
This paper gives a short survey of some basic results related to estimates of fractional integrals and Fourier transforms. It is closely adjoint to our previous survey papers \cite{K1998} and \cite{K2007}. The main methods used in the paper are based on nonincreasing rearrangements. We give alternative proofs of some results. We observe also that the paper represents the mini-course given by the author at Barcelona University in October, 2014.
42 pages
Mathematics - Classical Analysis and ODEs, 46E35, 42B05 (Primary), 42B10, 46E30 (Secondary), Classical Analysis and ODEs (math.CA), FOS: Mathematics
Mathematics - Classical Analysis and ODEs, 46E35, 42B05 (Primary), 42B10, 46E30 (Secondary), Classical Analysis and ODEs (math.CA), FOS: Mathematics
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