L'imitation est-elle l'apanage de l'espèce humaine? Dans quelle mesure l'imitation, abondamment mentionnée dans le discours colonial, est-elle révélatrice des ambiguïtés de la situation coloniale? Comment rendre intelligible l'adoption délibérée par des individus tant de comportements que de gestes imitatifs? Qu'il s'agisse des rapports entre les colons français et les "indigènes" , de la constitution de Tahiti en paradis touristique , des différences entre hip-hop français et américain , ou encore des liens entre les dimensions biologique, psychologique et culturelle de l'imitation (...) , tous les textes réunis ici révèlent l'importance du rôle joué par l'imitation dans le phénomène de la culture. (shrink)

We present an axiomatic approach for a class of finite, extensive form games of perfect information that makes use of notions like “rationality at a node” and “knowledge at a node.” We distinguish between the game theorist's and the players' own “theory of the game.” The latter is a theory that is sufficient for each player to infer a certain sequence of moves, whereas the former is intended as a justification of such a sequence of moves. While in general the (...) game theorist's theory of the game is not and need not be axiomatized, the players' theory must be an axiomatic one, since we model players as analogous to automatic theorem provers that play the game by inferring (or computing) a sequence of moves. We provide the players with an axiomatic theory sufficient to infer a solution for the game (in our case, the backwards induction equilibrium), and prove its consistency. We then inquire what happens when the theory of the game is augmented with information that a move outside the inferred solution has occurred. We show that a theory that is sufficient for the players to infer a solution and still remains consistent in the face of deviations must be modular. By this we mean that players have distributed knowledge of it. Finally, we show that whenever the theory of the game is group-knowledge (or common knowledge) among the players (i.e., it is the same at each node), a deviation from the solution gives rise to inconsistencies and therefore forces a revision of the theory at later nodes. On the contrary, whenever a theory of the game is modular, a deviation from equilibrium play does not induce a revision of the theory. (shrink)

In this paper we apply the idea of Revision Rules, originally developed within the framework of the theory of truth and later extended to a general mode of definition, to the analysis of the arithmetical hierarchy. This is also intended as an example of how ideas and tools from philosophical logic can provide a different perspective on mathematically more “respectable” entities. Revision Rules were first introduced by A. Gupta and N. Belnap as tools in the theory of truth, and they (...) have been further developed to provide the foundations for a general theory of (possibly circular) definitions. Revision Rules are non-monotonic inductive operators that are iterated into the transfinite beginning with some given “bootstrapper” or “initial guess.” Since their iteration need not give rise to an increasing sequence, Revision Rules require a particular kind of operation of “passage to the limit,” which is a variation on the idea of the inferior limit of a sequence. We then define a sequence of sets of strictly increasing arithmetical complexity, and provide a representation of these sets by means of an operator G(x, φ) whose “revision” is carried out over ω2 beginning with any total function satisfying certain relatively simple conditions. Even this relatively simple constraint is later lifted, in a theorem whose proof is due to Anil Gupta. (shrink)

It has been observed that whereas painters and musicians are likely to be embarrassed by references to the beauty in their work, mathematicians instead like to engage in discussions of the beauty of mathematics. Professional artists are more likely to stress the technical rather than the aesthetic aspects of their work. Mathematicians, instead, are fond of passing judgment on the beauty of their favored pieces of mathematics. Even a cursory observation shows that the characteristics of mathematical beauty are at variance (...) with those of artistic beauty. For example, courses in art appreciation are fairly common; it is however unthinkable to find any mathematical beauty appreciation courses taught anywhere. The purpose of the present paper is to try to uncover the sense of the term beauty as it is currently used by mathematicians. (shrink)

Describing and defining what 'Japan style' is, this book explores specific achievements in Japanese art and architecture, offering an analysis of the Japanese culture, its vision of the world and of humankind.

An application of Narrative Knowledge Representation Language (NKRL) techniques on (declassified) ‘terrorism in Southern Philippines’ documents has been carried out in the context of the IST Parmenides project. This paper describes some aspects of this work: it is our belief, in fact, that the Knowledge Representation techniques and the Intelligent Information Retrieval tools used in this experiment can be of some interest also in an ‘Ontological Modelling of Legal Events and Legal Reasoning’ context.

In the paper it is argued that bridging the digital divide may cause a new ethical and social dilemma. Using Hardin's Tragedy of the Commons, we show that an improper opening and enlargement of the digital environment (Infosphere) is likely to produce a Tragedy of the Digital Commons (TDC). In the course of the analysis, we explain why Adar and Huberman's previous use of Hardin's Tragedy to interpret certain recent phenomena in the Infosphere (especially peer-to-peer communication) may not be entirely (...) satisfactory. We then seek to provide an improved version of the TDC that avoids the possible shortcomings of their model. Next, we analyse some problems encountered by the application of classical ethics in the resolution of the TDC. In the conclusion, we outline the kind of work that will be required to develop an ethical approach that may bridge the digital divide but avoid the TDC. (shrink)

Esse estudo apresenta os conceitos de documento e documentação propostos por Paul Otlet (1868-1944) presentes no âmbito da Revista do Serviço Público (RSP). Publicada desde 1937, a RSP contempla artigos nas áreas de Administração e Gestão pública, Políticas públicas e Economia do setor público, sendo considerada um importante veículo de informação no Brasil, contemporâneo ao período de efervescência do pensamento de Otlet. A pesquisa consiste numa Revisão Sistemática de Literatura (RSL) com análise documental da RSP no período entre 1951 e (...) 1975. Como procedimento de seleção dos artigos, utiliza o protocolo de pesquisa RSL elaborado por Valentim (2020). A partir do corpus de análise dos textos recuperados identifica os artigos que apresentam os conceitos de “documento” e “documentação” segundo Otlet, bem como os elementos constitutivos sobre o cenário da documentação no Brasil, na perspectiva da publicação de autores brasileiros na RSP, concluindo que os trabalhos analisados contemplam e ampliam a temática da Documentação com importantes reflexões de Otlet para a Ciência da Informação no Brasil. (shrink)

Offers a glimpse into the world of science and technology between 1950 and 1990 as seen through the eyes of a mathematician, and debunks various myths of scientific philosophy. Portrays some of the great scientific personalities of the period, including Stanislav Ulam, who patented the hydrogen bomb, and Jack Schwartz, one of the founders of computer science. Also discusses phenomenology of mathematics, and philosophy and computer science. Includes book reviews. For students and academics. Annotation copyright by Book News, Inc., Portland, (...) OR. (shrink)

Some of the foundations of Heyes’ radical reasoning seem to be based on a fractional selection of available evidence. Using an ethological perspective, we argue against Heyes’ rapid dismissal of innate cognitive instincts. Heyes’ use of fMRI studies of literacy to claim that culture assembles pieces of mental technology seems an example of incorrect reverse inferences and overlap theories pervasive in cognitive neuroscience.

In this paper we show that the Gupta-Belnap systems S# and S* are П12. Since Kremer has independently established that they are П12-hard, this completely settles the problem of their complexity. The above-mentioned upper bound is established through a reduction to countable revision sequences that is inspired by, and makes use of a construction of McGee.

Tomo I. Religione ed eterodossia, Normatiavità e non conformismo: Dallo gnosticismo al Romanticismo nelle prime tre edizioni -- Tomo II. Appendice alla IV edizione -- Appendice alla V edizone -- Dopo e a lato, Rassegna bibliografica ragionata sulle origini dell'Islam e la loro importanza nel determinarne i succesivi sviluppi -- Marginalia.

A generalized Onsager reciprocity theorem emerges as an exact consequence of the structure of the nonlinear equation of motion of quantum thermodynamics and is valid for all the dissipative nonequilibrium states, close and far from stable thermodynamic equilibrium, of an isolated system composed of a single constituent of matter with a finite-dimensional Hilbert space. In addition, a dispersion-dissipation theorem results in a precise relation between the generalized dissipative conductivity that describes the mutual interrelation between dissipative rates of a pair of (...) observables and the codispersions of the same observables and the generators of the motion. These results are presented together with a review of quantum thermodynamic postulates and general results. (shrink)

Gian Aldo Antonelli and Cristina Bicchieri. Backwards Forwards Induction.

Gian Aldo Antonelli and Cristina Bicchieri. Forward Induction.

A partire da testi profondamente diversi come il Canzoniere petrarchesco e una raccolta di scritti autobiografici di pazienti oncologiche, l'autore compie un'indagine sul concetto di speranza, in particolare sulla sua dimensione temporale e sulla sua connessione con l'attivazione del pensiero. Con riferimenti teorici eterogenei che vanno da Bloch a Borgna, da Minkowski a Marcel, da Demetrio a Bénasayag e Schmit, dalla psicoanalisi alla teologia biblica e alla sociologia, si indagano gli aspetti regressivi e quelli evolutivi della speranza considerata come proiezione (...) del futuro nel presente che influisce sull'elaborzione del proprio passato personale. Infine si osserva come il tempo della contemporaneitÀ sia impermeabile alla speranza, che sopravvive solo in ambiti quali la scrittura, la creativitÀ, la lentezza, il silenzio nei quali ci si puň ancora prendere cura di sé. (shrink)

This study aims at ascertaining the existence of an organic legal policy in marriage matters, one which was followed by Roman Emperors in the IV and V centuries, in particular by Constantine. It is also aimed at showing that this policy corresponded to Christian ideas as expressed by various Church Fathers. This research was carried out in a careful way with attention to the chronology of the writings examined, and with a comparative analysis of every single essay that was subsequently (...) treated. (shrink)