With the purpose of introducing a useful tool for researches concerning foundations of quantum mechanics and applications to quantum technologies, here we address three quantumness quantifiers for bipartite optical systems: one is based on sub-shot-noise correlations, one is related to antibunching and one springs from entanglement determination. The specific cases of parametric downconversion seeded by thermal, coherent and squeezed states are discussed in detail.

El fin de la filosofía. -- Sobre la situación presente del pensamiento. -- Hegel. -- Sobre Soren Kierkegaard. -- La estética de Georg Lukács. -- Georg Buchner. -- Tomás Mann. -- Ernst Junger. -- Lo grotesco literario. -- Borges, el hacedor.

Illustrations and examples have always been deemed rare in the otherwise abundant materials Kant sent to be printed. In this sense, tradition has made out of the Königsbergs philosopher a rather arid writer. He himself advocated for the perks of a proper scholastic method in presenting arguments. It is thus a common place among scholars that Herr Professor valued discursive clarity over any whimsical rhetorical garments the popular thinker could have been tempted to wield in defense of his surely more (...) than dubious reasons. But even with that in mind, in Kants writings there is this persistent and everlasting metaphor regarding the activity of navigation. A metaphor going all through the Kantian philosophical enterprise: either in the form of sailing the thin air and pretending to avoid -- or surf -- any resistance, like the figure of the dove in the Critique of Pure Reason (1781); or better with the picture of the wandering unconcerned under the celestial and immeasurable vault only to discover we were lost in search for the North in What Does It Mean To Orient Oneself In Thinking?(1786), Kants critical philosophy insisted in the depiction of the task of thinking not only as a concrete one depending on facts and experience gathered -- pinpoint locations -- but also as a matter of orientation depending on the necessity of categories -- criteria, cardinal points -- of thought. If fanciful aspirations of ideas happen to take off from the objective ground irresponsibly as if empirical experience and facts had no substance at all -- it is with good reason that due operations of counterbalance should be taking place with help of the sound weight of articulated reasonable concepts based on formal and material reality. Kants theory of mind presupposes a responsibility of a subject in relation to several types of objects. The two of these epistemic extremes are intertwined and in need of each other. When it comes to orientation, leaning on some sort of inner compass, each of us would have both in regard to sensitivity, knowledge, and moral thinking which serves like a guide to the trip within all three domains, and even comes in handy to map them out. This collective volume is precisely devoted to the task of revisiting some landscapes of the Kantian thought-itinerary along the brave seas and deep into the thick forests of justified knowledge, principles of morals and judgement in aesthetics: through its pages this work has put together renowned scholars from very different traditions eager to circumnavigate again the issues and concerns of 18th Century Philosophy and the particular Kantian solution of a new branded type of metaphysical inquiry, one inquiry subject to intellectual global duties as well. (shrink)

La extraordinaria pretensión de la praxiología -- La abstracción y los límites de la imaginación paradigmática -- Epistemología y economía -- La contradicción, vicio formal o cifra de contenido? -- Nudos y vacios, el fundamento pragmático de los principios lógicos -- Ambigüedad y comunicación -- Cómo ve la ciencia un filósofo -- "Las teorías de la relatividad de Alberto Einstein y sus implicaciones filosóficas" -- Educación y lenguaje.

"El pensador vagabundo. Estudios sobre Walter Benjamin", de varios autores, más que un libro es un homenaje a la obra de este gran pensador nominado como uno de los más valiosos e influyentes escritores de la humanidad. Walter Benjamin dejó por escrito miles de páginas que trataban de todo lo posible, hablando desde su infancia hasta el cambio que produjo la fotografía en el mundo artístico. Estos textos tienen el propósito de acercar al lector a este magnífico mundo del pensamiento (...) de Walter Benjamin. Los autores van entrelazando las ideas de este filósofo con sus seguidores más lucidos del ámbito de las humanidades, y así construyen un collage de la obra de Walter Benjamin, que por un lado nos acerca a su comprensión de los conceptos básicos, como por ejemplo, el de la historia y, en cambio, por otro establecen semejanzas entre sus escritos y el arte de Andy Warhol o Roberto Bolaño. (shrink)