B. Russell, Foundations of logic 1903-05, The Collected Papers of Bertrand Russell, Volume 4, Edited by Urquhart, A. with the assistance of Lewis, A. C. London and New York:Routledge, 1994, Hi+ 743 pp. £100.

This is an essay-review of C. Wade Savage and C. Anthony Anderson (editors), Rereading Russell: Essays in Bertrand Russell's Metaphysics and Epistemology, Volume XII of Minnesota Studies in the Philosophy of Science, Minneapolis, University of Minnesota Press, 1989. The book is devoted to studying Russell's later philosophy, although the actual content concerns also Russell's early logical and epistemological writings. Here I study and criticize a group of contributions (mainly those by Hylton, Goldfarb, Cocchiarella, Pears and Demopoulos/Friedman) from a global and (...) methodological approach to Russell's whole philosophy I have developed in other publications. (shrink)

According to the received view, Russell rediscovered about 1900 the logical definition of cardinal number given by Frege in 1884. In the same way, we are told, he stated and developed independently the idea of logicism, using the principle of abstraction as the philosophical ground. Furthermore, the role commonly ascribed in this to Peano was only to invent an appropriate notation to be used as mere instrument. In this paper I hold that the study of Russell's unpublished manuscripts and Peano's (...) (and disciples) writings (as part of a larger investigation only pointed out here) shows, on the contrary, that Russell obtained the method to transform definitions by abstraction into nominal definitions and the general logicist idea from Peano (and his school). The only original insight from Russell, the principle of abstraction, partially derived from Moore's early philosophy, was finally abandoned because it was not of practical use. (shrink)

In this article I propose a new explanation of the relationship between Russell and ther first Wittgenstein. There are five main novelties in my interpretation; the use of all relevant unpublished manuscripts of Russell; the discovery of the first apparition of the “multiple theory of judgment” in a purely logical and unpublished context; the role of the Bradleian objection against relations in the evolution of the nation of form in both Russell and Wittgenstein; a general point of view to obtain (...) a common explanation of all the criticisms of Wittgenstein against Russell and of the abandonment to Theory of Knowledge; and the first account of the contribution of Whitehead to the progressive Russellian evolution from atomism to holism. (shrink)

This paper is devoted to show the development of some of the model-theoretic ideas which are clearly present in the main members of the Peano school (Peano himself, Burali-Forti, Pieri and Padoa) asa result of their conception of nominal definitions. Also, their semantic definition of logical consequence (Pieri, Padoa) is viewed as one of the outcomes of that conception. Some examples of their use of theexpression “nominal definition” are presented first. Second, the main advantages of this kind of definition, as (...) they saw them, are briefly explained, mainly in a philosophical context. Finally, already in the kernel of the paper, some of the details of the model-theoretic view itself are shown, first in Peano, then in Pieri and Padoa, including in both cases some study of their semantic definitions of logicalconsequence. (shrink)

Two unpublished contributions to meetings can be found in the Alfred Tarski Papers, at the University of California, Berkeley. The meetings took place in 1965, in Chicago and London, respectively....

I expose and discuss here the different arguments Bradley used against the tenability of relations as genuine entities, as well as the corresponding arguments against predicates, both in metaphysical and logical terms, and this always in the framework of his semantic general ideas on judgment and truth. Also, I have found useful to try to find similar arguments in Frege, in order to show that, no matter how different their respective goals and methods may have been, both philosophers tried to (...) solve very similar problems regarding the nature of judgment and the role of relations in explaining its deep unity. Then I shall point out the multiple nature of the general problem involved, and finish with some reflections about its importance for analytical philosophers, especially for Russell. (shrink)

In this article I try to show the philosophical continuity of Russell's ideas from his paradox of classes to Principia mathematica. With this purpose, I display the main results (descriptions, substitutions and types) as moments of the same development, whose principal goal was (as in his The principles) to look for a set of primitive ideas and propositions giving an account of all mathematics in logical terms, but now avoiding paradoxes. The sole way to reconstruct this central period in Russell (...) is to resort to unpublished manuscripts, which show the publications of these years to be the extremities of one same iceberg. Thus the logical problems (doubts about propositions, matrices and functions) are parallel to the ontological (the searching for genuine logical subjects) and methodological ones (the status of eliminative reduction). Paradoxes were the cause that the kind of (constructive) definition already applied by Russell, as an inheritance of Moorean analysis, obtained a new trait: ontological elimination, which, beginning with a ?no classes theory? and the theory of descriptions, led to a new theory of judgment (already present in manuscripts from 1906), ?incomplete symbols, and logical constructions. (shrink)

The main thesis of this paper is that some of the most important ideas and symbolic devices that made Russell's theory of descriptions possible were already present in writings by Frege and especially Peano that Russell knew well. The paper contains a detailed comparison between the relevant parts of Russell's theory--including manuscripts recently published--and some of Frege and Peano's insights, as well as a discussion of numerous possible objections that could be posed to the main claim. Even if Russell was (...) not actually influenced by those insights, the parallelism is close enough to be worth analyzing, especially in the case of Peano, whose writings are not very well known. (shrink)

According to Ramsey (Representation reconsidered, Cambridge University Press, New York, 2007 ), only classical cognitive science, with the related notions of input–output and structural representations, meets the job description challenge (the challenge to show that a certain structure or process serves a representational role at the subpersonal level). By contrast, connectionism and other nonclassical models, insofar as they exploit receptor and tacit notions of representation, are not genuinely representational. As a result, Ramsey submits, cognitive science is taking a U-turn from (...) representationalism back to behaviourism, thus presupposing that (1) the emergence of cognitivism capitalized on the concept of representation, and that (2) the materialization of nonclassical cognitive science involves a return to some form of pre-cognitivist behaviourism. We argue against both (1) and (2), by questioning Ramsey’s divide between classical and representational, versus nonclassical and nonrepresentational, cognitive models. For, firstly, connectionist and other nonclassical accounts have the resources to exploit the notion of a structural isomorphism, like classical accounts (the beefing-up strategy); and, secondly, insofar as input–output and structural representations refer to a cognitive agent, classical explanations fail to meet the job description challenge (the deflationary strategy). Both strategies work independently of each other: if the deflationary strategy succeeds, contra (1), cognitivism has failed to capitalize on the relevant concept of representation; if the beefing-up strategy is sound, contra (2), the return to a pre-cognitivist era cancels out. (shrink)

En 1501, Mario Equicola concluye el _Perigynaecon_, la única obra filógina que el humanista de Alvito compondría en toda su vida. Este tratado se idea con una clara finalidad instrumental, pues el autor deseaba entrar al servicio de Isabella d’Este, marquesa consorte de Mantua. Precisamente por ello, tras cada uno de los argumentos que Equicola presenta y detrás de cada una de las mujeres ejemplares que menciona para ensalzar el valor femenino a lo largo de la historia se pueden establecer (...) paralelismos más o menos claros con los problemas que Isabella tuvo que afrontar en su primera década en la corte mantuana. En este artículo analizamos la función que Veturia desempeña en el seno del elenco de mujeres ejemplares del _Perigynaecon_ y profundizamos en algunos de los motivos que podrían haber empujado a Equicola a decantarse por incluir a la madre de Coriolano entre las mujeres a las que alude en su tratado. (shrink)

In this paper we consider twelve classical laws of negation and study their relations in the context of BCK-algebras. A classification of the laws of negation is established and some characterizations are obtained. For example, using the concept of translation we obtain some characterizations of Hilbert algebras and commutative BCK-algebras with minimum. As a consequence we obtain a theorem relating those algebras to Boolean algebras.

In this paper a definition of n-valued system in the context of the algebraizable logics is proposed. We define and study the variety V3, showing that it is definitionally equivalent to the equivalent quasivariety semantics for the “Three-valued BCK-logic”. As a consequence we find an axiomatic definition of the above system.

We hypothesize that under the predicted scenario of climate change epigenetically mediated environmental sex determination could become an epigenetic trap. Epigenetically regulated environmental sex determination is a mechanism by which species can modulate their breeding strategies to accommodate environmental change. Growing evidence suggests that epigenetic mechanisms may play a key role in phenotypic plasticity and in the rapid adaptation of species to environmental change, through the capacity of organisms to maintain a non‐genetic plastic memory of the environmental and ecological conditions (...) experienced by their parents. However, inherited epigenetic variation could also be maladaptive, becoming an epigenetic trap. This is because environmental sex determination can alter sex ratios by increasing the survival of one of the sexes at the expense of negative fitness consequences for the other, which could lead not only to the collapse of natural populations, but also have an impact in farmed animal and plant species. (shrink)

Regarding the epistemological borderlines between science and philosophy, this article approaches the human mind and ethics from biological and philosophical theories. For this purpose, the Darwinian theory of evolution by natural selection provides a scientific foundation to understand the human mind and ethics. However, not only Charles Darwin has studied mental faculties and ethics, this is also a topic researched by eminent contemporary paleontologists and biologists. Prior to modern biology, going back to Greek philosophy, philosophers have traditionally studied the human (...) mind and ethics, separating human beings and the rest of nature ontologically. Following modern biology, the philosopher Hans Jonas has developed a philosophical biology from the perspective of hermeneutical phenomenology to understand life. With the help of his hermeneutical phenomenology, Jonas has presented an ontological theory of organism-metabolism to understand the phenomenon of life from simple living beings to the human mind in relation to nature, based on the body. Recently, the evolutionary biologist Francisco Ayala has proposed a coherent scientific and philosophical theory about biological and cultural roots for ethics, considering the evolution of human mental and intellectual capacities and the three conditions for ethical behavior as a part of human intellectual capacity, which scientifically complements and informs Hans Jonas’s philosophical biology and ethics of responsibility. (shrink)

In the paper we obtain a new characterization of the BCK-algebras which are subdirect product of BCK-chains. We give an axiomatic algebraizable extension of the BCK-calculus, by means of a recursively enumerable set of axioms, such that its equivalent algebraic semantics is definitionally equivalent to the quasivariety of BCK-algebras generated by the BCK-chains. We propose the concept of "linearization of a system" and we give some examples.

This article tries to elucidate the Deleuzian project of the reversal of Platonism in relation to that of Nietzsche. To this aim, I have made a predominantly historiographic sketch of the question in both authors. In the case of Nietzsche, I inquired about both the relationship that the reversal of Platonism presents in his philosophy with the problem of nihilism and the evolution that the topic undergoes throughout his vast intellectual production, until it reaches its final formulation. With regard to (...) Deleuze, I offer a broad overview of his work aimed at tracing the subject, from his interpretation of the Nietzschean formulation, as opposed to that of Heidegger, to the meticulous way in which it fits into his own philosophy as a shift of the essence in favour of the event as a source of singularities. (shrink)

Este artículo analiza las fuentes que Bernard Manin recupera de la filosofía antigua y sobre las que sustenta los argumentos de una parte de su teoría política, contenida fundamentalmente en su obra: _Los principios del gobierno representativo_. Tanto en sus reflexiones como en el diálogo con otros, Manin volverá en ocasiones, casi siempre de forma poco explícita, a lecturas de la democracia ateniense sobre las que surgen controversias por el sentido de su trabajo, manteniendo de ese modo su vigencia para (...) la comprensión del presente. En este artículo se mostrará que tanto el autor como su obra están atravesados por una tensión intelectual de un marcado carácter filosófico y político y que, entre dicha tensión y las disputas por una definición de qué es una buena democracia, se dibuja un espacio que arroja luz sobre tales controversias. Las controversias, concluiremos, no son resultado de malos entendidos; o si lo son, cobran sentido en el propio texto de Bernard Manin. (shrink)

Este artículo analiza los riesgos a los que está expuesta la democracia en nuestras sociedades, una vez que se constata el aumento de las actitudes antiinmigración y de los delitos de odio cometidos contra las personas migrantes. Para ello se establecerá un diálogo entre los diagnósticos de las ciencias sociales y las aportaciones de Étienne Balibar que nos permitirá mostrar que, más que en una situación de crisis coyuntural, nos encontramos ante un riesgo de retroceso democrático cuya fuente está en (...) los rasgos estructurales de la política democrática moderna y sus conflictos, siempre violentos. Por último, se mostrará que la propuesta democrática de Balibar no pretende suprimir la violencia, sino integrarla en formas políticas que tengan como horizonte la emancipación y la transformación. (shrink)

It has long been thought that gene expression is tightly regulated in multicellular eukaryotes, so that expression profiles match functional profiles. This conception emerged from the assumption that gene activity is synonymous with gene function. This paradigm was first challenged by comparative protein electrophoresis studies showing extensive differences in expression patterns among related species. The paradigm is now being challenged by evolutionary transcriptomics using microarray technologies. Most gene expression profiles display features that lack any obvious functional significance. The so‐called “ectopic” (...) expression refers to the expression of genes at times and locations where the target gene is not known to have a function. However, ectopic expression might be associated with genuine function even if this function is not essential or has yet to be ascertained. Alternatively, ectopic expression might come about as a superfluous by‐product of regulatory systems, which would call for a revision of prevailing ideas about the specificity of gene regulation. We herein review available evidence for ectopic expression and the hypotheses proposed for its origin and evolution. We propose that ectopic expression must be regarded as part of an integrated phenotypic whole. It seems likely that ectopic expression represents a leak in the evolution of regulatory systems, but one that is endowed with considerable evolutionary possibilities. BioEssays 27:592–601, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

El presente trabajo pretende explorar la actualidad del pensamiento de Baltasar Gracián a propósito del sujeto y la cultura a partir de las filosofías de Michel Foucault y José Ortega y Gasset. En primer lugar, se analizará la caracterización del sujeto graciano desde el prisma de La hermenéutica del sujeto como representante de una modernidad alternativa en que la separación entre la filosofía y la espiritualidad no llega a consumarse. En segundo lugar, se elucidará la ambivalencia de Gracián a propósito (...) del artificio en relación con la crítica de la cultura y la técnica, tomando como referencia la crisis de la capacidad de desear planteada en Meditación de la técnica como causa de la crisis cultural de la época. Ambas incursiones tratarán de poner de manifiesto la relevancia del pensamiento de Gracián en la época contemporánea, caracterizada frecuentemente como un Neobarroco. (shrink)

Este artículo analiza los riesgos a los que está expuesta la democracia en nuestras sociedades, una vez que se constata el aumento de las actitudes antiinmigración y de los delitos de odio cometidos contra las personas migrantes. Para ello se establecerá un diálogo entre los diagnósticos de las ciencias sociales y las aportaciones de Étienne Balibar que nos permitirá mostrar que, más que en una situación de crisis coyuntural, nos encontramos ante un riesgo de retroceso democrático cuya fuente está en (...) los rasgos estructurales de la política democrática moderna y sus conflictos, siempre violentos. Por último, se mostrará que la propuesta democrática de Balibar no pretende suprimir la violencia, sino integrarla en formas políticas que tengan como horizonte la emancipación y la transformación. (shrink)

Recommending the identity of bidders in public procurement auctions has a significant impact in many areas of public procurement, but it has not yet been studied in depth. A bidders recommender would be a very beneficial tool because a supplier can search appropriate tenders and, vice versa, a public procurement agency can discover automatically unknown companies which are suitable for its tender. This paper develops a pioneering algorithm to recommend potential bidders using a machine learning method, particularly a random forest (...) classifier. The bidders recommender is described theoretically, so it can be implemented or adapted to any particular situation. It has been successfully validated with a case study: an actual Spanish tender dataset which has 102,087 tenders from 2014 to 2020 and a company dataset which has 1,353,213 Spanish companies. Quantitative, graphical, and statistical descriptions of both datasets are presented. The results of the case study were satisfactory: the winning bidding company is within the recommended companies group, from 24% to 38% of the tenders, according to different test conditions and scenarios. (shrink)

Although genome‐scale analyses have provided insights into the connection between genetic variability and complex human phenotypes, much trait variation is still not fully understood. Genetic variation within repetitive elements, such as the multi‐copy, multi‐locus ribosomal DNA (rDNA), has emerged as a potential contributor to trait variation. Whereas rDNA was long believed to be largely uniform within a species, recent studies have revealed substantial variability in the locus, both within and across individuals. This variation, which takes the form of copy number, (...) structural arrangement, and sequence differences, has been found to be associated with human phenotypes. This review summarizes what is currently known about human rDNA variation, its causes, and its association with phenotypic outcomes, highlighting the technical challenges the field faces and the solutions proposed to address them. Finally, we suggest experimental approaches that can help clarify the elusive mechanisms underlying the phenotypic consequences of rDNA variation. (shrink)

Resumen. En la presente investigación se describe el análisis de sentimiento realizado en comentarios publicados en la red social de Twitter. Los datos se obtuvieron al monitorear durante 36 días la evaluación del sentimiento de los comentarios que resultaron de hacer búsquedas de catorce diferentes sistemas operativos para celular; utilizando para dicha evaluación la herramienta Twitter-Sentiment. Se encontró que los comentarios positivos y negati¬vos presentan una correlación positiva para la mayoría de los sistemas operativos utilizados en la investigación.. The present (...) research describes the sentiment analysis carried on com¬ments published on the social network Twitter. The data were obtained by monitoring over 36 days of evaluation on the sentiment of the comments that resulted from querying four¬teen different mobile operating systems; using Twitter-Sentiment for the evaluation. It was found that the positive and negative comments have a positive correlation for most operating systems used in this research. (shrink)

The goal of this essay is to expose the foundations of Enrique Dussel’s philosophy of liberation and to explain its contributions in the context of Latin-american thinking. In a postmetaphysical level of foundation, the philosophy of liberation adopts the ethos from semitic thinking and the Levinas’ hermeneutics of the «Other» with the proposal of formulate a criticism of eurocentrism and to build an alternative philosophical model. In front of the traditional paradigms of philosophy and philosophical historiography, Enrique Dussel develops a (...) new arquitectonics to report on the specificity of our thinking. (shrink)

RESUMEN Emanuel Lévinas ha desarrollado su ética de la alteridad a partir de una visión de la subjetividad como lenguaje y proximidad. Este artículo indaga en la noción de verdad como inspiración propuesta por Lévinas, la cual se presenta como una alternativa a la concepción clásica de verdad como desvelamiento y representación. Metodológicamente se analiza la obra levinasiana, en especial De otro modo que ser o más allá de la esencia, llegando a la conclusión de que la subjetividad inspirada y (...) profética, lo Otro en el mismo que interpela a la responsabilidad, abre el horizonte de una verdad que no es adecuación sino enseñanza e inquietud. La verdad no emerge como una actividad cognoscitiva del sujeto individual, sino que nace en la praxis ética como inspiración a la responsabilidad. ABSTRACT Emmanuel Lévinas has developed his ethics of otherness from a vision of subjectivity as language and proximity. This article investigates the notion of truth as inspiration proposed by Lévinas, which is presented as an alternative to the classical conception of truth as unveiling and representation. Methodologically, the Levinasian work is analyzed, especially Otherwise than being or beyond essence, reaching the conclusion that the inspired and prophetic subjectivity, the Other in the same that calls for responsibility, opens the horizon of a truth that is not adequacy but teaching and restlessness. The truth does not emerge as a cognitive activity of the individual subject, but is born in ethical praxis as an inspiration to responsibility. (shrink)

Resumen En la crítica del Cantar de los Cantares no hay acuerdo acerca del problema estructural del libro. Las teorías se dividen en aquellas que abogan por un carácter fragmentario contra otras que ven un carácter unitario de los poemas. El estudio intenta revisar esta problemática y proponer que el Cantar de los Cantares es una colección de poemas sueltos que un redactor/recopilador juntó e intentó poner en cierto orden, incorporando el conjuro de 2,7; 3,5; 5,8; 8,4 como estribillo con (...) función articuladora, de tal manera que el conjuro quedó puesto como hito divisorio entre grandes bloques poéticos que se relacionan entre sí por un tema común u otro recurso de mano redaccional, configurando así un ordenamiento estructural de todo el libro.In the criticism of the Song of Songs there is no agreement on the structural problem of the book. Theories are divided into those advocating a fragmentary against others who see a unitary character of poems. The study attempts to revise this problems and propose that the Song of Songs is a loose collection of poems that a compiler gathered and tried to give some order, incorporating the adjuration of 2, 7; 3,5; 5,8; 8,4 as refrain with articulate function, such that the adjuration was set as milestone dividing between large blocks poetic that interrelate by a common theme or other resource or literary technique thus configuring a structural arrangement of the whole book. (shrink)

La Allgemeine Psychopatologiede Karl Jaspers es una obra clave del pensamiento del siglo XX. Une de forma interdisciplinar la medicina, la psicología y la filosofía existencial. De entre los conceptos que trata, este ensayo verá la función del concepto de símbolo y a través de él la función de la Filosofía como guía de la Psiquiatría y de la Psicopatología en general. En la Psiquiatría contemporánea cada vez se da más importancia a la “simbolización” como concepto clave bajo el que (...) el sujeto humano interpreta su existencia. El símbolo es un esquema de realidad que se construye y reconstruye continuamente a través de las experiencias del ser humano. Puede decirse entonces que, a través del símbolo, el ser humano construye su mundo. En esa construcción, la Filosofía puede suponer una ayuda si se plantea como “ansia de saber” o, en su lugar, como una rémora si se presenta como una totalidad omnicomprehensiva inflexible bajo la que subsumen todas las experiencias de la vida. (shrink)

The paper presents a teaching experience implemented in two Sociology of Work courses at two Spanish universities. The teaching practice consists of the leisurely, reflective and critical reading of a classic text of the Sociology of Work, after which the students must prepare a mind map, that is, a graphic representation in which ideas are schematically organized and associated. The analysis of the students’ responses to a questionnaire allows us to affirm that the practice of mind maps is a creative, (...) visual and useful method of synthesizing and memorizing a classic sociological text. (shrink)

Nowadays, the quality standards of higher education institutions pay special attention to the performance and evaluation of the students. Then, having a complete academic record of each student, such as number of attempts, average grade and so on, plays a key role. In this context, the existence of missing data, which can happen for different reasons, leads to affect adversely interesting future analysis. Therefore, the use of imputation techniques is presented as a helpful tool to estimate the value of missing (...) data. This work deals with the academic records of engineering students, in which imputation techniques are applied. More specifically, it is assessed and compared to the performance of the multivariate imputation by chained equations methodology, the adaptive assignation algorithm based on multivariate adaptive regression splines and a hybridization based on self-organisation maps with Mahalanobis distances and AAA algorithm. The results show that proposed methods obtain successfully results regardless the number of missing values, in general terms. (shrink)

This paper analyses the place of sortition in the political philosophy of Jacques Rancière. The idea of sortition is linked to a philosophical reflection on arithmetic equality and geometric equality. Thus, starting from an important work of Cornelius Castoriadis in this sense, we will analyze below the relationship of Rancière’s political philosophy with equality. Finally we will analyze the sortition and the place it occupies in his work. Bernard Manin’s work on ancient democracies and systems of representative government will help (...) us contextualize Rancière’s proposals on the use of random selection in politics. (shrink)

El presente estudio propone un enfoque crítico de la cuestión del mal y del sufrimiento humano. En el marco del pensamiento ético de Levinas y desde una nueva perspectiva respecto de la concepción actual del lenguaje y del cuerpo, pretendemos cuestionar todas las formas de racionalismo y comprensión metafísica acerca del dolor y del sufrimiento humano. El propósito del presente estudio consiste en delinear una nueva forma de comportamiento en torno a la cuestión del mal y la debilidad humana, buscando (...) alternativas conceptuales para esclarecer este complejo problema ético. (shrink)