Alberto Falqués Serra (1982)
Stochastica
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In this paper it is first shown that the linear evolution equations for a generalized thermoelastic solid generate a C semigroup. Next an analysis of the long time evolution behaviour yields the some results known for classical thermoelasticity: generically, the natural state is asymptotically stable.
Lucas Jódar (1983)
Stochastica
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In this paper the analytic-spectral structure of the commutant of an invertible bilateral weighted shift operator is studied, extending known results. A class of operators is introduced, more general than the class of the rationally strictly cyclic bilateral shift [operators] which are not unicellular.
A. Bahamonde Rionda, J. S. López García (1985)
Stochastica
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Partially-additive monoids (pams) were introduced by Arbib and Manes ([1]) in order to provide an algebraic approach to the semantic of recursion in theoretical computer science. Here we extend the range of application of pams for capturing information theory concepts as componibility and sequential continuity, which arise naturally in this framework.
Josep M.ª Fortuny (1984)
Stochastica
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Probabilistic inner product spaces are studied with detail.
Lucas Jódar (1985)
Stochastica
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Estudiamos la existencia de subespacios hiperinvariantes de operadores desplazamiento bilateral ponderados e invertibles definidos sobre un espacio de Hilbert con base ortogonal {e}, n perteneciendo a Z, por la expresión T e = w e, donde las sucesiones {w} y {w}, con n = 1, ..., ∞, son convergentes.
Lucas Jódar (1984)
Stochastica
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We study the relation between the sets of cyclic vectors of an unilateral bounded below weighted shift operator T and T where S is an invariant subspace of T. It is proved that T can not be unicellular and known results are generalized.
Enrique Tarazona Ferrandis (1981)
Stochastica
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This paper deals with the existence of non constant real valued functions on a topological space X. The main results are related to closed covers and order properties.
Francesc Bofill (1982)
Stochastica
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We study the relations between simetrization by a limiting process of probabilities and functions defined on a metric compacy product space and their ergodic properties.
Carme Burgués (1981)
Stochastica
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We prove that two archimedean t-norms with equal diagonal sections and zero-sets must be identical.