question about format
- To: mathgroup at smc.vnet.net
 - Subject: [mg9028] question about format
 - From: Vanessa Portioli Rolnik <vanessa at icmsc.sc.usp.br>
 - Date: Wed, 8 Oct 1997 00:05:26 -0400
 - Sender: owner-wri-mathgroup at wolfram.com
 
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 icmsc.sc.usp.br
 Thank you,
 
        Vanessa