Set Theory
In group and set theory, many algebraic structures are called commutative when certain operands satisfy the commutative property. In higher branches of mathematics, such as analysis and linear algebra the commutativity of well known operations (such as addition and multiplication on real and complex numbers) is often used (or implicitly assumed) in proofs.
Read more about this topic: Commutative Property
Famous quotes containing the words set and/or theory:
“The ladies understood each other, in the careful way that ladies do once they understand each other. They were rather a pair than a couple, supporting each other from day to day, rather a set of utile, if ill-matched, bookends between which stood the opinion and idea in the metaphorical volumes that both connected them and kept them apart.”
—Alexander Theroux (b. 1940)
“The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals.”
—Thomas Henry Huxley (1825–95)