Function that returns the matrix with a row and a column deleted
(Nth-Domain Matrix-Less-Row-And-Column 4 Matrix) (Nth-Domain Matrix-Less-Row-And-Column 1 Matrix) (<=> (Matrix-Less-Row-And-Column ?A ?I ?J ?B) (And (Matrix ?A) (Defined (Row ?A ?I)) (Defined (Column ?A ?J)) (Matrix ?B) (= (Row-Dimension ?B) (- (Row-Dimension ?A) 1)) (= (Column-Dimension ?B) (- (Column-Dimension ?A) 1)) (= ?B (Matrix-Less-Row (Matrix-Less-Column ?A ?J) ?I))))