Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1989

[Date Index] [Thread Index] [Author Index]

Search the Archive

Tensor operations in Mathematica

  • To: Mathematica Mailling list <mathgroup at>
  • Subject: Tensor operations in Mathematica
  • From: uunet!nucthy.PHYSICS.ORST.EDU!ghe (Guangliang He)
  • Date: Mon, 30 Oct 89 22:17:20 PST

In Mathematica, Inner[f, u, v, g] contracts the last index of tensor u
and first index of tensor v. But how can I contract 2 indexes of a rand
r tensor T to get a rank (r-2) tensor? When r=2, that is just the trace
of the matrix. But how about higher rank tensor?

USMAIL:   Guangliang He             |  INTERNET: ghe at PHYSICS.ORST.EDU
          Department of Physics     |  BITNET:   hegl at ORSTVM.BITNET
          Weniger Hall 301          |
          Oregon State University   |
          Corvallis, OR 97331-6507  |  PHONE:    (503) 737-4631

  • Prev by Date: Mathematica on a SE/30
  • Next by Date: Question about Transpose in Mathematica
  • Previous by thread: Mathematica on a SE/30
  • Next by thread: Question about Transpose in Mathematica