On Jul 11, 8:48 pm, MBALOVER <mbalov...@gmail.com> 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?
Well, the answer is simple. As "function" is defined in set theory, hust about no maps from R->R are true functions. So the the deltaia most often called a limit function, rather than a trye function.