Operadores pseudodiferenciales definidos en
medidas de Borel

DUVÁN CARDONA^*

Universidad del Valle, Departamento de Matemáticas, A.A 25360, Cali, Colombia.

Resumen. En este trabajo se introduce un tipo de operadores pseudodiferenciales definidos en medidas de Borel. Clásicamente la definición de operadores pseudodiferenciales se extiende al espacio de las distribuciones temperadas; sin embargo, en su representación no interviene el análisis de Fourier en espacios de medidas. El objetivo principal es definir tales operadores en un ángulo diferente y establecer resultados de continuidad entre espacios normados adecuados, además de proporcionar una conexión con la teoría de operadores pseudodiferenciales con símbolos en las clases definidas en ℝⁿ y el toro Tⁿ.

Palabras claves: Operadores pseudodiferenciales,Medidas de Borel, Teorema de Radon-Nikodým, Continuidad y compacidad de operadores, Distribuciones, Operadores elípticos.
MSC2010: 47G30, 65R10.

Pseudo-differential operators defined
on Borel measures

Abstract. In this paper we introduce a type of pseudo-differential operators defined on Borel measures. Classically the definition of pseudo-differential operators extends the tempered distributions space, but in its representation does not intervene the Fourier analysis in measures spaces. The main objective is to define such operators at a different angle and establish boundedness results on suitable normed spaces, in addition to providing a connection with the pseudo-differential operators theory with symbols in the classes defined on ℝⁿ and the torus Tⁿ.

Keywords: Pseudo-differential operators, Borel measures, Radon-Nikodým Theorem, Boundedness and compactness of operators, Distributions, Elliptic operators.

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^*E-mail: duvan.cardona@correounivalle.edu.co.
Recibido: 10 de febrero de 2013, Aceptado: 20 de mayo de 2013.