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.
Principal ideal theorem Principal ideal theorem In mathematics, the principal ideal theorem of class field theory, a branch of algebraic number theory says that extending ideals gives a mapping on the class group of an algebraic number field to the class group of its Hilbert class field, which sends all ideal classes to the class of a principal ideal. The phenomenon has also been called "principalization", or sometimes "capitulation". For any algebraic number field "K" and any ideal "I" of the ring of integers of "K", if "L" is the Hilbert class field of "K", then is a principal ideal α"O", for "O"