Unit Matrix

From WikiEducator
< MathGloss‎ | U
Jump to: navigation, search


This glossary is far from complete. We are constantly adding math terms.
For instructions on adding new terms, please refer to Math Glossary Main Page




Icon define.gif
Definition
Unit Matrix
  • A square matrix [math]A[/math] of order n [math]A=(a_{i,j})[/math] is said to be a unit matrix if
        [math]a_{i,j}=1 [/math] if [math]i= j[/math]
[math]a_{i,j}=0 [/math] if [math]i\ne j[/math]




Examples

      [math]\begin{pmatrix}
        1 & 0 \\
        0 & 1 
\end{pmatrix}[/math]
[math]\begin{pmatrix} 1 & 0 & 0\\ 0 & 1 & 0\\ 0 & 0 & 1 \end{pmatrix}[/math]



Icon inter.gif

Web Resources

  • Write here links for external definitions