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Topic: dirac delta function is not a TRUE function??
Replies: 11   Last Post: Jul 19, 2011 11:08 PM

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Posts: 38
Registered: 6/3/09
Re: dirac delta function is not a TRUE function??
Posted: Jul 12, 2011 12:35 AM
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On Jul 11, 7:36 pm, Gerry Myerson <>
> In article
> <>,
>  MBALOVER <> wrote:

> > Hi all,
> > From WIKI, I learn that dirac delta function is not a true function.
> > However, I do not understand the explanation in WIKI and still get
> > confused, why it is not a TRUE function.

> > Could you please help me to understand it?
> > Thank you.
> A function from a set A to a set B is an assignment of
> an element of B to each element of A.
> If A and B are not specified, it is often assumed that both
> are taken to be the set R of real numbers.
> The Dirac delta function does not assign a real number to zero,
> and is thus not a true function.
> --
> Gerry Myerson ( (i -> u for email)

Thanks Gerry. But I am still confused. I think at x = 0, delta(x) =
infinity. If so, y = -log(0) = + infinity too. Is y = - log(x) Not a
true function?


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