Let S(A) denote the orbit of a complex or real matrix A under a certain equivalence relation such as unitary similarity, unitary equivalence, unitary congruences etc. Efficient gradient-flow ...
SIAM Journal on Numerical Analysis, Vol. 21, No. 2 (Apr., 1984), pp. 352-362 (11 pages) We characterize the class CG(s) of matrices A for which the linear system Ax = b can be solved by an s-term ...
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