Defect of a Kronecker product of unitary matrices
نویسندگان
چکیده
منابع مشابه
Defect of a Kronecker product of unitary matrices
The generalized defect D(U) of a unitary N ×N matrix U with no zero entries is the dimension of the real space of directions, moving into which from U we do not disturb the moduli |Ui,j | as well as the Gram matrix U∗U in the first order. Then the defect d(U) is equal to D(U) − (2N − 1), that is the generalized defect diminished by the dimension of the manifold {DrUDc : Dr,Dc unitary diagonal}....
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 2012
ISSN: 0024-3795
DOI: 10.1016/j.laa.2011.09.005