Fisher [10] and Baur [6] showed independently in the seventies that if T is a complete first-order theory extending the theory of modules, then the class of models of T with pure embeddings is stable. In [25, 2.12], it is asked if the same is true for any abstract elementary class $(K, \leq _p)$ such that K is a class of modules and $\leq _p$ is the pure submodule relation. In this paper we give some instances where this is true:Theorem.Assume (...) R is an associative ring with unity. Let $(K, \leq _p)$ be an AEC such that $K \subseteq R\text {-Mod}$ and K is closed under finite direct sums, then: •If K is closed under pure-injective envelopes, then $\mathbf {K}$ is $\lambda $ -stable for every $\lambda \geq \operatorname {LS}(\mathbf {K})$ such that $\lambda ^{|R| + \aleph _0}= \lambda $.•If K is closed under pure submodules and pure epimorphic images, then $\mathbf {K}$ is $\lambda $ -stable for every $\lambda $ such that $\lambda ^{|R| + \aleph _0}= \lambda $.•Assume R is Von Neumann regular. If $\mathbf {K}$ is closed under submodules and has arbitrarily large models, then $\mathbf {K}$ is $\lambda $ -stable for every $\lambda $ such that $\lambda ^{|R| + \aleph _0}= \lambda $.As an application of these results we give new characterizations of noetherian rings, pure-semisimple rings, Dedekind domains, and fields via superstability. Moreover, we show how these results can be used to show a link between being good in the stability hierarchy and being good in the axiomatizability hierarchy.Another application is the existence of universal models with respect to pure embeddings in several classes of modules. Among them, the class of flat modules and the class of $\mathfrak {s}$ -torsion modules. (shrink)

We study Martsinkovsky–Russell torsion modules with pure embeddings as an abstract elementary class. We give a model-theoretic characterization of the pure-injective and the Σ-pure-injective modules relative to the class of torsion modules assuming that the torsion submodule is a pure submodule. Our characterization of relative Σ-pure-injective modules extends the classical characterization of Gruson and Jenson as well as Zimmermann. We study the limit models of the class and determine when the class is superstable assuming that the torsion submodule is a (...) pure submodule. As a corollary, we show that the class of torsion abelian groups with pure embeddings is strictly stable (i.e., stable not superstable). (shrink)

We introduce the notion of a w-good \-frame which is a weakening of Shelah’s notion of a good \-frame. Existence of a w-good \-frame implies existence of a model of size \. Tameness and amalgamation imply extension of a w-good \-frame to larger models. As an application we show:Theorem 0.1. Suppose\. If \ = \mathbb {I} = 1 \le \mathbb {I} < 2^{\lambda ^{++}}\)and\is\\)-tame, then\.The proof presented clarifies some of the details of the main theorem of Shelah and avoids using (...) the heavy set-theoretic machinery of Shelah by replacing it with tameness. (shrink)

We show that certain classes of modules have universal models with respect to pure embeddings: Let R be a ring, T a first‐order theory with an infinite model extending the theory of R‐modules and (where ⩽pp stands for “pure submodule”). Assume has the joint embedding and amalgamation properties. If or, then has a universal model of cardinality λ. As a special case, we get a recent result of Shelah [28, 1.2] concerning the existence of universal reduced torsion‐free abelian groups with (...) respect to pure embeddings.We begin the study of limit models for classes of R‐modules with joint embedding and amalgamation. We show that limit models with chains of long cofinality are pure‐injective and we characterize limit models with chains of countable cofinality. This can be used to answer [18, Question 4.25].As this paper is aimed at model theorists and algebraists an effort was made to provide the background for both. (shrink)

El tema de las relaciones entre ciencia y religión es central en la obra de Ruse. No se trata de una mera curiosidad o de una cuestión tratada tangencialmente, sino que está en el corazón de sus preocupaciones intelectuales e incluso vitales (sección 1). Hay que señalar, además, que la actividad de Ruse coincide con una cierta encrucijada histórica, en la cual se enfrentan dos posiciones extremas y mutuamente hostiles, el creacionismo, por una parte, y el nuevo ateísmo, por otra (...) (sección 2). Para entender las propuestas respetuosas, matizadas y constructivas que hace Ruse, hay que situarlas en un marco teórico complejo, donde sean posibles actitudes menos burdas que el simple enfrentamiento (sección 3). Quizá la fórmula que mejor recoge las ideas de Ruse en este dominio sea la de “existencialismo darwinista”, como él mismo propone (sección 4). Por último, presentaré un resumen conclusivo de lo hallado (sección 5). (shrink)

La ética ambiental nació como justa contestación a los excesos del antropocentrismo. Sin embargo, un énfasis obsesivo en lo ético y en lo ambiental, con el consiguiente olvido de lo antropológico, puede estar dañando la vida humana, la libertad de las personas y la vida en general. Abogamos aquí por la construcción de una ecología humana que vaya más allá y más al fondo que las éticas ambientales al uso. Defendemos que el humanismo es perfectamente compatible con el reconocimiento del (...) valor inherente de todos los seres naturales. Lo hacemos basándonos principalmente en algunas ideas de Hans Jonas, aunque rechazamos su heurística catastrofista. De él retomamos la idea de que existe una responsabilidad moral hacia los demás seres vivos, empezando por los más próximos en el tiempo y en el espacio, y hacia el libre florecimiento de las personas actuales. Con ello, también, se rebaja el peso de lo ético sobre nuestra acción ecológica. Esta ha de atender principalmente a criterios experienciales, antropológicos, científicos y de sentido común. Por último, defendemos que la política, la educación y la comunicación ambiental deben orientarse directamente hacia la libertad y el desarrollo virtuoso de las personas actuales, y no hacia el control de las mismas por culpabilización. El tránsito desde la ética ambiental hacia la ecología humana —concluimos— puede ser beneficioso tanto para las personas como para la naturaleza. (shrink)

Esta pesquisa tem por objetivo realizar uma análise de projetos educacionais desenvolvidos por ONGs da RMC, tendo por cenário o período de aplicação das novas diretrizes neoliberais como tentativa de saída do capital para sua crise estrutural, sobressaindo-se a implementação da reestruturação produtiva, privatizações e a política do Estado mínimo, culminando em um processo de sociabilização, cuja crítica das formas de representação, destacando-se a ação estratégica do chamado terceiro setor e sua pedagogia do consenso, aplicadas por este Estado educador, se (...) faz imprescindível. (shrink)

Communication campaigns often highlight environmental progress to encourage further pro-environmental behaviour. Consequently, the drop in carbon emissions caused by the COVID-19 restrictions has been framed as a positive environmental outcome of the pandemic. We conducted an experimental study with a US-representative sample (N = 500) to show that raising awareness of emissions reduction has the contrary effect: an increase in moral self-concept facilitated a negative spillover, namely, it reduced climate-friendly behavioural intentions. Normative influence was able to prevent this negative spillover (...) because activating environmental norms inhibited compensatory feelings. Besides, awareness of recent emissions reduction was less likely to increase the moral self-concept of participants with a strong environmental self-identity. Our findings demonstrate that environmental progress increases moral self-concept which, in turn, could cause a negative spillover (i.e., reduce climate-friendly low-carbon behaviour and increase climate-harmful high-carbon behaviour). Normative influences and environmental self-identity can inhibit this negative spillover. (shrink)

In this work we present some reflections about the interaction of preschool children (between 3 and 5 years old) with sound-producing objects. We implemented the phenomenological approach of Alfred Schutz, who under the influence of Edmund Husserl, elaborated his own notions concerning the Lebenswelt or life-world. We present some situations of interaction with musical instruments by children that have been documented in different research on musical education in early childhood, the same ones we use to exemplify possible analyses from the (...) perspective of the phenomenology of the social world. We conclude with some remarks that conceive of Schutz’s theory as a relevant perspective for the analysis of children’s experiences with sound-producing objects. (shrink)

Although ethical decision‐making theory has evolved over the years, within the field of management, research still revolves around James Rest’s (1986) four‐step framework, dominated by a positivist epistemology and a quantitative methodology. Given that currently there is a call for a theoretical, epistemological, and methodological renovation for the enlargement and enrichment of knowledge about how decisions are morally made in organizations, this paper has a double aim. First, by showing the models’ main flaws and limitations, it critically assesses the prominent (...) theoretical models of Rest, Trevino, and Jones. Then, for decision making in organizations, the paper aims to posit a fresh moral theory that addresses the phenomenon from a comprehensive epistemological perspective. To do so, it steps back from those prominent models in order to review John Dewey’s “theory of moral life.” At the core of the proposed comprehensive theoretical framework are Dewey’s concepts of a “moral standard” and “valuation.” Finally, the paper shows how the Dewey‐based framework can both overcome the flaws and limitations that are identified in those prominent models and can enrich empirical research, therefore contributing to developing as a whole the ethical decision‐making field. (shrink)

Humans have engaged in artistic and aesthetic activities since the appearance of our species. Our ancestors have decorated their bodies, tools, and utensils for over 100,000 years. The expression of meaning using color, line, sound, rhythm, or movement, among other means, constitutes a fundamental aspect of our species' biological and cultural heritage. Art and aesthetics, therefore, contribute to our species identity and distinguish it from its living and extinct relatives. Science is faced with the challenge of explaining the natural foundations (...) of such a unique trait, and the way cultural processes nurture it into magnificent expressions, historically and ethnically unique. How do the human mind and brain bring about these sorts of behaviors? What psychological and neural processes underlie the appreciation of painting, music, and dance? How does training modulate these processes? Are humans the only species capable of aesthetic appreciation, or are other species endowed with the rudiments of this capacity? Empirical examinations of such questions have a long and rich history in the discipline of psychology, the genesis of which can be traced back to the publication of Gustav Theodor Fechner's Vorschule der Aesthetik in 1876, making it the second oldest branch in experimental psychology. The Oxford Handbook of Empirical Aesthetics brings together leading experts in psychology, neuroimaging, art history, and philosophy to answer these questions. It provides the most comprehensive coverage of the domain of empirical aesthetics to date. With sections on visual art, dance, music, and many other art forms and aesthetic phenomena, the breadth of this volume's scope reflects the richness and variety of topics and methods currently used today by scientists to understand the way our mind and brain endow us with the faculty to produce and appreciate art and aesthetics. (shrink)

This paper discusses how to define logics as deductive limits of sequences of other logics. The case of da Costa's hierarchy of increasingly weaker paraconsistent calculi, known as $ \mathcal {C}$n, 1 $ \leq$ n $ \leq$ $ \omega$, is carefully studied. The calculus $ \mathcal {C}$$\scriptstyle \omega$, in particular, constitutes no more than a lower deductive bound to this hierarchy and differs considerably from its companions. A long standing problem in the literature (open for more than 35 years) is (...) to define the deductive limit to this hierarchy, that is, its greatest lower deductive bound. The calculus $ \mathcal {C}$min, stronger than $ \mathcal {C}$$\scriptstyle \omega$, is first presented as a step toward this limit. As an alternative to the bivaluation semantics of $ \mathcal {C}$min presented thereupon, possible-translations semantics are then introduced and suggested as the standard technique both to give this calculus a more reasonable semantics and to derive some interesting properties about it. Possible-translations semantics are then used to provide both a semantics and a decision procedure for $ \mathcal {C}$Lim, the real deductive limit of da Costa's hierarchy. Possible-translations semantics also make it possible to characterize a precise sense of duality: as an example, $ \mathcal {D}$min is proposed as the dual to $ \mathcal {C}$min. (shrink)

In this article, I address a controversial aspect of Rawls’s treatment of the question of justice between generations: how the parties in the original position could be motivated to select Rawls’s preferred principle of intergenerational savings, which he dubs the just savings principle. I focus on the explanation found in his later work, where he proposes that the correct savings principle is the principle that any generation would have wanted preceding generations to have followed. By expanding upon this explanation, I (...) respond to the objection that this explanation disregards the perspective of the first generation. I demonstrate that this objection ceases to be a concern when a proper account of the parties’ reasoning is developed. What is notable about the explanation I defend is that it relies on the parties adopting maximax – not maximin – as a rule for rational decision making. Having established this intermediary conclusion, I depart with Rawls and consider what savings principle the parties would choose if given more options. Ultimately, I argue that the parties would select a principle that Rawls would have undoubtedly rejected if presented to him at face value. This is because the principle of savings I argue would be selected requires continual economic growth over generations to increase upwards indefinitely – a conclusion Rawls is explicitly trying to avoid in his theory of justice. (shrink)

This edited volume explores the different and seminal ways colours matter to philosophy. Each chapter provides an insightful analysis of one or more cases in which colours raise philosophical problems in different areas and periods of philosophy. This historically informed discussion examines both logical and linguistic aspects, covering such areas as the mind, aesthetics and the foundations of mathematics. The international contributors look at traditional epistemological and metaphysical issues on the subjectivity and objectivity of colours. In addition, they also assess (...) phenomenological problems typical of the continental tradition and contemporary problems in the philosophy of mind. The chapters include coverage of such topics as Newton’s and Goethe’s theory of light and colours, how primary qualities are qualitative and colours are primary, explaining colour phenomenology, and colour in cognition, language and philosophy. "This book beautifully prepares the ground for the next steps in our research on and philosophising about colour" Daniel D. Hutto "It is not an overstatement to say that How Colours to Philosophy is a ground breaking publication" Mazviita Chirimuuta "Anyone interested in philosophical issues about color will find it highly stimulating." Martine Nida-Rümelin "The high quality papers included in this anthology succeed admirably in enriching current philosophical thinking about colour” Erik Myin “This is certainly the most complete collection of philosophical essays on colours ever published” André Leclerc “All in all this collections represents a new milestone in the ongoing philosophical debate on colours and colour expressions” Ingolf Max. (shrink)

A central feature of experimental development economics is the use of randomized controlled trials (RCTs) to evaluate the effectiveness of prospective socioeconomic interventions. The use of RCTs in development economics raises a host of ethical issues which are just beginning to be explored. In this article, I address one ethical issue in particular: the routine use of the status quo as a control when designing and conducting a development RCT. Drawing on the literature on the principle of standard care in (...) medical research ethics, as well as considerations of distributive justice in non-ideal circumstances, I argue that the practice of using the status quo as a control is ethically justifiable. However, I add an important qualification based on the natural duty of rescue to address the concern that my account is overly permissive. (shrink)

Milton Hatoum was born in 1952 in Manaus. His family was Lebanese. He studied architecture at São Paulo University and literature in Barcelone and Paris. He is a French literature professor at Amazonas University. His two novels: Relato de um certo Oriente (1989) and Dois Irmãos (2000), won the pr..

This paper is the result of some partial research done under the title Daily education, pedagogy and the environment: constructing an ecological perspective of education, where the ethnography of pedagogical practice is one of the principal components. The pedagogical proposal is framed within the t..

O presente texto é uma investigação bibliográfica sobre a obra de Sartre, O Ser e o Nada. Delimita-se o foco em apresentar o projeto sartreano de pensar a condição humana na sua existência radical, contingente e engajada no mundo. A atenção recai sobre o problema da liberdade que não se caracteriza de forma abstrata, mas que se concretiza na ação dentro de situação existencial e histórica. O objetivo é descrever a possibilidade de se pensar, a partir da compreensão sobre a (...) condição humana, o esboço de uma ética para educação – entendida como a liberdade de criar-se a si mesmo, de maneira autêntica, enquanto ser no mundo engajado com a própria situação existencial e histórica. This is a research based on literature on work by Sartre, Being and Nothingness. Our main objective is to present the sartrean project of thinking the human condition as radically contingent and engaged existences in the world. There is attention to the problem of freedom that is not characterized in the abstract, but which is actualized in action within the historical and existential situation. The objective is to describe the possibility of considering, from the perspective of the human condition, the sketch of an ethics from education – understood as the freedom of authentically creating oneself, as a being engaged in the world within his or her own historical and existential situation. (shrink)

Genetic engineering has been a topic of discussion for over 50 years, but it is only recently that gene editing has become a reality. CRISPR biotechnologies have made gene editing much safer, precise and feasible. We have witnessed the first cases of human germline genetic modification resulting in live births, conducted by He Jiankui. In this paper, we will analyse He Jiankui’s case in relation to one of the most difficult problems in procreative ethics (or the ethics of future generations): (...) the non‐identity problem. We believe that this analysis will help us to understand the ethics involved in gene editing and hopefully allow for a better, more philosophically grounded legislation on CRISPR and other gene‐editing technologies. (shrink)

Têm sido frequentes, na história recente do Brasil, os casos de interferência da religião em discussões públicas acerca de temas morais e, também, em decisões políticas. Isso frequentemente implica decisões polêmicas em temas que vêm recebendo cada vez mais atenção. Neste trabalho, teceremos alguns comentários sobre essa situação, tendo por ponto de partida a filosofia de David Hume.

In this article, I argue that there is philosophy of science since philosophy existed. Thus, the idea that the philosophy of science was born with neopositivism is historically wrong and detrimental to the development of the philosophy of science itself. Neopositivism tried to found the philosophy of science as an anti-philosophical discipline, as a field of study that came to replace simple philosophy. The attempt was maintained for thirty years, but failed. Now, this does not mean that we cannot make (...) good philosophy of science today, but that the philosophy of science has returned to the common house of philosophy, it is gradually recovering the connection that it should never have lost with the main philosophical traditions and disciplines. (shrink)

“In the ‘interdisciplinary materialism’ theorized by Max Horkheimer and practiced by the critical-theoretical consortium of the 1930s, the critique of political economy worked both as a more general model for the critique of available knowledge and as the focal point for different disciplinary approaches. In such a constellation, the internal connection between the critical attitude and the critique of political economy also meant that ‘theory’ was the result of ‘critique’, having the critique of political economy as its model. These two (...) claims converge in that ‘theory’ was the same as producing critical diagnoses of the present time, Critical Theory’s most eminent task. Such a characterization of this first figure of Critical Theory allow us to see that the decline of the critique of political economy as a common language for collaboration from the 1940s on gave rise to a long-lasting dispute about its best substitute as the common ground for interdisciplinary research. Until today this dispute over the ‘best theory’ in the critical-theoretical field not only overshadows its most eminent aim but also threatens to blur the very distinction between Critical and Traditional contributions.”. (shrink)

An overcomplete logic is a logic that ‘ceases to make the difference’: According to such a logic, all inferences hold independently of the nature of the statements involved. A negation-inconsistent logic is a logic having at least one model that satisfies both some statement and its negation. A negation-incomplete logic has at least one model according to which neither some statement nor its negation are satisfied. Paraconsistent logics are negation-inconsistent yet non-overcomplete; paracomplete logics are negation-incomplete yet non-overcomplete. A paranormal logic (...) is simply a logic that is both paraconsistent and paracomplete. -/- Despite being perfectly consistent and complete with respect to classical negation, nearly every normal modal logic, in its ordinary language and interpretation, admits to some latent paranormality: It is paracomplete with respect to a negation defined as an impossibility operator, and paraconsistent with respect to a negation defined as non-necessity. In fact, as it will be shown here, even in languages without a primitive classical negation, normal modal logics can often be alternatively characterized directly by way of their paranormal negations and related operators. So, instead of talking about ‘necessity’, ‘possibility’, and so on, modal logics could be seen just as devices tailored for the study of (modal) negation. This paper shows how and to what extent this alternative characterization of modal logics can be realized. (shrink)

Libertarianism deals with what the law should be. In this article, we focus on what the appropriate law to punish criminals should be in a libertarian society; that is, one that respects the Non-Aggression Principle and property rights. We examine various theories of punishment and explain why some are incompatible with libertarianism. We contribute to the latest libertarian theory of punishment suggesting the necessity to take time preference into consideration. We conclude stating a limit and a limitation to libertarian punishment (...) theories. (shrink)

RESUMO Trata o presente artigo de um estudo sobre o modo como Merleau-Ponty busca extrair, da teoria freudiana dos sonhos, consequências ontológicas concernentes à vinculação expressiva entre as diferentes dimensões da experiência onírica, especificamente sobre o papel dos restos diurnos na descarga da libido, na realização do simbolismo ou, o que é a mesma coisa, na conversão do simbolismo em algo narrativo e sensível, especificamente afetivo. Conforme se mostrará, para Merleau-Ponty, seja no sonho sonhado seja no sonho relatado podemos verificar, (...) entre a dimensão imaginária introduzida pelos restos diurnos, por um lado, e a dimensão simbólica expressa como significante esquecido, por outro; uma sorte de unidade sem coincidência, uma indivisão meramente expressiva. A pergunta deste artigo é ‒ do ponto de vista ontológico ‒ de que modo a indivisão expressiva entre o sonhado e o relatado dispensa o recurso à ideia de uma interioridade transparente? ABSTRACT This article deals with a study on how Merleau-Ponty seeks to extract, from Freud’s theory of dreams, ontological consequences concerning the expressive link between the different dimensions of the dream experience, specifically on the role of daytime remains in the discharge of libido, in realization of symbolism or, what is the same thing, in the conversion of symbolism into something narrative and sensitive, specifically affective. As it will be shown, for Merleau-Ponty, whether in the dreamed dream or in the reported dream, we can verify between the imaginary dimension introduced by the daytime remains, on the one hand; and the symbolic dimension expressed as a forgotten signifier, on the other; a sort of unity without coincidence, a merely expressive indivisibility. The question of this article is - from an ontological point of view - how does the expressive division between the dreamed and the reported dispense the recourse to the idea of a transparent interiority? (shrink)

En el presente artículo se analizan los tres ejes del debate en la polémica que hace unos años han mantenido Antonio Diéguez Lucena y Francisco José Soler Gil: i) la causación mental y su posible explicación en clave naturalista, ii) los méritos y límites explicativos de una posible alternativa teísta y iii) la conveniencia o no de una metodología naturalista en filosofía.

Resumo: O artigo apresenta e discute quatro objeções que têm sido direcionadas ao socioconstrutivismo, enquanto concepção de ciência: i) sua impossibilidade teórica; ii) sua implausibilidade teórica; iii) sua irrelevância; iv) sua indesejabilidade. O artigo sustenta a inadequação das quatro objeções, sugere a importância do socioconstrutivismo, mas defende que essa posição não é nem a única nem a melhor, para nossa compreensão da ciência, porém, apenas mais uma, dentre tantas contribuições filosóficas para essa compreensão. ABSTRACT: This paper introduces and discusses four (...) objections that have been adressed to social constructivism as an approach regarding science: i) its theoretical impossibility; ii) its theoretical implausibility; iii) its irrelevance; iv) its undesirability. This paper advocates the unsuitability of the four objections, means the significance of social constructivism, but argues for that this philosophical stance is neither the only nor the best one for our understanding of the science, but instead just one of many philosophical contributions to this understanding. (shrink)

This article aims to examine the notion of pleasure as a telos of the happy life in Epicurus. Understood as the first good and inherent to the human being, pleasure is presented as the beginning and the ultimate end of a happy life. Indeed, it should be noted that it is not the pleasures of the common people that Epicurus considers as the telos of a happy life, but the pleasure that is the absence of suffering in body and soul, (...) which is named by Epicurus of katastematic pleasure or static/at rest pleasure. In this sense, two concerns guide the present work: i) that of presenting pleasure as a telos of a happy life; ii) to expose the strict meaning that the concept of pleasure assumes in Epicurean philosophy, paying attention to the distinction between pleasure in movement and pleasure at rest. The present study is based mainly on passages from the epistle to Meneceus, in some Main Maxims and Vatican Sentences, texts in which Epicurus exposes the foundations of his hedonism, as well as in the testimonies of later disciples, such as Tito Lucrécio Caro, Diogenes Laertius and Diogenes de Enoanda. (shrink)