Difference between revisions of "Identity matrix"
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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</...) |
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| − | 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, | + | 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> | :<math>AI=A</math> or <math>IA=A</math> | ||
Revision as of 01:24, June 8, 2008
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 
or 
, and the operation of multiplication is discribed as,
or 
The identity matrix is an 
with a leading diagonal of ones and all other enteries are zero,
.
