Hemeroteca de la sección ‘Opinion’

Existencia e historicidad. El problema de la identidad en Martin Heidegger

Por • 10 ago, 2017 • Category: Opinion

La identidad humana puede ser interpretada de muy diversas maneras. El artículo explora, en primer lugar, los fundamentos de la crítica heideggeriana a la idea de “sujeto” como categoría apropiada para la existencia humana; en segundo lugar, y al hilo de esa crítica, señala algunos momentos relevantes que configuran la identidad pensada no ya como subiectum, sino como unidad histórico-acontecida.



Logic and Topology for Knowledge, Knowability, and Belief – Extended Abstract

Por • 3 ago, 2017 • Category: Opinion

In recent work, Stalnaker proposes a logical framework in which belief is realized as a weakened form of knowledge. Building on Stalnaker’s core insights, and using frameworks developed by Bjorndahl and Baltag et al., we employ topological tools to refine and, we argue, improve on this analysis. The structure of topological subset spaces allows for a natural distinction between what is known and (roughly speaking) what is knowable; we argue that the foundational axioms of Stalnaker’s system rely intuitively on both of these notions. More precisely, we argue that the plausibility of the principles Stalnaker proposes relating knowledge and belief relies on a subtle equivocation between an “evidence-in-hand” conception of knowledge and a weaker “evidence-out-there” notion of what could come to be known.



China en Europa:Avance estratégico, alianzas, hegemonía y “puentes” hacia América Latina

Por • 28 jul, 2017 • Category: Opinion

La Unión Europea es el mayor socio comercial de China y ésta es el segundo socio mayor de la UE. Se consolida aceleradamente la alianza estratégica que Beijing va tejiendo tanto con las potencias de la UE como con los socios comunitarios menores. Con los efectos todavía vigentes de la crisis económica mundial iniciada en 2007, y tras la decisión británica de abandonar el proyecto comunitario europeo (Brexit), el vínculo entre China y Alemania se torna núcleo de un alineamiento económico y político capaz de competir mundialmente con la declinante potencia norteamericana, y apunta a la posible conformación de un eje euroasiático Beijing-Moscú-Berlín como nuevo polo hegemónico mundial. Paralelamente, dirigencias de los países europeos con antiguo arraigo en América Latina son atraídas por la posibilidad de constituirse en intermediarias y socias activas para el arribo masivo del capital de la ascendente potencia china a la región.



La tercera guerra fría en América Latina

Por • 23 jul, 2017 • Category: Opinion

Spykman consideraba que los países caribeños, incluyendo Colombia y Venezuela, formaban una zona de influencia donde la supremacía de Estados Unidos no puede ser cuestionada. Los consideraba un mar cerrado cuyas llaves pertenecen a Estados Unidos, lo que significa que quedarán siempre en una posición de absoluta dependencia( Valor, 29/1/14). La segunda cuestión es mucho más compleja. La emergencia de nuevas burguesías en los países con gobiernos de izquierda y progresistas es un proceso dual, como lo muestran los casos brasileño y venezolano. Pueden ser un factor de poder favorable a un mundo multipolar y trabajar en contra del dominio estadunidense. Pero pueden enfrentarse, a la vez, a los procesos de empoderamiento popular que recortan su margen de acción. Llegado el caso, los nuevos burgueses están dispuestos a aliarse con sus pares para enfrentar juntos a los de abajo.



Finitistic Properties of High Complexity

Por • 20 jul, 2017 • Category: Opinion

We use fast-growing finite and infinite sequences of natural numbers and more complicated constructs to define models of hypercomputation and interpret non-arithmetic predicates, with the strongest extensions reaching full second order arithmetical truth and beyond. Since the predicates are interpreted using properties of certain natural finite structures, they are arguably finitistic.



Schumpeter y la Historia del Pensamiento Económico

Por • 16 jul, 2017 • Category: Opinion

The History Schumpeter´s of Economic Analysis, is a tour de forcé of scholarship. The display of erudition is ‘truly unbelievable. How could one man have acquired and then digested so much knowledge? Not only does the History offer two thousand years of economics, from Aristotle to Paul Samuelson, but also it ranges most expertly over all the other social sciences, history and belles lettres as well. For more than 1,100 pages the prose flows on in a way that one has come to expect from Schumpeterthe fluent style, the vivid analogy, the striking metaphor, the arresting aside. Our goal is to present the central ideas of Schumpeter on the complex relationships between Economic History and Epistemology of Science. This design has three aspects that interest us: (a) its amplitude to conceive the economy as part of the overall development of scientific knowledge; (b) its relevance applied and the examples used by the author; (c) its currently facing tremendous methodological problems facing the economy with the other sciences.



On the relation between representations and computability

Por • 2 jul, 2017 • Category: Opinion

One of the fundamental results in computability is the existence of well-defined functions that cannot be computed. In this paper we study the effects of data representation on computability; we show that, while for each possible way of representing data there exist incomputable functions, the computability of a specific abstract function is never an absolute property, but depends on the representation used for the function domain. We examine the scope of this dependency and provide mathematical criteria to favour some representations over others. As we shall show, there are strong reasons to suggest that computational enumerability should be an additional axiom for computation models. We analyze the link between the techniques and effects of representation changes and those of oracle machines, showing an important connection between their hierarchies. Finally, these notions enable us to gain a new insight on the Church-Turing thesis: its interpretation as the underlying algebraic structure to which computation is invariant.



On the impossibility of constructing a triangle given its internal bisectors

Por • 29 jun, 2017 • Category: Opinion

We give a simple proof to the fact that it is impossible to use straightedge and compass to construct a triangle given the lengths of its internal bisectors, even if the triangle is isósceles.



Towards a theory of word order. Comment on “Dependency distance: a new perspective on syntactic patterns in natural language” by Haitao Liu et al

Por • 24 jun, 2017 • Category: Opinion

Comment on “Dependency distance: a new perspective on syntactic patterns in natural language” by Haitao Liu et al



Putting Whitehead’s theory of gravitation in its historical context

Por • 8 jun, 2017 • Category: Opinion

Whitehead’s special relativistic reformulation of Einstein’s general relativistic theory of gravitation is quite close to Einstein’s 1915–1916 original with regard to mathematical formulae and empirical tests. Only highly sophisticated contemporary tests (such as the ones highlighted by Gary Gibbons and Clifford Will1 ) reveal that the two theories are not empirically equivalent, and justify physicists to favor Einstein’s theory with regard to experimental success. However, Whitehead’s 1920–1922 alternative came out of season for the physicist, and hence, it never played a significant role in the history of physics. Allowing for a common sense interpretation, its importance is mainly philosophical, but the philosophical interpretation of Whitehead’s theory is not included in the scope of the present paper.