Diagonal matrix

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


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