October 2018
Beginner
250 pages
12h 14m
English
It is sometimes helpful to know that a concept of matrix inversion exists for matrices that are either singular or non‐square. Where it exists, the Moore‐Penrose inverse of a matrix
(
) is the unique matrix
that satisfies the identities

where
(
) and
(
) are both symmetric. If
is a square nonsingular matrix,
fulfils the definition.
The generalized inverse approach complements a number of the ideas in the main text. It is worth taking note of the neat unification of various ...