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Define a unitary map by Uek=uk for every k=1,2,…,n, where {e1,e2,…,en} is the standard basis of Cn. Then, we have n∑j=1n∑k=1|⟨uj ... ... <看更多>

I ask because most of my matrices (but not all) will be orthogonal and I wondered whether to implement some quick orthogonality check before ... ... <看更多>