MathGroup Archive 2001

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  • To: mathgroup at
  • Subject: [mg30646] Operators
  • From: "MacGyver" <macgyiver at>
  • Date: Sun, 2 Sep 2001 03:58:53 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Hello. I am a newbie in Mathematica and I can't figure this out. I want to
define a differential operator p=-i \hbar \del
like the one used in quantum mechanics for momentum. But when I enter it in
the Hamiltonian (e.g. H=p^2/(2m) ) I want Mathematica to perform all the
appropriate symbolic calculations, in particular for this example, it should
convert \del^2 to \lapl. Can this be done?

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