Abstract

The infinite pseudo-differential operator on WM(Rn) space is introduced and its various properties are studied. A general class of symbols θ(x,ξ) is introduced and then it is proved that the pseudo-differential operator Aθφ is a continuous linear mapping from WM(Rn) into itself. An Lp(Rn)-boundedness result for the pseudo-differential operator associated with a general class of symbols σ(x,ξ) for ξ = u+it is obtained. It is shown that the pseudo-differential operator is a bounded linear operator from Lp(Rn) into Lp(Rn) for 1 < p < ∞. The Sobolev space of type Gs,p(Rn) is introduced and its properties are studied.

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