Listar por tema "matrix sine"
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An efficient algorithm to compute the exponential of skew-Hermitian matrices for the time integration of the Schrödinger equation
Elsevier B.V. (2022-04-30)We present a practical algorithm to approximate the exponential of skew-Hermitian matrices up to round-off error based on an efficient computation of Chebyshev polynomials of matrices and the corresponding error analysis. ... -
Computing the matrix sine and cosine simultaneously with a reduced number of products
Elsevier (2021-05)A new procedure is presented for computing the matrix cosine and sine simultaneously by means of Taylor polynomial approximations. These are factorized so as to reduce the number of matrix products involved. Two versions ...