Linear and Multilinear Algebra. 1988;23(4):285-298. doi: 10.1080/03081088808817882 Q21.02025
Linear transformations on that preserve the Ky Fan k -norm and a remarkable special case when ( n k ) = (4, 2)
保持Ky Fan k-范数不变的线性变换,以及当(n, k) = (4, 2)时的一个引人注目的特例。
DOI: 10.1080/03081088808817882
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