The question about the relation between spacetime structure and the symmetries of laws has received renewed attention in a recent discussion about the status of Minkowski spacetime in Special Relativity. In that context we find two extreme positions (either spacetime explains symmetries of laws or vice-versa) and a general assumption about the debate being mainly about explanation. The aim of this paper is twofold: first, to argue that the ontological dimension of the debate cannot be ignored; second, to claim that (...) taking ontology into account involves considering a third perspective on the relation between spacetime and symmetries of laws; one in which both terms would be somehow derived from common assumptions on the formulation of a given physical theory. (shrink)

It has been claimed, recently, that the fact that all the non-gravitational fields are locally Poincaré invariant and that these invariances coincide, in a certain regime, with the symmetries of the spacetime metric is miraculous in general relativity. In this paper I show that, in the context of GR, it is possible to account for these so-called miracles of relativity. The way to do so involves integrating the realisation that the gravitational field equations impose constraints on the behaviour of matter (...) in a novel interpretation of the equivalence principle, which dictates the determination of local inertial frames through gravitational interaction. This proposed explanation of the miracles can also deal with the problematic cases for attempts at explaining them in the context of the standard geometrical perspective on relativity theory. (shrink)

En este artículo tratamos el “romance do Comandante Moreno” como parte de la música de tradición oral gallega y de la memoria histórica en relación a la Guerra Civil española. Metodológicamente trabajamos con análisis de corte etnomusicológico que se centran en parámetros musicales, literarios y de contexto, además de trabajar con referencias bibliográficas y audiovisuales. Así, nos encontramos con características propias de la música de tradición gallega y una descripción concisa de los hechos, siendo este romance un testigo fidedigno de (...) los asesinatos ocurridos en 1937 y, por ello, un elemento con oportunidades didácticas para la creación de proyectos interdisciplinares. (shrink)

This article deals with the form and use of reformulation markers in research papers written in English, Spanish and Catalan. Considering the form and frequency of the markers, English papers tend to prefer simple fixed markers and include fewer reformulators than Spanish and Catalan. On the contrary, formal Catalan and Spanish papers include more markers, some of which are complex and allow for some structural variability. As for use, reformulation markers establish dynamic relationships between portions of discourse which can be (...) identified in our corpus with expansion, reduction and permutation. The analysis of the corpus shows that English authors usually reformulate to add more information to the concept, whereas Catalan and Spanish authors reduce the contents or the implicatures of the previous formulation more frequently than English. (shrink)

A theory of relativity, along with its appropriate group of Lorentz-type transformations, is presented. The theory is developed on a metric withR×S 3 topology as compared to ordinary relativity defined on the familiar Minkowskian metric. The proposed theory is neither the ordinary special theory of relativity (since it deals with noninertial coordinate systems) nor the general theory of relativity (since it is not a dynamical theory of gravitation). The theory predicts, among other things, that finite-mass particles in nature have maximum (...) rotational velocities, a prediction highly supported by recent experiments on 14 nuclei, such as 159 Yb that survives fission with angular velocities of up to 0.9 of the predicted value but does not reach it. (shrink)

The dynamics of rapidly rotating bodies is formulated in a rotationally invariant form in all frames rotating with constant angular velocities relative to each other. This includes the energy, angular momentum, rotational frequency, and moment of inertia. The transformation between these quantities, when expressed in different frames, is then given explicitly and expressed in terms of both the angular momentum and the rotational frequency variables. Comparison with the approximate formula for the Routhian is made, and some consequences of physical interest (...) are drawn. (shrink)

This article deals with interactions between citizenship and political ecology by examining the ‘pulp mills conflict’ in Gualeguaychú, Argentina. The conflict burst in 2003 when the Uruguayan authorities announced the construction of a cellulose plant on the shore of the Uruguay River. The citizens of Gualeguaychú, a city right across the border, initiated a movement of protest that soon transcended the local dimension. I argue that this protest was a battle over sovereignty and an environmental conflict between different conceptions of (...) development and diverse views of the use of a common resource, the river. The notion of ecological citizenship formed in this process is assessed by examining how this concept was constructed by local stakeholders and by unveiling the motivations informing citizens’ engagement. (shrink)

Exposición realizada por el Doctor en Filosofía Adán Salinas Araya, en el ciclo de conversaciones “Crítica a la Epidemiología Política. Prácticas y racionalidad neoliberales en tiempos de pandemia”, organizado por el equipo editorial de la Revista de Filosofía Otrosiglo, octubre – diciembre 2020. Disponible en Youtube, canal Revista Otrosiglo. Lecture by Adán Salinas Araya, Ph. D., in the cycle of conversations “Criticism to the Political Epidemiology. Neoliberal practices and rationality in times of pandemics”, event organized by the editorial (...) team of the Philosophy Magazine Otrosiglo, october – december 2020. Available on Youtbe, channel Revista Otrosiglo. (shrink)

In General Relativity (GR), it has been claimed that inertia receives a dynamical explanation. This is in contrast to the situation in other theories, such as Special Relativity, because the geodesic principle of GR can be derived from Einstein’s field equations. The claim can be challenged in different ways, all of which question whether the status of inertia in GR is physically different from its status in previous spacetime theories. In this paper I state the original argument for the claim (...) precisely, discuss the different objections to it and then propose a formulation that avoids the problems the original claim encounters. My conclusion is that one can say meaningfully that inertia is dynamically explained in GR. There are two senses in which the derivation of geodetic motion can be said to provide a (more) dynamical explanation of inertia in GR: it holds for any material test body that is a source of the gravitational field; and it is derivable without assuming inertial structures that are fixed independently of matter. (shrink)

As a discourse genre, statements of purpose are characterized by their occluded status in the academy and by their hybrid nature. Statements of purpose are required in applications for a place in a postgraduate course, and they are requested to obtain information about the academic and professional background and skills of each applicant. A study of the genre’s linguistic and textual features is needed in Spanish to discover and understand writers’ and readers’ perception of this genre. A corpus of 50 (...) motivation letters in Spanish is analyzed here. We study the distinguishing macro- and microtextual features of this particular genre and co-occurrences between both kinds of features. At the macrotextual level, statements of purpose display prototypical rhetorical moves, which can be classified as writers’ moves and readers’ moves. On the microtextual level, modalization resources and discourse markers are discussed. This multiple perspectives analysis of the corpus shows evidence of significant co-occurrences among modalization, discourse markers, and rhetorical moves. Writers’ ideal representations of this discourse genre, which spans the academic and professional fields, can also be deduced. (shrink)

The interpretation and justification of Earman’s symmetry principles (stating that any spacetime symmetry should be a dynamical symmetry and vice-versa) are controversial. This is directly connected to the question of how certain structures in physical theories acquire a spatiotemporal character. In this paper I address these issues from a perspective (arguably functionalist) that relates the classical discussion about the measurement and geometrical determination of space with a characterization of the notion of dynamical symmetry in which its application to subsystems that (...) act as measuring devices plays an essential role. I argue that in order to reformulate and justify Earman’s principles, and to provide a general account of the chronogeometrical character of some structures, the existence of a coordination between two notions of congruence, one mathematical and one dynamical, must be assumed for the interpretation of physical theories. This coordination provides the basis on which we can understand space-time in physical theories as the codification (representation) of certain features of the access ideal observers have to experience. (shrink)

A proof of Bell’s theorem without inequalities is presented in which distant local setups do not need to be aligned, since the required perfect correlations are achieved for any local rotation of the local setups.

Bell non-locality and Kochen–Specker contextuality are logically independent concepts, fuel different protocols with quantum vs classical advantage, and have distinct classical simulation costs. A natural question is what are the relations between these concepts, advantages, and costs. To address this question, it is useful to have a map that captures all the connections between Bell non-locality and KS contextuality in quantum theory. The aim of this work is to introduce such a map. After defining the theory-independent notions of Bell non-locality (...) and KS contextuality for ideal measurements, we show that, in quantum theory, due to Neumark’s dilation theorem, every quantum Bell non-local behavior can be mapped to a formally identical KS contextual behavior produced in a scenario with identical relations of compatibility but where measurements are ideal and no space-like separation is required. A more difficult problem is identifying connections in the opposite direction. We show that there are “one-to-one” and partial connections between KS contextual behaviors and Bell non-local behaviors for some KS scenarios, but not for all of them. However, there is also a method that transforms any KS contextual behavior for quantum systems of dimension d into a Bell non-local behavior between two quantum subsystems each of them of dimension d. We collect all these connections in map and list some problems which can benefit from this map. (shrink)

We introduce a two-party communication complexity problem in which the probability of success by using a particular strategy allows the parties to detect with certainty whether or not some forbidden communication has taken place. We show that theprobability of success is bounded by nature; any conceivable method which gives a probability of success outside these bounds is impossible. Moreover, any conceivable method to solve the problem which gives a probability success within these bounds is possible in nature. This example suggests (...) that a suitaby chosen set of communication complexity problems could be the basis of an information-theoretic axiomatization of quantum mechanics. (shrink)

If quantum mechanics is correct and there is a finite upper bound for the speed of causal influences (e.g., the speed of light), then quantum mechanics is complete (i.e., it does not admit a more detailed description in terms of hidden variables). Here I show that the conclusion holds if we replace the assumption of bounded velocity by the assumption that there is a finite upper bound to the memory a finite physical system can store (e.g., the Holevo bound). On (...) the way to this conclusion I first show that, although the quantum violation of an inequality valid for any non-contextual model can be explained with a classical contextual model, the inequality can be promoted to a Bell inequality in which, if the model is contextual, then it must be also non-local. This suggests that there is something non-classical in any contextual explanation of the individual systems, and leads us to the question of which are the minimum resources (and specifically memory) any contextual explanation should consume. (shrink)

We describe a particular class of pairs of quantum observables which are extremal in the convex set of all pairs of compatible quantum observables. The pairs in this class are constructed as uniformly noisy versions of two mutually unbiased bases with possibly different noise intensities affecting each basis. We show that not all pairs of MUB can be used in this construction, and we provide a criterion for determining those MUB that actually do yield extremal compatible observables. We apply our (...) criterion to all pairs of Fourier conjugate MUB, and we prove that in this case extremality is achieved if and only if the quantum system Hilbert space is odd-dimensional. Remarkably, this fact is no longer true for general non-Fourier conjugate MUB, as we show in an example. Therefore, the presence or the absence of extremality is a concrete geometric manifestation of MUB inequivalence, that already materializes by comparing sets of no more than two bases at a time. (shrink)

Much discussion was inspired by the publication of Harvey Brown's book \textit{Physical Relativity} and the so-called dynamical approach to Special Relativity there advocated. At the center of the debate there is the question about the nature of the relation between spacetime and laws or, more specifically, between spacetime symmetries and the symmetries of laws. Originally, the relation was mainly assumed to be explanatory and the dispute expressed in terms of the arrow of explanation – whether it goes from spacetime (symmetries) (...) to (symmetries of) laws or vice-versa. Not everybody agreed with a setting that involves leaving ontology out. In a recent turn, the relation has been claimed to be analytical or definitional. In this paper I intend to examine critically this claim and propose a way to generally understand the relation between spacetime symmetries and symmetries of laws as deriving from constitutive principles. (shrink)

Dark matter is an essential ingredient of the present Standard Cosmological Model, according to which only 5% of the mass/energy content of our universe is made of ordinary matter. In recent times, it has been argued that certain cases of gravitational lensing represent a new type of evidence for the existence of DM. In a recent paper, Peter Kosso attempts to substantiate that claim. His argument is that, although in such cases DM is only detected by its gravitational effects, gravitational (...) lensing is a direct consequence of Einstein's Equivalence Principle and therefore the complete gravitational theory is not needed in order to derive such lensing effects. In this paper I critically examine Kosso's argument: I confront the notion of empirical evidence involved in the discussion and argue that EEP does not have enough power by itself to sustain the claim that gravitational lensing in the Bullet Cluster constitutes evidence for the DM Hypothesis. As a consequence of this, it is necessary to examine the details of alternative theories of gravity to decide whether certain empirical situations are indeed evidence for the existence of DM. It may well be correct that gravitational lensing does constitute evidence for the DM Hypothesis—at present it is controversial whether the proposed modifications of gravitation all need DM to account for the phenomenon of gravitational lensing and if so, of which kind—but this will not be a direct consequence of EEP. (shrink)

This book describes Carmeli's cosmological general and special relativity theory, along with Einstein's general and special relativity. These theories are discussed in the context of Moshe Carmeli's original research, in which velocity is introduced as an additional independent dimension. Four- and five-dimensional spaces are considered, and the five-dimensional braneworld theory is presented. The Tully-Fisher law is obtained directly from the theory, and thus it is found that there is no necessity to assume the existence of dark matter in the halo (...) of galaxies, nor in galaxy clusters.The book gives the derivation of the Lorentz transformation, which is used in both Einstein's special relativity and Carmeli's cosmological special relativity theory. The text also provides the mathematical theory of curved space?time geometry, which is necessary to describe both Einstein's general relativity and Carmeli's cosmological general relativity. A comparison between the dynamical and kinematic aspects of the expansion of the universe is made. Comparison is also made between the Friedmann-Robertson-Walker theory and the Carmeli theory. And neither is it necessary to assume the existence of dark matter to correctly describe the expansion of the cosmos. (shrink)

El artículo analiza la noción de régimen de veridicción como posible elemento de análisis político, tomando como foco los planteamientos de Foucault en el curso de 1979 Nacimiento de la biopolítica. En este curso, dicha noción es explicada por primera vez y aunque el tema de la veridicción tiene un importante protagonismo en los trabajos posteriores de Foucault, este curso tiene una especial relevancia pues relaciona la operación de veridicción con unas tecnologías políticas de gobierno, como son las artes liberales (...) de gobierno e incluso sus modificaciones en el contexto del neoliberalismo. (shrink)

Kant afirma que espacio y tiempo son condiciones a priori de toda experiencia, a la vez que parece comprometerse con la naturaleza euclidiana del espacio y la simultaneidad absoluta. Su defensa del carácter a priori de estas nociones pasa por considerarlas intuiciones puras, de ahí que su naturaleza newtoniana parecería tener su origen en la configuración de lo que Kant llama intuición. No obstante, como muestran ciertas discusiones recientes, no está claro qué sea la intuición en Kant y cómo se (...) determina el espacio-tiempo a partir de ella. En este artículo, me acerco al debate sobre la procedencia de la síntesis de la intuición pura que, según Kant, determinaría la estructura espacio-temporal y discuto hasta que punto tener en cuenta la participación de las categorías en esta síntesis puede tener un efecto en el compromiso que, según la propuesta kantiana, uno debería asumir con respecto a una métrica determinada a priori. Mi conclusión es que el análisis kantiano da cabida, de forma natural, a que la determinación de la métrica espacio-temporal no esté dada a priori, en el sentido de universal y necesariamente. (shrink)

Convencida de que con un deseo profundo de verdad y una atención sin límites se puede alcanzar la verdad, Simone Weil emprende un camino interior de búsqueda de la verdad, que tiene a la realidad como principal referente. La atención a lo real en su experiencia de trabajo como obrera, en su participación en los dramas de la guerra de España y la Segunda guerra mundial, durante el trabajo como profesora de filosofía, y a lo largo de tantos acontecimientos y (...) encuentros, supusieron para la filósofa un camino personal de hallazgo de lo sobrenatural, que generó una orientación metafísica en su concepción del mundo. Sin embargo, aunque tanto vital como intelectualmente Simone Weil atravesó varios umbrales, en su pensamiento permanece un mismo hilo conductor; esto puede comprobarse leyendo algunos escritos de juventud. El presente trabajo muestra etapas significativas de la vida y el pensamiento de Simone Weil, y considera igualmente vivencias de carácter místico al final de su vida, fruto de la irrupción en ella de lo sobrenatural como una dimensión de lo real. (shrink)

En este artículo trabajamos dentro del campo de la música tradicional, vinculándola con la perspectiva de género a través del análisis de los roles establecidos tanto en la tradición como en la actualidad. Para ello establecemos una metodología basada en la realización de entrevistas como medio para suplir la falta de referencias bibliográficas. Nuestros resultados se centran en la continuidad de los roles de género y su distribución a través de relaciones de poder, independientemente de los cambios de contexto acaecidos (...) entre la tradición y la actualidad. Por último reflejaremos el interés actual y las posibilidades didácticas sobre el tema. (shrink)

In this paper, we take Darwall’s analytical project of the second-person standpoint as the starting point for a naturalistic project about our moral psychology. In his project, Darwall contends that our moral notions constitutively imply the perspective of second-personal interaction, i.e. the interaction of two mutually recognized agents who make and acknowledge claims on one another. This allows him to explain the distinctive purported authority of morality. Yet a naturalized interpretation of it has potential as an account of our moral (...) psychology. We propose a naturalistic interpretation of Darwall’s work to address some of the main issues about our moral psychology. First, we explain why moral norms motivate us; namely, because of these second-personal relations. We provide a naturalized version of this solution. Second, we articulate how intersubjective interactions take place effectively; grounding duties to particular other subjects, and being related to distinctive moral emotions. Third, we address the question of the limits of the moral community, proposing that it comprises all agents capable of second-personal interactions. Finally, we explain the emergence of community norms through intersubjective interaction. Since all group members can adopt alternatively the second-personal stance to each other, demands are sanctioned and recognized in a triangulation process which explains the emergence of group norms. (shrink)

Se tratan algunas de las discusiones vertidas en el coloquio Lippmann de 1938, evento que puede considerarse con los datos actuales como la escena inaugural del neoliberalismo. Se muestra tanto la heterogeneidad de dos grupos de pensadores que marcarán posteriormente la línea alemana y norteamericana de pensadores neoliberales. Al mismo tiempo se muestran algunas de sus coincidencias principales en torno a una idea de democracia para el mercado.

El artículo pretende explorar la categoría de hombre-empresa, que Foucault propuso como uno de los dispositivos o interfaces claves del poder en el contexto del neoliberalismo. A través de esta categoría se muestra una particular forma de poder sobre la vida, o biopoder, que es distinto al tipo de poder de la sociedad disciplinaria, aunque tiene relaciones de continuidad con este último. En tal sentido el artículo maneja la hipótesis de la superposición o coexistencia, de las formas del poder, en (...) contra de las hipótesis más extendidas, que entiende la biopolítica o como una superación de las sociedades disciplinarias o como una sofisticación de la misma. El artículo remite constantemente a las formas del neoliberalismo chileno como punto de referencia para entender las tensiones del biopoder. (shrink)

Theoretical debates around the concept of self-deception revolve around identifying the conditions for a behavior to qualify as self-deception. Experiments 1 and 2 revealed that various candidate features—such as intent, belief change, and motive—are treated as sufficient, but non-necessary, conditions according to the lay concept of self-deception. This led us to ask whether there are multiple lay concepts, such that different participants endorse competing theories (the disagreement view), or whether individual participants assign partial weight to various features and consequently waver (...) in cases of middling similarity (the conflict view). In Experiment 3, by-participant regression models uncovered that most participants additively consider multiple characteristics of the prototype of self-deception, while only a minority of participants treat a characteristic (or a combination thereof) as necessary and sufficient. In sum, by disambiguating interpersonal disagreement and intrapersonal conflict in a within-subjects design, the present experiments indicate that the lay concept may primarily exhibit a prototype structure. In closing, we suggest that future research deploying this method may help to explain why experimental research on philosophical concepts often engenders partial support for competing theories. (shrink)

El artículo propone una interpretación de la obra literaria "Las Crónicas de Narnia" del autor ingles C. S Lewis. Tal interpretación posibilita considerar la alegoría religiosa que esta obra literaria realiza sobre la experiencia de la divinidad a través de la figura del León.

Editorial y presentación del número a cargo del editor de la revista.

A scholarly edition of a work by Adam Smith. The edition presents an authoritative text, together with an introduction, commentary notes, and scholarly apparatus.