Multipliers from Sobolev space $H^\al_p$ into $H^{-\al}_p$

M. I. Neiman-zade, A. A. Shkalikov

A function $q(x)$ is said to be a multiplier from the Sobolev space $H^\al_p(R^n)$ into $H^{-\al}_p(R^n)$ if the operator $Lf(x)=q(x)f(x)$ is a bounded operator from the first spac…