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.
SAS/IML Matrices and Matrix Operators. A matrix is the fundamental structure in the SAS/IML language, and the software provides many ways to create matrices. You associate a name with a matrix when you create or define the matrix.