Source: /cirosantilli/dirac-delta-function

= Dirac delta function
{c}
{wiki}

The "0-width" pulse <distribution (mathematics)> that integrates to a step.

There's not way to describe it as a classical <function (mathematics)>, making it the most important example of a <distribution (mathematics)>.

Applications:
* <position operator> in <quantum mechanics>. It's not a coincidence that the function is named after <Paul Dirac>.