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math.NA2026
Recursive expansion of the matrix step function using polynomials of degree eight
Emanuel H. Rubensson, Elias Jarlebring, Gustaf Lorentzon
We consider the problem of efficiently computing the matrix step function of a large dense symmetric matrix. To this end, we introduce a recursive polynomial expansion method in wh…
math.NA2025
The Polynomial Set Associated with a Fixed Number of Matrix-Matrix Multiplications
Elias Jarlebring, Gustaf Lorentzon
We consider the problem of computing matrix polynomials , where is a large dense matrix, with as few matrix-matrix multiplications as possible. More precisely, let $Î _{2…