On the Solvability of Integral Operators with Bihomogeneous Kernels of the Compact Type and Variable Coefficients

Abstract

In this paper, we consider the C * -algebra Ω mult (R n ) of multiplicatively weakly oscillating functions and a new wide class of kernels of compact type, which includes the class of SO(n)-invariant kernels. For the Banach algebra generated by operators with kernels of this class and coefficients from Ω mult (R n ), we construct a symbolic calculus, obtain necessary and sufficient conditions for the presence of the Fredholm property, and propose a method of calculating the index of families. Similar results are obtained for operators with bihomogeneous kernels of compact type and multiplicatively weakly oscillating coefficients, i.e., for operators from the tensor product Mp,n 1 ⊗ Mp,n 2 .