9780387002934 - Generalized Inverses: Theory and Applications (CMS Books in Mathematics) von Ben-Israel, Adi; Greville, Thomas N.E. (3 Ergebnisse)

Zustand: New. In English.

Hardcover. Zustand: Brand New. 2nd edition. 440 pages. 9.50x6.25x1.00 inches. In Stock.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - 1. The Inverse of a Nonsingular Matrix It is well known that every nonsingular matrix A has a unique inverse, 1 denoted by A , such that 1 1 AA = A A =I, (1) where I is the identity matrix. Of the numerous properties of the inverse matrix, we mention a few. Thus, 1 1 (A ) = A, T 1 1 T (A ) =(A ) , 1 1 (A ) =(A ) , 1 1 1 (AB) = B A , T where A and A , respectively, denote the transpose and conjugate tra- pose of A. It will be recalled that a real or complex number is called an eigenvalue of a square matrix A, and a nonzero vector x is called an eigenvector of A corresponding to ,if Ax = x. 1 Another property of the inverse A is that its eigenvalues are the recip- cals of those of A. 2. Generalized Inverses of Matrices A matrix has an inverse only if it is square, and even then only if it is nonsingular or, in other words, if its columns (or rows) are linearly in- pendent. In recent years needs have been felt in numerous areas of applied mathematics for some kind of partial inverse of a matrix that is singular or even rectangular.