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A circulant matrix is a square matrix where each row has the same elements as the previous row, cyclically rotated right by one element. It is a specific kind of a square Toeplitz matrix.
4
votes
XOR circulant matrices?
The object in question is also known as the group matrix or the Dedekind matrix, and it is closely related to the Frobenius determinant theorem which was at the origin of the representation theory.