====== Distributions ====== A distribution is a generalized function. * [[http://phys.lsu.edu/graceland/faculty/oconnell/PDFfiles.sav/137.%20Distribution%20Functions%20in%20Physics%3B%20Fundamentals.pdf|DISTRIBUTION FUNCTIONS IN PHYSICS: FUNDAMENTALS]] by M. HILLERY et. al. Distributions are the correct mathematical tools to describe fields in [[theories:quantum_field_theory:canonical|quantum field theory]]. --> Does the notion "Dirac Delta Function" make any sense? # Yes, have a look at [[http://jakobschwichtenberg.com/origin-of-the-term-delta-function/|this article]]. <-- 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|WHO INVENTED DIRAC’S DELTA FUNCTION?]] MIKHAIL G. KATZ AND DAVID TALL