A. Razmadze Mathematical Institute, Z. Rukhadze st. 1, 380093 Tbilisi, Republic of Georgia kokil@imath.acnet.ge
Abstract: In our lecture we are going to present a survey of recent results and new aspects in weight theory. The discussion will concern the following problems:
\item{1.} Solutions of two-weight problems for integral transforms with positive kernel and maximal functions on homogeneous type spaces.
\item{2.} Criteria for weighted Orlicz class inequalities for maximal functions and singular integrals on homogeneous type spaces.
\item{3.} Two-weight estimates for singular integrals on homogeneous type groups and multipliers of Fourier transforms.
\item{4.} Applications to the Dirichlet and Riemann-Hilbert problems for domains with non-smooth boundaries.
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