Add a new page:
This is an old revision of the document!
A distribution is a generalized function.
Distributions are the correct mathematical tools to describe fields in quantum field theory.
Most people associate the origin of the delta function with the great physicist Paul Dirac, but in fact, it was introduced into mathematics 100 years earlier by Fourier and Cauchy. See http://homepages.warwick.ac.uk/staff/David.Tall/pdfs/dot2010x-katz-cauchydirac.pdf