Batting (cricket) square cut. The difference between the cut and the square drive is the height of the ball at contact: the cut is played to a ball bouncing waist high or above with the batsman standing tall, whereas the square drive is played to a wide ball of shin height with the batsman bending his knees and crouching low to make contact. A pull is a cross-batted shot played to a ball bouncing around waist height by swinging the bat in a horizontal arc in front of the body, "pulling" it around to the leg side towards mid-wicket or square leg.
Structure theorem for finitely generated modules over a principal ideal domain Structure theorem for finitely generated modules over a principal ideal domain In mathematics, in the field of abstract algebra, the structure theorem for finitely generated modules over a principal ideal domain is a generalization of the fundamental theorem of finitely generated abelian groups and roughly states that finitely generated modules over a principal ideal domain can be uniquely decomposed in much the same way that integers have a prime factorization. The result provides a simple framework to understand various canonical form results for square matrices over fields. When a vector space over a field "F" has a finite generating set,