler modal logic-inspired account: must and might still involve universal and existential quantification, but the domains of possibilities are determined solely by realistic modal bases. In contrast, Lassiter :117–163, 2016), following Swanson, proposes a more revisionary account which treats must and might as probabilistic operators. In this paper, we present a series of experiments to obtain reliable data on the degree of acceptability of various contexts of epistemic tension. Our experiments include novel variations that, we argue, are required to make progress in this debate. We show that restricted quantificational accounts à la Kratzer fit the overall pattern of results better than either of their recent competitors. In addition, our results help us identify the key components of restricted quantificational accounts, and on that basis propose some refinements and general constraints that should be satisfied by any account of the modal auxiliaries. (shrink)

This article suggests a novel approach to the study of the argumentative structure of Proclus’ Elements of Theology (ET). Instead of studying it through the prism of the Elements of Euclid (EG), this novel approach proposes an evaluation of ET’s argumentative structure based on Proclus’ reflections about the genre of stoicheiôsis and the methods of dialectic and geometry. Thus, I argue that studies under the suggested form of evaluation should standardize the conceptual framework of their analyses about the features of (...) ET’s argumentative structure, explicating their relevance for the interpretation of the text’s system of logical relations. Moreover, this article presents some examples of editorial enhancements made by editors of ET clarifying the argumentative structure of the text. With these examples, I will show how these enhancements help us clarify the argumentative structure of ET. (shrink)

The logicality of language is the hypothesis that the language system has access to a ‘natural’ logic that can identify and filter out as unacceptable expressions that have trivial meanings—that is, that are true/false in all possible worlds or situations in which they are defined. This hypothesis helps explain otherwise puzzling patterns concerning the distribution of various functional terms and phrases. Despite its promise, logicality vastly over-generates unacceptability assignments. Most solutions to this problem rest on specific stipulations about the properties (...) of logical form—roughly, the level of linguistic representation which feeds into the interpretation procedures—and have substantial implications for traditional philosophical disputes about the nature of language. Specifically, contextualism and semantic minimalism, construed as competing hypotheses about the nature and degree of context-sensitivity at the level of logical form, suggest different approaches to the over-generation problem. In this paper, I explore the implications of pairing logicality with various forms of contextualism and semantic minimalism. I argue that to adequately solve the over-generation problem, logicality should be implemented in a constrained contextualist framework. (shrink)

Este trabajo pretende preguntarse si, a pesar del “silencio” de Heidegger ante la teoría de los géneros poéticos de Hölderlin, no es esta misma teoría, y especialmente el poema lírico que caracteriza a la modernidad, la cuestión en la cual se apoya Heidegger para fundamentar su “historia del ser”, de modo que la noción fuerte de _historia _que se maneja en su obra y finalmente el término marcado _das Ereignis _estaría en sintonía con los “trayectos poéticos” que Hölderlin teoriza.

In the present philosophical reflection my purpose consists of revising two big points based on the book Theory and Practice of Bioethics Principles, written by Ricardo Maliandi and Oscar Thüer. The first point is linked with the problem of foundation of ethics proposed by the authors. The second point is linked with the problem related with the model of ethical applicability proposed by the authors.

Este artículo estudia algunos problemas relativos a la doctrina de la temporalidad de Spinoza, centrando el análisis en los Principios de filosofía de Descartes, los Pensamientos metafísicos y la “Carta sobre el infinito”, todas de 1663. Con ello esperamos mostrar que la exposición spinoziana de los conceptos de tiempo y duración en la obra de 1663, si bien sigue la conceptualización cartesiana, opera sobre ésta una crítica implícita (inmanente podríamos decir) que lleva al pensamiento spinoziano hacia sus propios horizontes conceptuales, (...) que serán explícitamente definidos en la carta 12. De esta manera, asimismo, este trabajo busca contribuir al estudio del estatuto de la obra de 1663 y del significado de la doctrina de la temporalidad de Spinoza en este período formativo de su pensamiento. (shrink)

This book presents a new explanation of the rise, development and demise of social movements and cycles of protest in autocracies; the conditions under which protest becomes rebellion; and the impact of protest and rebellion on democratization. Focusing on poor indigenous villages in Mexico's authoritarian regime, the book shows that the spread of US Protestant missionaries and the competition for indigenous souls motivated the Catholic Church to become a major promoter of indigenous movements for land redistribution and indigenous rights. The (...) book explains why the outbreak of local rebellions, the transformation of indigenous claims for land into demands for ethnic autonomy and self-determination, and the threat of a generalized social uprising motivated national elites to democratize. Drawing on an original dataset of indigenous collective action and on extensive fieldwork, the empirical analysis of the book combines quantitative evidence with case studies and life histories. (shrink)

Recent work in formal semantics suggests that the language system includes not only a structure building device, as standardly assumed, but also a natural deductive system which can determine when expressions have trivial truth-conditions (e.g., are logically true/false) and mark them as unacceptable. This hypothesis, called the `logicality of language', accounts for many acceptability patterns, including systematic restrictions on the distribution of quantifiers. To deal with apparent counter-examples consisting of acceptable tautologies and contradictions, the logicality of language is often paired (...) with an additional assumption according to which logical forms are radically underspecified: i.e., the language system can see functional terms but is `blind' to open class terms to the extent that different tokens of the same term are treated as if independent. This conception of logical form has profound implications: it suggests an extreme version of the modularity of language, and can only be paired with non-classical---indeed quite exotic---kinds of deductive systems. The aim of this paper is to show that we can pair the logicality of language with a different and ultimately more traditional account of logical form. This framework accounts for the basic acceptability patterns which motivated the logicality of language, can explain why some tautologies and contradictions are acceptable, and makes better predictions in key cases. As a result, we can pursue versions of the logicality of language in frameworks compatible with the view that the language system is not radically modular vis-a-vis its open class terms and employs a deductive system that is basically classical. (shrink)

Bi-intuitionistic logic is the result of adding the dual of intuitionistic implication to intuitionistic logic. In this note, we characterize the expressive power of this logic by showing that the first order formulas equivalent to translations of bi-intuitionistic propositional formulas are exactly those preserved under bi-intuitionistic directed bisimulations. The proof technique is originally due to Lindstrom and, in contrast to the most common proofs of this kind of result, it does not use the machinery of neither saturated models nor elementary (...) chains. (shrink)

The classification of ageing as a disease is fundamental to developing new pharmacological strategies that can target said phenomenon. The European Medicines Agency does not do this and maintains a questionable perspective based on the traditional naturalistic argument and the value-free ideal. An alternative is proposed which, inspired by consequentialism, is committed to considering ageing as a disease in European regulatory contexts as long as the ethical consequences are desirable. Within a realistic framework, I show that making this decision would (...) have moderate positive effects such as increased knowledge about antiageing pharmacology or potential greater chances of completing vital projects. Furthermore, we will see that the main arguments used by critics to show that the negative effects outweigh the positive ones are not sound. Therefore, I conclude that it would be beneficial for the European Medicines Agency to change its position on ageing. (shrink)

From the information previously available, the Triclinian edition of Theocritus, known through the manuscripts Paris, BNF gr. 2832 and Vaticano, BAV gr. 1825 + 1824, was believed to end with the Syrinx and the Ara Dosiadae. Thanks to the discovery of a folio of the MS. Vaticano, BAV gr. 1824 in the Bodleian Library in Oxford, we now know that it continued with at least the Ara Ionica and the Securis, both with Holobolus's scholia. Folio 144 of the MS. Oxford, (...) BL D'Orville 71 thus now constitutes a prime witness of these scholia. (shrink)

The point of departure for htis essay is the evaluation of democracy in Latin America, in particular, Colombian democracy following the new, 1991 Constitution. Special emphasis is placed upon the phenomena of violence, corruption and abstentionism, while a solution for these problems is sought in the strengthening of democracy in the specific form of participatory democracy, understood as a more authentic version capable of incorporating diverse cultures, classes and social movements. Recent discussions in contemporary moral and political philosophy help to (...) clarify the meaning of participatory democracy through a reconstruction of the debate between J. Habermas' discourse ethics and radical democracy, and J. Rawls' political liberalism, which has in turn been challenged by the liberal and communitarian critiques of R. Dworkin and M. Sandel, respectively. (shrink)

This paper is a step toward showing what is achievable using non-classical metatheory—particularly, a substructural paraconsistent framework. What standard results, or analogues thereof, from the classical metatheory of first order logic can be obtained? We reconstruct some of the originals proofs for Completeness, Löwenheim-Skolem and Compactness theorems in the context of a substructural logic with the naive comprehension schema. The main result is that paraconsistent metatheory can ‘re-capture’ versions of standard theorems, given suitable restrictions and background assumptions; but the shift (...) to non-classical logic may recast the meanings of these apparently ‘absolute’ theorems. (shrink)

Lindström’s theorem obviously fails as a characterization of first-order logic without identity ( $\mathcal {L}_{\omega \omega }^{-} $ ). In this note, we provide a fix: we show that $\mathcal {L}_{\omega \omega }^{-} $ is a maximal abstract logic satisfying a weak form of the isomorphism property (suitable for identity-free languages and studied in [11]), the Löwenheim–Skolem property, and compactness. Furthermore, we show that compactness can be replaced by being recursively enumerable for validity under certain conditions. In the proofs, we (...) use a form of strong upwards Löwenheim–Skolem theorem not available in the framework with identity. (shrink)

The purpose of this paper is to introduce everyday aesthetics in education. First, it presents everyday aesthetics as a subdiscipline within philosophical aesthetics, that revisits sensory perception as the backdrop of all experience, claims ordinary life is a proper venue for aesthetic inquiry, and problematizes the impact aesthetic preferences have on habitual decisions. Second, the paper argues that among the diverse matters students learn in school, they learn—explicitly or implicitly—what and how to perceive, as well as the pedagogical purposes of (...) daily perception. School models the relationships that students will develop between what they perceive, what they think about it, and how they act accordingly. Next, the paper elaborates on the notions of “school aesthetic matrixes” and “space and place in school”. School aesthetic matrixes refer to perceptual patterns that allow characterizing relationships between daily perception and the pedagogical project of a school. They manifest through expressions such as prison school, home school, mall school, etc. Space and place in school allude to concomitant experiences, of corporeal basis, that allow describing how we inhabit the world. What distinguishes them is the approach each one gives to the senses and the body. The paper concludes by calling attention to the comprehension and role of perception in education, urging to mind the aesthetic-pedagogical character that students develop throughout 12 years of schooling. Ultimately, the key relationships we develop with ourselves, others, and the world, entail a basic perceptual dimension that can be educated to become more purposefully and integrally present in life. (shrink)

El objetivo del artículo es reflexionar sobre el concepto de revuelta popular para precisar su valor heurístico en relación con la comunidad política. Para ello se realiza un recorrido teórico de la idea de revuelta popular en algunos textos de Arendt, Rancière, Blanchot, Nancy, Agamben y Esposito. Propongo que la revuelta debe ser entendida en el marco de una ontología de la comunidad. Se concluye que la revuelta popular supone el rechazo de un orden de desigualdad sostenido en un desacuerdo (...) y la exigencia de no perder la comunidad entendida como el lugar mismo de nuestra existencia. The aim of this paper is to reflect on the concept of popular revolt in order to clarify its heuristic value in relation to political community. The essay traces a theoretical trajectory of the idea of popular revolt in some texts of Arendt, Rancière, Blanchot, Nancy, Agamben and Esposito. I propose that popular revolt must be understood in the context of an ontology of the community. I conclude that popular revolt presumes the rejection of an order on inequality sustained by a disagreement and the requirement of not to lose the community understood as the very place of our existence. (shrink)

Se sostiene que la propuesta de Rodriguez-Pereyra de que los analíticos iberoamericanos publiquemos todos nuestras investigaciones en inglés es inviable e indeseable.

This paper defines a Sahlqvist fragment for relevant logic and establishes that each class of frames in the Routley-Meyer semantics which is definable by a Sahlqvist formula is also elementary, that is, it coincides with the class of structures satisfying a given first order property calculable by a Sahlqvist-van Benthem algorithm. Furthermore, we show that some classes of Routley-Meyer frames definable by a relevant formula are not elementary.

A partir del análisis de algunas cuestiones hermenéuticas en la película Edipo rey, se defiende que uno de los aspectos centrales de la crítica a la sociedad de Pasolini es el allanamiento de la propiedad simbólica. Con ello, en este trabajo nos referiremos a la homologación consecuente de la sociedad de consumo que se manifiesta como una pérdida de lo sagrado. En esta línea, se analizan algunas cuestiones teóricas a propósito del pensamiento de Pasolini sobre el cine y se sostiene (...) que ese allanamiento de la propiedad simbólica es una condición de la posibilidad de “lo político” en nuestro tiempo. (shrink)

We generalize the notion ofconsequence relationstandard in abstract treatments of logic to accommodate intuitions ofrelevance. The guiding idea follows theuse criterion, according to which in order for some premises to have some conclusion(s) as consequence(s), the premises must each beusedin some way to obtain the conclusion(s). This relevance intuition turns out to require not just a failure of monotonicity, but also a move to considering consequence relations as obtaining betweenmultisets. We motivate and state basic definitions of relevant consequence relations, both (...) in single conclusion (asymmetric) and multiple conclusion (symmetric) settings, as well as derivations and theories, guided by the use intuitions, and prove a number of results indicating that the definitions capture the desired results (at least in many cases). (shrink)