More Numerically Accurate Algorithm for Stiff Matrix Exponential
Teddy Lazebnik,
Svetlana Bunimovich-Mendrazitsky
Abstract:In this paper, we propose a novel, highly accurate numerical algorithm for matrix exponentials (MEs). The algorithm is based on approximating Putzer’s algorithm by analytically solving the ordinary differential equation (ODE)-based coefficients and approximating them. We show that the algorithm outperforms other ME algorithms for stiff matrices for several matrix sizes while keeping the computation and memory consumption asymptotically similar to these algorithms. In addition, we propose a numerical-error- and… Show more
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