Article ID Journal Published Year Pages File Type
4639631 Journal of Computational and Applied Mathematics 2012 10 Pages PDF
Abstract

The value of a contingent claim under a jump-diffusion process satisfies a partial integro-differential equation (PIDE). We localize and discretize this PIDE in space by the central difference formula and in time by the second order backward differentiation formula. The resulting system Tnx=b in general is a nonsymmetric Toeplitz system. We then solve this system by the normalized preconditioned conjugate gradient method. A tri-diagonal preconditioner LnLn is considered. We prove that under certain conditions all the eigenvalues of the normalized preconditioned matrix (Ln−1Tn)∗(Ln−1Tn) are clustered around one, which implies a superlinear convergence rate. Numerical results exemplify our theoretical analysis.

Related Topics
Physical Sciences and Engineering Mathematics Applied Mathematics
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