Direct Product (Set)

The direct product of two sets and is defined to be the set of all points where and . Thedirect product is denoted or and is also called the Cartesian Product, since it originatedin Descartes' formulation of analytic geometry. In the Cartesian view, points in the plane are specifiedby their vertical and horizontal coordinates, with points on a line being specified by just one coordinate. The mainexamples of direct products are Euclidean 3-space (, where are the Real Numbers), and the plane ().

• Poset
• Poset Dimension
• Position Four-Vector
• Position Vector
• Positive
• Positive Definite Function
• Positive Definite Matrix
• Positive Definite Quadratic Form
• Positive Definite Tensor
• Positive Integer
• Positive Semidefinite Matrix
• Positive Semidefinite Quadratic Form
• Postage Stamp Problem
• Posterior Distribution
• Postnikov System
• Postulate
• Potato Paradox
• Potential Function
• Potential Theory
• Pothenot Problem
• Poulet Number
• Power
• Power Center
• Power (Circle)
• Power Curve