# Diagonal matrix

From Encyclopedia of Mathematics

A square matrix in which all entries — with the possible exception of the elements on the main diagonal — are zero.

#### Comments

I.e. an diagonal matrix over a field has the form

where the are elements of .

**How to Cite This Entry:**

Diagonal matrix.

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Diagonal_matrix&oldid=12142

This article was adapted from an original article by O.A. Ivanova (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article