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physics.comp-ph2020
Wigner-Smith Time Delay Matrix for Electromagnetics: Theory and Phenomenology
Utkarsh R. Patel, Eric Michielssen
Wigner-Smith (WS) time delay concepts have been used extensively in quantum mechanics to characterize delays experienced by particles interacting with a potential well. This paper…
math.NA2020★ 9 cited
Butterfly factorization via randomized matrix-vector multiplications
Yang Liu, Xin Xing, Han Guo +3
This paper presents an adaptive randomized algorithm for computing the butterfly factorization of a matrix with provided that both the matrix and its trans…