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MathGroup Archive 2005

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Re: why does this happen?

  • To: mathgroup at
  • Subject: [mg61256] Re: [mg61225] why does this happen?
  • From: Sseziwa Mukasa <mukasa at>
  • Date: Fri, 14 Oct 2005 05:53:46 -0400 (EDT)
  • References: <>
  • Sender: owner-wri-mathgroup at

On Oct 13, 2005, at 1:39 AM, Chris Chiasson wrote:

> r[Pattern[junk[stuff],_],x_]=junk[stuff]^2+x
> First element in pattern Pattern[junk[stuff],_] is not a valid  
> pattern name.

The first argument to a pattern must be a symbol, junk[stuff] is an  



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