This paper proposes a new dialetheic logic, a Dialetheic Logic with Exclusive Assumptions and Conclusions ), including classical logic as a particular case. In \, exclusivity is expressed via the speech acts of assuming and concluding. In the paper we adopt the semantics of the logic of paradox extended with a generalized notion of model and we modify its proof theory by refining the notions of assumption and conclusion. The paper starts with an explanation of the adopted philosophical perspective, then (...) we propose our \ logic. Finally, we show how \ supports the dialetheic solution of the liar paradox. (shrink)

In the present paper we discuss different issues concerning the Philosophy of India. We examine, in the first place, the current situation of the area in Argentinean universities and, more specifically, in the programme of the Licenciaturas in Philosophy taught in our country. We assess, with this purpose, the programme of the thirty two degrees in Philosophy offered by national private and public universities. In the second place, we provide a brief discussion of the up-to-date specialized bibliography about the dilemma (...) concerning the existence or not of philosophy in India. We consider, thus, the possitions of a few authors who try to deconstruct centenary and rooted conceptions about the absence of philosophy in India. We evaluate, as well, the stances of contemporary specialists in Indian thought who defend the presence of philosophy in classical Indian culture arguing from a sistematic and methodologically honest knowledge of this tradition. Our inquiry tries to show, in such a way, that approaching the (meta)philosophical dilemma regarding the presence or absence of philosophy in India requires and implies a (self-)critical and specialized tradition of research in the area, and that in our country this tradition exists only in an very incipient stage. (shrink)

In Lewis reconstructs set theory using mereology and plural quantification (MPQ). In his recontruction he assumes from the beginning that there is an infinite plurality of atoms, whose size is equivalent to that of the set theoretical universe. Since this assumption is far beyond the basic axioms of mereology, it might seem that MPQ do not play any role in order to guarantee the existence of a large infinity of objects. However, we intend to demonstrate that mereology and plural quantification (...) are, in some ways, particularly relevant to a certain conception of the infinite. More precisely, though the principles of mereology and plural quantification do not guarantee the existence of an infinite number of objects, nevertheless, once the existence of any infinite object is admitted, they are able to assure the existence of an uncountable infinity of objects. So, ifMPQ were parts of logic, the implausible consequence would follow that, given a countable infinity of individuals, logic would be able to guarantee an uncountable infinity of objects. (shrink)

In Mathematics is megethology. Philosophia Mathematica, 1, 3–23) David K. Lewis proposes a structuralist reconstruction of classical set theory based on mereology. In order to formulate suitable hypotheses about the size of the universe of individuals without the help of set-theoretical notions, he uses the device of Boolos’ plural quantification for treating second order logic without commitment to set-theoretical entities. In this paper we show how, assuming the existence of a pairing function on atoms, as the unique assumption non expressed (...) in a mereological language, a mereological foundation of set theory is achievable within first order logic. Furthermore, we show how a mereological codification of ordered pairs is achievable with a very restricted use of the notion of plurality without plural quantification. (shrink)

In To be is to be the object of a possible act of choice the authors defended Boolos’ thesis that plural quantification is part of logic. To this purpose, plural quantification was explained in terms of plural reference, and a semantics of plural acts of choice, performed by an ideal team of agents, was introduced. In this paper, following that approach, we develop a theory of concepts that—in a sense to be explained—can be labeled as a theory of logical concepts. (...) Within this theory, we propose a new logicist approach to natural numbers. Then, we compare our logicism with Frege’s traditional logicism. (shrink)

In this paper, I examine the book "Relations: Ontology and Philosophy of Religion" which is a collection of invited and selected papers dealing with both ontology and the philosophy of religion. It aims at showing how the two disciplines can fruitfully interact and provide useful tools for philosophical investigation. The background is relational ontology and analytical philosophy.

If, as asserted by the French collective Tiqqun, we are essentially living in a global colony, where the 1% control the 99%, then it follows that the revolutionary struggle should strategically reorient itself as guerrilla warfare. The agents of this war, Tiqqun characterize, in part, by drawing on ethnologists Pierre de Clastres and Ernesto de Martino, specifically their figures of the Indigenous American warrior and the Southern Italian sorcerer, respectively. Hybridizing these two figures into that of the “warrior-mage,” the (...) present article posits an actionable exemplar thereof in players of the massively popular trading and online card game, Magic: The Gathering (MTG). More specifically, I propose a strategic mapping of MTG’s five colors of magic onto the five divisions of a coalition against late capitalist Empire, which I call the “Warrior-Mage Guild,” including liberation clerics, animal rights activists, propagandists, anti-psychiatrists, hackers, saboteurs, and those who threaten decolonizing force contra Empire. (shrink)

This paper inquires into how the new techniques of 14th-century physics, especially the doctrines of the maxima and minima of powers and the latitudes of forms, were applied to the issue of propagation of light. The focus is on several Prague disputed questions, originating between 1377 and 1409, dealing with whether illumination has infinite or finite reach and whether illumination’s intensity remains constant (uniformis) or is rather uniformly decreasing (uniformiter difformis). These questions are contextualised through examination of Oxford, Paris, and (...) Prague sources of the era (John Dumbleton, John Buridan, Nicole Oresme, Albert of Saxony, Henry of Langenstein, John of Holland) to construct a fresh survey of late medieval theories of light. Along the way, the discovery of a hitherto unknown Prague disputation from the 1370s is announced, and new evidence for the dating and Central European dissemination of Jacobus de Sancto Martino’s De latitudinibus formarum and Nicole Oresme’s Questiones super Geometriam is uncovered. (shrink)

Straipsnyje nagrinėjama dvejopa machinacijos (Machenschaft) samprata Martino Heideg-gerio technikos filosofijoje. Pirmoji susijusi su Vakarų metafizikos destrukcija (Destruktion) ir jos kulmi-nacija reflektuojama moderniosios technikos plotmėje. Pirmiausiai machinaciją Heideggeris pristato kaip pačios Būties atsivėrimo būdą „pirmoje pradžioje“ (ersten Anfang). Machinacija lemia μετά judesio pamatą, nurodantį į nuolatinę transcendencijos aspiraciją bei „techninį“ esinių atvėrimo pobūdį, nors savo „pajėgumų“ prasme machinacija graikų metafizikoje dar glūdi implicitiškai. Eksplicitiškai machi-nacija pasirodo tik moderniojoje technikoje. Kiek kitokią machinacijos sampratą galime aptikti Heideg-gerio „Juoduosiuose sąsiuviniuose“ (Schwarze Hefte), rašytuose (...) 1931–1938 m. Juose pačią modernybės epochą filosofas pristato kaip machinaciją. Taigi straipsnyje siekiama išryškinti šių dviejų Heideggerio sampratų jungtį, kuri yra machinacijos galios (Macht) augimo tikrovės atžvilgiu nuoroda. (shrink)