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MathGroup Archive 2004

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Question about Hold

  • To: mathgroup at
  • Subject: [mg48808] Question about Hold
  • From: Daohua Song <ds2081 at>
  • Date: Thu, 17 Jun 2004 04:07:19 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

    I define a commute relation for quantum operators,i fact i learn this 
from the forum.Here is the problem.
    Commute[A^2,B], i try to use Hold[A*A] instead of A^2, then mathematica 
even won't evaluate it.!
    Any suggestion to work on the power commutation?

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