Pringle History. The Pringle Clan has been recorded since 1270, an early form of the name being Hoppringill. The family held many lands around Galashiels, where the name is first recorded in a charter granted during the reign of Alexander III.
Definition of MATRIX ALGEBRA. : generalized algebra that deals with the operations and relations among matrices.
They had a general procedure equivalent to solving quadratic equations, although they recognized only one root and that had to be positive. The derived characteristic equation for matrix W (Appendix) is a quadratic equation whose roots are the values of [lambda], [lambda]1, and [lambda]2. An application of eigenvector scaling method to currency exchange rate data in short-term forecasting.