In this article, we study pseudo-differential equations involving
semi-quasielliptic symbols over p-adics. We determine the function spaces where
such equations have solutions. We introduce the space of infinitely
pseudo-differentiable functions with respect to a semi-quasielliptic operator.
By using these spaces we show the existence of a regularization effect for
certain parabolic equations over p-adics.Comment: Accepted in Journal of Mathemaatical Analysis and its Application