Class of the matrices with only one row
(<=> (Row-Matrix ?M) (And (Matrix ?M) (= (Row-Dimension ?M) 1)))
(Matrix ?M)
(<= (Row-Dimension $X 1) (Row-Matrix $X)) (<=> (Row-Matrix ?M) (And (Matrix ?M) (= (Row-Dimension ?M) 1))) (Nth-Domain Row 3 Row-Matrix) (=> (= (Row ?M ?I) ?L) (Row-Matrix ?L))