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MathGroup Archive 2005

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Re: lists of variables

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58175] Re: lists of variables
  • From: David Bailey <dave at Remove_Thisdbailey.co.uk>
  • Date: Tue, 21 Jun 2005 06:02:49 -0400 (EDT)
  • References: <d9630u$q1t$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Heath Gerhardt wrote:
> I need to make lists of variables, for example
> 
> {t1,t2,t3}
> 
> but have not been able to figure out how to make Mathematica do this. 
> Tried using
> 
> Array[t,3]
> 
> which gives
> 
> {t[1],t[2],t[3]}
> 
> but then I don't know how to set the t[i]'s in expressions similar to
> 
> F[t[1]_,t[2]_,t[3]_]:=Cos[t[1]+t[2]-t[3]]
> 
> thanks in advance
> Heath
> 
The simple answer to your question is something like:

Table[ToExpression["t" <> ToString[i]], {i, 1, 10}]

However, this is not a very usual thing to do - it might help to give 
more details of what you are trying to do.

David Bailey
http://www.dbaileyconsultancy.co.uk


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