1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Product of Dirac delta functions

  1. Jun 6, 2016 #1
    • OP warned about not having an attempt at a solution
    1. The problem statement, all variables and given/known data

    δ(z*-z0*)δ(z+z0)=?
    δ(z*+z0*)δ(z-z0)=?

    where 'z' is a complex variable 'z0' is a complex number
    Formula is just enough, derivation is not needed.
     
    Last edited: Jun 6, 2016
  2. jcsd
  3. Jun 6, 2016 #2

    andrewkirk

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The Dirac delta is a distribution, not a number or a function from one number field to another.
    The product of distributions is not in general well defined, see here. You can multiply a distribution by a smooth function, but not in general by another distribution.
    So the expressions above do not have a clear meaning. They are not well-defined.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Product of Dirac delta functions
  1. Dirac Delta Function (Replies: 1)

Loading...