Umberto Eco -- Stephen Jay Gould -- Jean-Claude Carrière -- Jean Delumeau.

This is the second of a series of papers that investigate fragments of quasi-Nelson logic (QNL) from an algebraic logic standpoint. QNL, recently introduced as a common generalization of intuitionistic and Nelson’s constructive logic with strong negation, is the axiomatic extension of the substructural logic |$FL_{ew}$| (full Lambek calculus with exchange and weakening) by the Nelson axiom. The algebraic counterpart of QNL (quasi-Nelson algebras) is a class of commutative integral residuated lattices (a.k.a. |$FL_{ew}$|-algebras) that includes both Heyting and Nelson algebras (...) and can be characterized algebraically in several alternative ways. The present paper focuses on the algebraic counterpart (a class we dub quasi-Nelson implication algebras, QNI-algebras) of the implication–negation fragment of QNL, corresponding to the connectives that witness the algebraizability of QNL. We recall the main known results on QNI-algebras and establish a number of new ones. Among these, we show that QNI-algebras form a congruence-distributive variety (Cor. 3.15) that enjoys equationally definable principal congruences and the strong congruence extension property (Prop. 3.16); we also characterize the subdirectly irreducible QNI-algebras in terms of the underlying poset structure (Thm. 4.23). Most of these results are obtained thanks to twist representations for QNI-algebras, which generalize the known ones for Nelson and quasi-Nelson algebras; we further introduce a Hilbert-style calculus that is algebraizable and has the variety of QNI-algebras as its equivalent algebraic semantics. (shrink)

An erudite and witty collection of Umberto Eco's essays on mass culture from the 1960s through the 1980s, including major pieces which have not been translated into English before. The discussion is framed by opposing characterizations of current intellectuals as apocalyptic and opposed to all mass culture, or as integrated intellectuals, so much a part of mass culture as to be unaware of serving it. Organized in four main parts, "Mass Culture: Apocalypse Postponed," "Mass Media and the Limits of (...) Communication," "The Rise and Fall of Counter-Cultures," and "In Search of Italian Genius," Eco looks at a variety of topics and cultural productions, including the world of Charlie Brown, distinctions between highbrow and lowbrow, the future of literacy, Chinese comic strips, whether countercultures exist, Fellini's Ginger and Fred, and the Italian genius industry. (shrink)

In this book, the Italian novelist and philosopher Umberto Eco presents a learned summary of medieval aesthetic ideas.

In today s world, the increasing progress in biotechnologies has paved the way for profound challenges to basic notions definingthe human existence. Paramount concepts, such as autonomy, dignity and the very assumption of human finitude, need to be reframed in the light of unprecedented innovations and possibilities. The multidisciplinary encounter of literature, bioethics and biolaw offers the opportunity to investigate the impacts on human life stemming from scientific potentialities and pretensions. The aim of this book is to merge the two (...) fields of bioethics and law through the literary text, by taking into consideration the transformations of the concept of persona at which we have nowadays arrived.". (shrink)

The monster is created as a marvel, as something which, like transgression itself, does not belong to the assumed natural order of things. It is a liminal creature which embodies the very boundaries humans have overreached. The latest perspectives on the concept of the monstrous are connected to the new technological experiments and to artificial intelligence. Technology problematizes the real vs the virtual, the human vs the inhuman, the concept itself of legal persona: all this sets itself within a posthuman (...) scenario. The movies Transcendence and Her perfectly epitomize these concepts, because in the former the conscience of the scientist Will is downloaded into a computer, from which he emerges as a new monstrous entity; in the latter a computer program, a voice, so artfully interacts with man as to give the impression of a reasonable and independent human being. (shrink)

As the only book-length treatment of Aquinas's aesthetics available in English, this volume should interest philosophers, medievalists, historians, critics, and ...

A collection of essays discusses such topics as the nature of perception, the semiotic links between cognition and language, and iconism, with imaginative fables featuring animal heroes to illustrate the main points.

Essays discuss poetry, communication, television, form, aesthetics, bad taste, and art.

"Eco wittily and enchantingly develops themes often touched on in his previous works, but he delves deeper into their complex nature... this collection can be read with pleasure by those unversed in semiotic theory." —Times Literary Supplement.

We look at extensions (i.e., stronger logics in the same language) of the Belnap–Dunn four-valued logic. We prove the existence of a countable chain of logics that extend the Belnap–Dunn and do not coincide with any of the known extensions (Kleene’s logics, Priest’s logic of paradox). We characterise the reduced algebraic models of these new logics and prove a completeness result for the first and last element of the chain stating that both logics are determined by a single finite logical (...) matrix. We show that the last logic of the chain is not finitely axiomatisable. (shrink)

Umberto Eco oversat af Finn Frandsen, første gang bragt i Slagmark #5.

A collection of essays discusses current issues, including spirituality, war, disenchantment, traditions, fascism, and customs, and draws from past experiences that have had a profound impact on the world today.

Why are we deeply moved by the misfortune of Anna Karenina if we are fully aware that she is simply a fictional character who does not exist in our world?But what does it mean that fictional characters do not exist? The present article is concerned with the ontology of fictional characters. The author concludes thatsuccessful fictional characters become paramount examples of the ‘real’ human condition because they live in an incomplete world what we have cognitive access to but cannot influence (...) in any way and where no deeds can be undone. Unlike all the other semiotic objects, which are culturally subject to revisions, and perhaps only similar to mathematical entities, the fictual characters will never change and will remain the actors of what they did once and forever. (shrink)

In 1754 Véron Duverger de Forbonnais published the two books of his Élemens du Commerce which, as the Avertissement stated, collected together some of the chapters the author had written for the Encyclopédie. The second edition was published in the same year with ‘quelques légères additions’. In 1765, Carlos Lemaur, a French engineer who worked in Spain from 1750 until 1785, translated the text into Spanish. The probable reason for the translation was the importance that Forbonnais attributed to the construction (...) of roads and infrastructure that enabled improved communication between the markets and an increased distribution of money to the small cities located far from big centres. The translator worked as an engineer in a number of remarkable constructions designed to enhance logistics in Spain, and shared Forbonnais’ perspective on Enlightenment principles. My analysis will focus on the translation strategies adopted by Lemaur, and on the adaptation of the source text to the target culture, following the approach taken by Theo Hermans. I will examine the equivalence between the source text and the translation, which was the result of the functionality and dynamism of the translator's technique. (shrink)

We develop an algebraic study of W.S. Cooper’s three-valued propositional logic of ordinary discourse ( $$\mathcal{O}\mathcal{L}$$ O L ). This logic displays a number of unusual features: $$\mathcal{O}\mathcal{L}$$ O L is not weaker but incomparable with classical logic, it is connexive, paraconsistent and contradictory. As a non-structural logic, $$\mathcal{O}\mathcal{L}$$ O L cannot be algebraized by the standard methods. However, we show that $$\mathcal{O}\mathcal{L}$$ O L has an algebraizable structural companion, and determine its equivalent semantics, which turns out to be a (...) finitely-generated discriminator variety. We provide an equational and a twist presentation for this class of algebras, which allow us to compare it with other well-known algebras of non-classical logics. In this way we establish that $$\mathcal{O}\mathcal{L}$$ O L is definitionally equivalent to an expansion of the three-valued logic $${\mathcal {J}}3$$ J 3 of D’Ottaviano and da Costa, itself a schematic extension of paraconsistent Nelson logic. (shrink)