You are working with the text-only light edition of "H.Lohninger: Teach/Me Data Analysis, Springer-Verlag, Berlin-New York-Tokyo, 1999. ISBN 3-540-14743-8". Click here for further information.
| You are working with the text-only light edition of "H.Lohninger: Teach/Me Data Analysis, Springer-Verlag, Berlin-New York-Tokyo, 1999. ISBN 3-540-14743-8". Click here for further information.
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Table of Contents  Math Background Matrices Identity Matrix |
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| See also: fundamentals |   |
A matrix which exclusively consists of zeroes except the principal diagonal,
is called a diagonal matrix. It is usually denoted by diag(a11,
a22, ..., ann). The matrix diag(1, 1,..., 1) with
n 1s is called the identity matrix of order n. We denote the identity matrix
of order n by I, or if the order is relevant, by In.
Last Update: 2005-Jul-16