Unit Matrix

Math Glossary

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This glossary is far from complete. We are constantly adding math terms.
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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]

Web Resources

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