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Mathematics-Online lexicon:

Linear Systems of Equations


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A linear system of equations (LSE) over a field $ K$ is given by

$\displaystyle \begin{array}{ccccccc}
a_{1,1}x_1 & + & \cdots & + & a_{1,n}x_n ...
... & + & a_{m,n}x_n & = & b_m
\end{array}
\quad \leftrightarrow \quad
Ax = b
$

with coefficient matrix $ A = (a_{i,j})\in K^{m\times n}$, 'unknown' $ x\in K^n$ and right hand side $ b\in K^m$.

The LSE is called homogeneous if $ b = 0$. Otherwise it is called inhomogeneous.

Examples:


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  automatically generated 5/23/2011