| Noun | 1. | matrix algebra - the part of algebra that deals with the theory of matrices diagonalisation, diagonalization - changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal); "the diagonalization of a normal matrix by a unitary transformation" math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement algebra - the mathematics of generalized arithmetical operations |