Recently V. Kokilashvili, N. Samko, and S. Samko have proved a sufficient condition for the boundedness of the Cauchy singular integral operator on variable Lebesgue spaces with radial oscillating weights over Carleson curves. This condition is formulated in terms of Matuszewska-Orlicz indices of weights. We prove a partial converse of their result.
We prove the boundedness properties for some multilinear operators related to
certain integral operators from Lebesgue spaces to Orlicz spaces. The
operators include Calder?n-Zygmund singular integral operator,
Littlewood-Paley operator and Marcinkiewicz operator.
In this paper, the weighted boundedness of the Toeplitz type operator
associated to some singular integral operator with non-smooth kernel on
Lebesgue spaces are obtained. To do this, some weighted sharp maximal
function inequalities for the operator are proved.
AbstractLet MX,w(ℝ) denote the algebra of the Fourier multipliers on a separable weighted Banach function
space X(ℝ,w).We prove that if the Cauchy singular integral operator S is bounded on X(ℝ, w), thenMX,w(ℝ)
is continuously embedded into L∞(ℝ). An important consequence of the continuous embedding MX,w(ℝ) ⊂
L∞(ℝ) is that MX,w(ℝ) is a Banach algebra.