Estimates in the Generalized Morrey Spaces for Linear Parabolic Systems

Abstract

The purpose of this paper is to study the parabolic system $u_t^i-D_\alpha(a_{ij}^{\alpha\beta}D_\beta u^j)=-div f^i$ in the generalized Morrey Space $L_{\phi}^{2,\lambda}$ . We would like to understand the regularity of the solutions of this system. It will be shown that 1: if $a_{ij}^{\alpha\beta}\in C(\bar{Q_{T}})$ then $Du\in L_\phi^{2,\lambda}$, and 2: if $a_{ij}^{\alpha\beta}\in VMO(Q_{T})$ then $Du\in L_\phi^{2,\lambda}$. Moreover we will be able to obtain estimates on the gradient of the solutions to the system, which will tell us about the regularity of the solutions.