Narrow search


By category:

By publication type:

By language:

By journals:

By document type:


Displaying: 31-40 of 886 documents

0.026 sec

31. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Javier Echeverría La identidad de las figuras geométricas
abstract | view |  rights & permissions
The Erlanger Program of F. Klein ensures a ground for the ὲ́κθεσις procedure, which has not been much studied in the recent debates about geometrical analysis, but refers to a more general problem: the identity of a sign within a sign system, and the attempts of reduction of the mentioned system by another one. The exampIe considered is the reduction of the conics to characteristic rectangles realized by Apollonius. Starting from Klein and Apollonius, as weIl as from cartesian geometry, the figures are considered as geometric signs, and the proposed analysis of sign identity are conceived as models to follow in the analysis of identity of mathematical signs in general.
32. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Nuevas revistas: Doxa, Boletim da Sociedade Brasileira da Historia da Ciencia, Arbor
33. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Jesús-María Larrazábal Del cálculo a la teoría de conjuntos
34. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Yon Pérez Laraudogoitia Interpretación modal de la mecánica cuántica
abstract | view |  rights & permissions
In this paper, we present a (propositionaI) modal-Iogic approximation to Quantum Mechanics from a reduced and characteristic number of “crucial experiments” and so independently of the lattice of subspaces of Hilbert space. Kripke’s semantics, which determinates this system, allows to define, from a new point of view, the notions of “measurement process” and “virtual world” and admits a natural interpretation which in turn can help us to understand the measurement problem. In this way, we can attempt a “many-worlds” interpretation of Quantum Mechanics, in the way of Everett.
35. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Yosu Yurramendi Analisis de datos y lógica de enunciados
abstract | view |  rights & permissions
We understand by data analysis the full set of methods which are used to point out the structural relations between certain objects and the characteristics observed in them. In the case where these characteristics admit a process of dichotomy, the relations can be expressed in terms of propositional logic.In the present paper, we endeavour to make clear the opposition between the problems of propositional logic and those of certain model utilised in data analysis: in propositional logic, we look for a solution verified by a given set of propositions; as long as we are concerned with data analysis, we look for a solution in terms of propositions which include as proper parts the observed objects.Finally, we draw the main lines of two very used methods which can be relevant with the aid of computer: the factor analysis and the automatic classification (cluster analysis).
36. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Libros recibidos
37. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 1
Simposio Internacional sobre Genética y Conducta (Valencia)
38. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 2
Javier Echeverria Simposio Ludwig Wittgenstein
39. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 2
Javier Echeverria VI Simposio Internacional de Filosofía (UNAM, México)
40. Theoria. Revista de Teoría, Historia y Fundamentos de la Ciencia: Volume > 1 > Issue: 2
Jesús María Larrazabal Logic Colloquium ‘85