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<a accesskey="3" href="page.php?w=Dirac_measure&amp;p=2">3.Next</a>
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<p><a href="page.php?w=Image%3AHasse_diagram_of_powerset_of_3.svg">right</a>In <a href="page.php?w=mathematics">mathematics</a>, a <b>Dirac measure</b> assigns a size to a set based solely on whether it contains a fixed element x or not. It is one way of formalizing the idea of the <a href="page.php?w=Dirac_delta_function">Dirac delta function</a>, an important tool in physics and other technical fields.</p>

<p><big>Definition</big></p>
<p>A <b>Dirac measure</b> is a <a href="page.php?w=measure_%28mathematics%29">measure</a>  on a set  (with any <a href="page.php?w=sigma_algebra">{{math</a></p><p>
<a accesskey="3" href="page.php?w=Dirac_measure&amp;p=2">3.Next</a>
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