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MathGroup Archive 2007

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Re: Rule-based programming: declare variables to be a number

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80917] Re: Rule-based programming: declare variables to be a number
  • From: Hendrik van Hees <hees at comp.tamu.edu>
  • Date: Wed, 5 Sep 2007 02:59:10 -0400 (EDT)
  • References: <fb83lf$82d$1@smc.twtelecom.net> <200709020651.CAA25850@smc.twtelecom.net> <fbgmuq$9d7$1@smc.vnet.net> <fbj34p$nmq$1@smc.vnet.net>

David Bailey wrote:


> Also, it is not clear from the original question, if 'multiplication'
> is represented by Times - if it is, the expressions will get sorted
> regardless of NumericQ!

Of course the multiplication of Lie-algebra elements is not commutative,
and thus I use **, not Times.

-- 
Hendrik van Hees                        Texas A&M University
Phone:  +1 979/845-1411                 Cyclotron Institute, MS-3366
Fax:    +1 979/845-1899                 College Station, TX 77843-3366
http://theory.gsi.de/~vanhees/faq       mailto:hees at comp.tamu.edu


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