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question about format

  • To: mathgroup at
  • Subject: [mg9028] question about format
  • From: Vanessa Portioli Rolnik <vanessa at>
  • Date: Wed, 8 Oct 1997 00:05:26 -0400
  • Sender: owner-wri-mathgroup at

Hello all,

I have a question.
My program give me a PDE, any PDE.
For example, if I have the second ordem wave equation, it will be 
write by:

u^(0,2)+a*u^(2,0)=0 ,

where, u=u(x,t)  

I would like to replace this notation by a more usual notation

@^2 u     @^2 u  
-----  + ------  =0
@ t^2     @ x^2
 where @ = 'del'

Does someone know if exist any package that do this formatation or have 
any idea how I can do this?

Please, send anwsers to vanessa at

 Thank you,

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