Hence, we will denote an order c1, . . . , cn of the columns of a matrix as a circular order if we aim to express that there is no first or last column, but that c1 is the successor of cn.
Hence, we will denote an order c1, . . . , cn of the columns of amatrix as a circular order if we aim to express that there is no first orlast column, but that c1 is the successor of cn.