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<a accesskey="3" href="page.php?w=linear_matrix_inequality&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=convex_optimization">convex optimization</a>, a <b>linear matrix inequality</b> (<b>LMI</b>) is an expression of the form<br/>
: where<br/>
*  is a real vector,<br/>
*  are  <a href="page.php?w=symmetric_matrix">symmetric matrices</a> ,<br/>
*  is a generalized inequality meaning  is a <a href="page.php?w=positive_semidefinite_matrix">positive semidefinite matrix</a> belonging to the positive semidefinite cone  in the subspace of symmetric matrices .</p>

<p>This linear matrix inequality specifies a <a href="page.php?w=convex_set">convex</a></p><p>
<a accesskey="3" href="page.php?w=linear_matrix_inequality&amp;p=2">3.Next</a>
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