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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.

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Graphs with circulant distance matrices

Any circulant graph has this property. A circulant graph is a graph that has an automorphism that's a cyclic permutation of its vertices. If you apply permute the rows and columns of the distance ma …
Zsbán Ambrus's user avatar