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Numerical method for computing Hadamard finite-part integrals with a non-integral power singularity at an endpoint (1909.11398v1)

Published 25 Sep 2019 in math.NA and cs.NA

Abstract: In this paper, we propose a numerical method of computing a Hadamard finite-part integral with a non-integral power singularity at an endpoint, that is, a finite part of a divergent integral as a limiting procedure. In the proposed method, we express the desired finite-part integral using a complex loop integral, and obtain the finite-part integral by evaluating the complex integral by the trapezoidal formula. Theoretical error estimate and some numerical examples show the effectiveness of the proposed method.

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