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New page: In mathematics the '''identity matrix''' is the which does not change the size or values of a matrix under the operation of multiplication. The usually identity matrix is denoted <math>I</...
In mathematics the '''identity matrix''' is the which does not change the size or values of a matrix under the operation of multiplication. The usually identity matrix is denoted <math>I</math> or <math>I_n</math>, and the operation of multiplication is discribed as,
:<math>AI=A</math> or <math>IA=A</math>
The identity matrix is an <math>n\times n</math> with a leading diagonal of ones and all other enteries are zero,
:<math>I=\begin{bmatrix}
1 & 0 & \cdots & 0 \\
0 & 1 & \cdots & 0 \\
\vdots & \vdots & \ddots & \vdots \\
0 & 0 & \cdots & 1 \end{bmatrix}
</math>.
[[Category:mathematics]]
:<math>AI=A</math> or <math>IA=A</math>
The identity matrix is an <math>n\times n</math> with a leading diagonal of ones and all other enteries are zero,
:<math>I=\begin{bmatrix}
1 & 0 & \cdots & 0 \\
0 & 1 & \cdots & 0 \\
\vdots & \vdots & \ddots & \vdots \\
0 & 0 & \cdots & 1 \end{bmatrix}
</math>.
[[Category:mathematics]]