US spelling of licence to print money

(mathematics, logic) Proof of a statement adduced by deriving a contradiction from the statement's negation.

plural of pressure group

(logic) A set of axioms and a set of inference rules which are jointly used to deduce tautologies, thereby providing proofs of them.

plural of product differentiation

(economics, marketing) Perceived differences between the product of one firm and that of its rivals so that some customers value it more.

(finance) A theory of asset pricing serving as a framework for the arbitrage pricing model.

(finance) An asset pricing model using one or more common factors to price returns. With only one factor, representing the market portfolio, it is called a single factor model. With two or more factors, it is called a multifactor model.

Alternative spelling of permanent press

A characteristic of a fabric, especially one used in clothing, often created by applying a chemical treatment and pressure, which causes lasting resistance to wrinkling and retention of pleats and creases.