Estimativos L^2 para una clase de operadores pseudodiferenciales de?nidos en el toro

摘要

In this work we establish?L 2? estimates from pseudo-di?erential operators de?ned on the torus. Such operators arise from the study of operators?on locally compact abelian groups. Keywords : Pseudo-di?erential operators,?L 2? -boundedness, locally compact?groups.