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Diagonalization of the finite Hilbert transform on two adjacent intervals: the Riemann-Hilbert approach
Marco Bertola1,2, Elliot Blackstone3, Alexander Katsevich4
1Department of Mathematics and Statistics, Concordia University, 1455 de Maisonneuve W., Montréal, Québec H3G 1M8 Canada.
Abstract:
In this paper we study the spectra of bounded self-adjoint linear operators that are related to finite Hilbert transforms and . These operators arise when one studies the interior problem of tomography. The diagonalization of has been previously obtained, but only asymptotically when . We implement a novel approach based on the method of matrix Riemann-Hilbert problems (RHP) which diagonalizes explicitly. We also find the asymptotics of the solution to a related RHP and obtain error estimates.
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