On orthogonal tensors and best rank-one approximation ratio

As is well known, the smallest possible ratio between the spectral norm and the Frobenius norm of an m × n matrix with m ≤ n is 1/%m and is (up to scalar scaling) attained only by matrices having pairwise orthonormal rows. In the present paper, the smallest possible ratio between spectral and Froben...

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Autors principals: Li, Z, Nakatsukasa, Y, Soma, T, Uschmajew, A
Format: Journal article
Idioma:English
Publicat: Society for Industrial and Applied Mathematics 2018