El presente trabajo de investigación tiene por objetivo reconstruir la noción de identidad práctica tanto en Aristóteles como en Leibniz, a fin de mostrar en qué medida el hannoveriano es deudor del Estagirita y en qué medida se distingue una propuesta de la otra. Para lograr esto hacemos dos cosas: por un lado, analizamos la noción aristotélica de praxis y de agencia moral a la luz de su noción de habituación; por otro lado, damos cuenta de la dimensión práctica que (...) el hannoveriano adscribe a su noción de identidad personal, a partir de sus nociones de conscientia y cualidad moral. -/- The purpose of this research is to reconstruct the notion of practical identity in both Aristotle and Leibniz in order to show to what extent, the Hanoverian is indebted with Aristotle and to what extent one proposal can be distinguished from the other. To achieve this we do two things: on the one hand, we analyze the Aristotelian notion of praxis and moral agency trough his notion of habituation; on the other hand, we notice the practical dimension that Leibniz assigns to his notion of personal identity, based on his notions of conscientia and moral quality. (shrink)

A través de esta entrevista a Alejandro Vigo, un referente obligado para quien desea profundizar en el pensamiento de autores como Kant, Aristóteles, Husserl o Heidegger, exploramos los puntos de encuentro entre estas tradiciones, a fin de esclarecer la relación entre identidad práctica, virtud y sentido. Esta entrevista a Alejandro Vigo, además de permitirnos explorar parte de su itinerario intelectual, nos da la oportunidad de reflexionar sobre los alcances y las limitaciones de las propuestas filosóficas de cada uno de estos (...) autores. (shrink)

ABSTRACTPrior research has found a relationship between perceived facial attractiveness and perceived personal trustworthiness. We examined the time course of attractiveness relative to trustworthiness evaluation of emotional and neutral faces. This served to explore whether attractiveness might be used as an easily accessible cue and a quick shortcut for judging trustworthiness. Detection thresholds and judgment latencies as a function of expressive intensity were measured. Significant correlations between attractiveness and trustworthiness consistently held for six emotional expressions at four intensities, and neutral (...) faces. Importantly, perceived attractiveness preceded perceived trustworthiness, with lower detection thresholds and shorter decision latencies. This reveals a time course advantage for attractiveness, and suggests that earlier attractiveness impressions could bias trustworthiness inferences. A heuristic cognitive mechanism is hypothesised to ease processing demands by relying on simple a... (shrink)

I provide a variation on ideas presented by Walton and Currie, elaborating the view that fictive utterances are characterized by a specific form of illocutionary force in the family of directives – a proposal or invitation to imagine. I make some points on the relation between the proposal and the current debates on intentionalist and conventionalist views, and I discuss interesting recent objections made by Stacie Friend to the related, but crucially different, Gricean view of such force advanced by Currie (...) and others. (shrink)

María Lugones was a feminist philosopher whose work spanned four decades, two continents, and multiple languages. Over the course of her career, her writing made major contributions to feminist ethics, the philosophy of race, lesbian epistemology, and decolonial thought. She passed away on July 14, 2020, after many years of poor health, leaving behind an influential legacy and a substantial body of unpublished work.

The origin of the eukaryotic cell nucleus and the selective forces that drove its evolution remain unknown and are a matter of controversy. Autogenous models state that both the nucleus and endoplasmic reticulum (ER) derived from the invagination of the plasma membrane, but most of them do not advance clear selective forces for this process. Alternative models proposing an endosymbiotic origin of the nucleus fail to provide a pathway fully compatible with our knowledge of cell biology. We propose here an (...) evolutionary scenario that reconciles both an ancestral endosymbiotic origin of the eukaryotic nucleus (endosymbiosis of a methanogenic archaeon within a fermentative myxobacterium) with an autogenous generation of the contemporary nuclear membrane and ER from the bacterial membrane. We specifically state two selective forces that operated sequentially during its evolution: (1) metabolic compartmentation to avoid deleterious co‐existence of anabolic (autotrophic synthesis by the methanogen) and catabolic (fermentation by the myxobacterium) pathways in the cell, and (2) avoidance of aberrant protein synthesis due to intron spreading in the ancient archaeal genome following mitochondrial acquisition and loss of methanogenesis. BioEssays 28: 525–533, 2006. © 2006 Wiley Periodicals, Inc. (shrink)

Business ethics is one of the most significant demands made by institutional and individual investors, who usually require the participation of the board of directors in the planning and implementation of ethical behaviour in corporations. This is done by drawing up an ethics code and then monitoring its fulfilment. This study has a dual objective: first, to analyse the role played by the composition of the board of directors, and by that we mean its independence and the diversity of its (...) members, on the implementation and scope of an EC, and, second, to detect whether the corporate governance system moderates the level of involvement of the board in ethical issues. The findings obtained from a data panel sample made up of 760 listed companies from 12 countries for the years 2003–2009 show that the largest companies with large-sized and diverse boards implement the most developed ECs. Nevertheless, the extent of involvement of the independent directors is conditioned by the level of shareholder orientation characteristic of the system of CG in the corporation’s country of origin. (shrink)

This paper will concentrate mainly on the analysis of some features present in Putnam's internal realism and in his "natural realism" that he shares with the pragmatist thinkers Peirce and James. Following the middle way which Putnam tries to reach between "reactionary metaphysics" and "irresponsible relativism," the first part of the paper deals with what is the positive insight of traditional realism, i. e., the reality of external things as independent from our mind, as it is emphasized by Putnam. It (...) also analyzes how this idea of the mind-independent character of reality has been very well worked out in Peirce's thought through the category of Secondness. The second part focuses on the right insight of relativism that Putnam wants to maintain: How our notion of reality changes and evolves together with our language, our life and our handling the world. The attention that H. Putnam pays to W. James is, also, especially important in relation to his way of understanding reality. (shrink)

The idea that natural selection acts on many levels—and not only at the level of organisms or individual genes—is increasingly accepted among biologists. However, it is not easy to reconcile this idea with the strictly “individualistic” conception of the evolutionary process that has always characterized Darwinian thought. Moreover, the individuality of some forms of life is a vague concept and therefore controversial. This is the case of Candidatus Magnetoglobus multicellularis, whose discovery immediately inspired the following question: Does the concept of (...) individuality have degrees? Alternatively, how far is this structure of prokaryotic cells from deserving to be called an organism? In this article, we propose a new conceptual scheme based on an idea of individuality that is not limited to organisms and that makes sense in terms of Darwinian evolution. In this conceptual scheme, selection at levels above that of the individual organism is interpreted as the evolutionary emergence of higher-level individuality. This proposal may serve as a basis on which to construct a promising hierarchical evolutionary theory. (shrink)

Este artigo apresenta uma revisão de literatura, que possui como objetivo investigar como o fenômeno corpolatria está inserido em publicações científicas. Teve como lócus três portais de buscas (Scielo, Portal de Periódicos da CAPES e Google Acadêmico) e recorte temporal de 2012 a 2021. Os dados foram analisados qualitativamente, no qual, averiguou-se a conceituação de corpolatria destacada na literatura e o local de origem dos estudos. A partir dos resultados, inferiu-se que a temática ainda é incipiente entre os pesquisadores brasileiros, (...) embora haja boa distribuição geográfica dos estudos. Percebeu-se que corpolatria é uma patologia da modernidade, caracterizada pelo culto exagerado do corpo, referendada como uma espécie de ditadura corporal, estabelecida pelo discurso do corpo perfeito. Disseminada pela mídia, pelas redes sociais e pela sociedade, caracteriza-se como uma patologia social à medida que causa mal-estar social, pois pode gerar consequências físicas, transtornos psicológicos e insegurança. (shrink)

Castañeda, Perry and Lewis argued that, among singular thoughts in general, thoughts about oneself ‘as oneself’—first-personal thoughts, which Lewis aptly called de se—have a distinctive character that traditional views of contents cannot characterize. Drawing on Anscombe, Annalisa Coliva has argued that a feature she calls Real Guarantee marks apart de se thoughts—as opposed to others including Immunity to Error through Misidentification that have been proposed for that role. I'll argue that, while her work points to a truly distinguishing feature of (...) the de se, we need an account of the notion other than hers and Echeverri's recent development of it. I'll offer an alternative, drawing on Léa Salje's work. Finally, I'll briefly outline how, thus understood, the Real Guarantee feature could be adequately explained by theories of de se thoughts like the one I favour, even if it is an open option to just explain it away. (shrink)

Este artículo pretende establecer los nexos y asociaciones de los conceptos fundamentales que sustentan la obra filosófica, pero sobre todo la critica literaria de Rafael Gutiérrez Girardot. Hegel y Schlegel aparecen como pilares que fundamentan sus interpretaciones criticas y sobre los cuales se abre el horizonte de América Latina; a través de autores como Jorge Luis Borges, Alfonso Reyes y César Vallejo.

Salvador, antiga capital colonial e contemporaneamente terceira maior metrópole brasileira, é a mais emblemática cidade do processo histórico brasileiro por sua densidade demográfica e cultural negras. Neste artigo fazemos uma análise teórica e empírica sobre as desigualdades socioeconômicas, sociorraciais por cor/raça e sexo para compreender as relações raciais e de gênero nos espaços concretos e simbólicos que marcaram nossa forma de organização do espaço. Os dados estatísticos e cartográficos foram baseados no Censo do IBGE 2000 e analisados socioespacialmente. Na pesquisa (...) qualitativa, utilizamos entrevistas com diversos sujeitos sociais da cidade para analisar a percepção das pessoas sobre a dinâmica social-urbana, sobre racismo, sexismo, discriminação, etc. Assim, articulamos classe, gênero, raça e espaço como categorias centrais de análise nas suas interseccionalidades para compreender como o sexismo, racismo e classismo, ao hierarquizar os indivíduos segundo atributos físicos em superiores e inferiores, são determinantes na formação sócio-histórica no Brasil. Busca-se compreender esses fenômenos como estruturantes das desigualdades socioeconômicas e sociorraciais e culturais como se expressam no espaço urbano, particularmente as territorialidades negras e femininas e seus múltiplos significados, para pensar os processos coletivos, os processos libertários, o Direito à Cidade nas perspectivas feminista, anti-racista e anti-classista. (shrink)

The concept of well-being of rural families is part of a theory under construction in which new theoretical elements are constantly being incorporated. This research aims to determine the influence of farmers’ knowledge on the well‑being of cocoa growing families in the departments of Santander, Huila, Meta and Caquetá, Colombia. Four categories of farmers were identified with different levels of knowledge in the management of cocoa cultivation obtained through a cluster analysis. The well-being of cocoa farmers, understood as the balance (...) in the capital endowment of rural households, was obtained through the application of a semi-structured interview with 49 variables of human, cultural, social, political, natural, built, and financial capitals. The results show that cocoa knowledge is heterogeneous in the study area, with a slight improvement towards harvesting, post-harvest and transformation links. There is a positive relationship between cocoa knowledge and the well-being of cocoa farming families. Thus, producers with greater integral knowledge, with emphasis on post-harvest and bean transformation links, showed greater well-being. The Random Forest analysis identified that human capital (political, social, human, and cultural) made the greatest contribution to well-being. The findings show that cocoa knowledge contributes to the well-being of rural households to the extent that it favors vertical relationships (linkages with local governments) and horizontal relationships of producers (participation of association managers, sharing knowledge with friends, neighbors and partners, and cocoa training). (shrink)

El presente artículo sostiene la siguiente hipótesis: la inmensa mayoría de las conceptualizaciones teóricas con las que, a inicios del siglo XXI, se intenta dar cuenta de la subjetividad contemporánea son explícita o subrepticiamente reelaboraciones del concepto de superhombre. De ciborgs a posthumanos, pasando por una amplia y variada gama de sujetos contemporáneos, se puede apreciar que el concepto de Übermensch aporta las claves fundamentales con las cuales deconstruir el concepto de identidad fija que pone en juego el universalismo abstracto. (...) Siguiendo la teorización de Nietzsche, estas nuevas posiciones teóricas proponen una forma particular y concreta de vida como alternativa a las dicotomías y trasmundos con que la metafísica construyó a los sujetos del pasado. Sin embargo, estas propuestas han pasado por alto algo fundamental. Para demostrarlo, proponemos una relectura de Nietzsche y de dichos conceptos con el objetivo de plantear una nueva manera de pensar sobre la vida. (shrink)

The aim of the present research was to test whether involvement in a 14-days training program in the performing arts could reduce implicit biases. We asked healthy participants to complete an Implicit Association Test to assess biased attitudes to physical illness in two separate sessions, before and after the training program. Two separate control groups matched by age, gender and educational level completed the two IAT sessions, separated by same number of days, without being involved in the training program. Results (...) showed that participants who were involved in the training program reduced their implicit bias toward illness measured through IAT in the second session. This reduction in IAT measures was not observed in the control samples, despite the two IAT measures being matched in temporal delay with the experimental group. These findings suggest that an interventional program based on the performing arts could be effective in reducing levels of implicit biases among the general population. (shrink)

Este artículo muestra los paralelismos y las divergencias del giro ontológico y de la antropología fenomenológica. Ambas corrientes, en fidelidad al dato etnográfico, comparten el rechazo al régimen de representación y ambas corrientes cuestionan los compromisos epistémicos del investigador. Sin embargo, el giro ontológico presenta una orientación conceptual, que deriva a menudo en tipología, mientras que la antropología fenomenológica atiende a las relaciones perceptivas del mundo de la vida desde una apertura hermenéutica.

La Psicología de la Sustentabilidad (PS) estudia las problemáticas hídricas considerando la relación entre disponibilidad per cápita y consumo de agua. A partir de conceptos tales como; densidad poblacional, infraestructura hídrica y provisión de agua plantea tres estilos de vida relativos al almacenamiento de agua, la reparación de fugas y el consumo hídrico. La PS advierte que las relaciones causales entre las problemáticas hídricas y los estilos de vida son relevantes si se considera el Desarrollo Local Sustentable más que regional (...) y global. A medida que las problemáticas hídricas se intensifican, procesos actitudinales y de austeridad prevalecen sobre el dispendio de agua. En contraste, las situaciones hídricas en equilibrio con el consumo residencial facilitan el dispendio. La discusión alusiva a las problemáticas hídricas y los estilos de vida permitirá construir un sistema tarifario de consumo y delimitar las políticas públicas que se requerirán en el marco de la crisis de abastecimiento y distribución que se espera en los próximos años. (shrink)

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.

En las ciencias cognoscitivas, existe una teoría con respecto a la arquitectura computacional de la mente conocida como el modularismo masivo. Esta teoría sostiene que la mente está en su mayoría constituida por mecanismos que son cognoscitivamente modulares. Algunos de los defensores de esta teoría proponen un argumento cuya conclusión es que es muy probable que mecanismos que son cognoscitivamente muy modulares sean más evolucionables que aquellos mecanismos que no son cognoscitivamente modulares. Aquí muestro que para poder defender plausiblemente esta (...) conclusión es necesario añadir a la noción de modularidad cognoscitiva la siguiente característica: "Un sistema cognoscitivo S de organismos de una población P es cognoscitivamente modular sólo si S es variacionalmente modular en P." Defiendo también la idea que una de las características que normalmente se asocian al concepto de modularidad cognoscitiva-i.e., la noción de doble disociación cognoscitiva-es muy cercana a la idea de modularidad variacional. Adicionalmente, argumento que no hay razones positivas, y sí algunas razones negativas, para pensar que las otras características usualmente asociadas al concepto de modularidad cognoscitiva-tales como la especificidad de dominio o la especialización funcional-coadyuven a la evolucionabilidad de los módulos cognoscitivos. In the cognitive sciences, there is a theory concerning the computational architecture of the mind known as massive modularity. This theory holds that the mind is constituted mostly by cognitive modules. Some of the defenders of this theory have put forward an argument whose conclusion is that it is very likely that those mechanisms that are cognitively very modular are more evolvable than mechanisms that are not cognitively modular. Here I show that a plausible defense of this conclusion requires us to add to the usual notion of cognitive modularity the following characteristic: "A cognitive system S of organism of a population P is cognitively modular only if S is variationally modular in P." I also defend the view that one of the characteristics normally associated to the concept of cognitive modularity-namely, the notion of a double dissociation-is conceptually close to the concept of variational modularity. Additionally, I argue that there are not positive reasons-while there are some negative ones-to think that the other characteristics usually associated to cognitive modularity, such as domain specificity or functional specialization, enhance the evolvability of cognitive modules. (shrink)

Este trabajo intenta delinear los ejes centrales de la concepción merleaupontyanade la naturaleza, poniendo especial atención en los últimos cursos del filósofoacerca de la historia del concepto (La nature). El análisis hace escala en lascosmologías presocráticas, la concepción aristotélica de la physis y la interpretación merleaupontyana del mecanicismo y la teleología moderna. Primeramente nos referimos a la crítica de las categorías con que tradicionalmente se hapensado a la physis, crítica fundada en su originaria adscripción a lo humanamente instituido y construido. (...) En segundo lugar, relativizamos esta crítica apartir de la posible consideración de la técnica humana como imitación y extensión de la naturaleza. La evaluación de ambos movimientos de este argumentocircular da lugar a una particular relación de Ineinander o entrelazamiento entre lo natural y lo humano. Reparamos, por último, en la necesidad enfatizadapor Merleau-Ponty de recobrar el significado primordial de la naturaleza como“suelo” y “excedente”. (shrink)

In this book Strawson is again considering topics as the existence of the exterior world, the moral attitudes, the universal... The novelty is not so in his original ideas as in the fact that these are useful to keep on completing the doctrine of a "descriptive" and "naturalist" metaphy-sick against "revisionism" such as the scepticism in its different modalities.

The origin of chordates and the consequent genesis of vertebrates were major events in natural history. The amphioxus (lancelet) is now recognised as the closest extant relative to the stem chordate and is the only living invertebrate that retains a vertebrate‐like development and body plan through its lifespan, despite more than 500 million years of independent evolution from the stem vertebrate. The inspiring data coming from its recently sequenced genome confirms that amphioxus has a prototypical chordate genome with respect to (...) gene content and structure, and even chromosomal organisation. Pushed by joint efforts of amphioxus researchers, amphioxus is now entering a new era, namely its maturation as a laboratory model, through the availability of a large amount of molecular data and the advent of experimental manipulation of the embryo. These two facts may well serve to illuminate the hidden secrets of the genetic changes that generated, among other vertebrates, ourselves. (shrink)

Sr. Rector de la Universidad BolivarianaIlustrísimas autoridadesProfesores de la UniversidadMiembros de la Comunidad universitariaRepresentantes de las organizaciones solidariasSeñoras y señoresMe siento profundamente feliz y conmovido. Feliz por haberme abierto las puertas de esta universidad y concederme esta alta distinción que no sólo culmina una amistad sino que inicia un camino de estrecha colaboración y de esperanzas entretejidas. Me honráis compañeros con vuestra acogida a este claust..

The most popular work of Francisco Sánchez, Quo nihil scitur (1581), transmits an absolutely sceptic thought. However, other writings like Carmen de Cometa anni M.D.LXXVII (1578), offer us different ideas about how Sánchez considers possible the scientific knowledge like, for example, his idea about the casual relations between natural objects.

Sovereignty was not only a theory for the proper law of a State but a way of taking away the autonomy of the prophetic spirit and subject to the dialectics of state and government interests. Sovereignty implies that there is no force that operates outside the power capable of regenerating and bring salvation to a people corrupt. Sovereignty involves the creation of a mirage, the manifestation of the free spirit of the people is a product or invention of state power. (...) The homogenization and depersonalization of the people is the result of the struggle to gain freedom and equality, but the intent for this freedom and equality does not entail the collapse of imperial force. (shrink)

The purpose of the present paper is to demonstrate a series of connections in terms of concepts and subjects between Ockham and Kant’s philosophical models that may provide a comprehensive framework for their respective insights on Law. Our main thesis postulates the existence of a continuum of certain fundamental assumptions derived from Nominalist theology and enlightened rationality that contribute to the essential unity of so-called “modern thought” and how such continuity is projected in the legal domain. In this sense, we (...) suggest the need to reflect upon the tacit Nominalism underlying Kantian criticism, which, although devoid of all theological premises, reconstructs metaphysics while preserving its basic scheme. In order to do so, our starting point is a very brief reference to the similarities between their respective theories of knowledge. We go on to analyze the structure behind moral actions according to Ockham and Kant’s doctrines. Finally, we point to certain founding principles and elements common to both doctrines in the field of legal-political thought. (shrink)

Luis Jiménez Moreno murió en octubre de 2007 a los 77 años de edad. Durante los últimos 30 años perteneció a la Universidad Complutense, de la que llegó a ser catedrático. Había estudiado en Salamanca, Roma, Valencia y Munich. Su tesis doctoral sobre el pensamiento antropológico de Nietzsche fue dirigida por Aranguren. Fue catedrático de instituto en Andújar, Ávila y Badalona, y profesor de universidad en Barcelona y Madrid. El presente artículo recoge los datos fundamentales de su vida, así como (...) toda su obra dividida en libros, artículos, ensayos, conferencias, ponencias y comunicaciones en congresos, seminarios, simposios, reuniones científicas, etc. (shrink)

Este artículo discute y analiza la formación del carácter crítico e intelectual en Rafael Gutiérrez Girardot. A partir de fuentes diversas y, en parte, inexploradas, se reconstruye el proceso de formación y ejercicio de su actividad crítica entre 1950 y 1965. Se tienen en cuenta tanto las relaciones con otros intelectuales como la influencia de los diversos contextos en los cuales se dieron dichas relaciones. Así, su participación en Cuadernos Hispanoamericanos, su correspondencia con Alfonso Reyes y con Nils Hedberg, su (...) actividad diplomática, su trabajo editorial y de traducción y, finalmente, su práctica docente, se estudian con objeto de tener un marco comprensivo. La obra crítica de Gutiérrez Girardot dista de estar comprendida y, de hecho, se precisa todavía de un exhaustivo trabajo de reconstrucción y análisis. This paper discusses and analyses the critical and intellectual nature of the work of Rafael Gutiérrez Girardot. It reproduces the process of construction and exercise of his critical activity (1950-1965), based on different sources some of them not yet very studied. The paper takes into account his relationships with other intellectuals and the influence of its different contexts. Thus, in order to get a comprehensive framework, it studies his participation in Cuadernos Hispanoamericanos, his correspondence with Alfonso Reyes and Nils Hedberg, his diplomatic activity, his work as editor and translator and finally his teaching experience. The critical work of Gutiérrez Girardot is far from being completely interpreted and this makes necessary an exhaustive work of reconstruction and analysis. (shrink)

Histamine is a multifunctional biogenic amine with relevant roles in intercellular communication, inflammatory processes and highly prevalent pathologies. Histamine biosynthesis depends on a single decarboxylation step, carried out by a PLP-dependent histidine decarboxylase activity (EC 4.1.1.22), an enzyme that still remains to be fully characterized. Nevertheless, during the last few years, important advances have been made in this field, including the generation and validation of the first three-dimensional model of the enzyme, which allows us to revisit previous results and conclusions. (...) This essay provides a comprehensive review of the current knowledge of the structural and functional characteristics of mammalian histidine decarboxylase. BioEssays 27:57–63, 2005. © 2004 Wiley Periodicals, Inc. (shrink)

El cálculo proposicional se basa proposiciones que son tautologías, antilogías y de tipo contingente, construidas con las operaciones de disyunción, conjunción, y negación, así como con el llamado condicional material para trasladar los enunciados condicionales. Con todo ello se obtiene una estructura de álgebra de Boole, que permite equiparar el cálculo proposicional al cálculo algebraico booleano. En parte, la simplificación conceptual que se obtiene resulta de ser el orden parcial del álgebra equivalente a la afirmación del condicional material. Además, con (...) tal metodología cabe ver qué partes del cálculo proposicional clásico pueden trasladarse, aun con limitaciones, a estructuras más débiles y, a la vez, más generales, como son los ortoretículos no booleanos o las álgebras de De Morgan.El cálculo proposicional trata con la deducción. Por ello, el artículo lo desarrolla a partir de un operador de consecuencias en el sentido de Tarski. Ampliado el modelo deductivo, es fácil ver otras consecuencias que las usualmente consideradas en los textos elementales; en particular, se analizan cuatro esquemas de razonamiento deductivo típicos y, entre ellos, se presta especial atención a los usuales Modus Ponens y Modus Tollens. En el caso de las estructuras algebraicas de conjuntos ‘borrosos’, ninguna es de álgebra de Boole ni siquiera de orto-retículo y sólo cabe trabajar, en algunos casos, con álgebras de De Morgan-Kleene. Por lo tanto el cálculo proposicional ‘fuzzy’ debe construirse de acuerdo con la estructura algebraica que corresponda en cada caso y una vez elegida como representación del condicional una función que verifique el Modus Ponens. (shrink)