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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.

3 votes

Complexity of inverting and multiplying against a symmetric Toeplitz matrix with two repeate...

When your data have such strong structure, questions of "computational complexity" can be drastically affected on how you encode input and output, and also on which parameters you hold constant. Inver …
Jukka Kohonen's user avatar