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Re: Displaying Mathematica's Global rules

  • To: mathgroup at
  • Subject: [mg32058] Re: [mg32046] Displaying Mathematica's Global rules
  • From: BobHanlon at
  • Date: Fri, 21 Dec 2001 03:57:27 -0500 (EST)
  • Sender: owner-wri-mathgroup at

In a message dated 12/20/01 4:52:36 AM, BlimbaumJE at writes:

>   I happened to be reading a book that gave an example of implementing
>the kronecker delta symbol , i.e. define it and then see how Mathematica
>stores the rules for it and in what I typed in the rule using
>the subscript button on the palette....
>   d_subscripts_a_,b_= 0       and       d_subscripts_a_,a_ = 1     ,
>ran it a few times just to show that it works......but then i tried the
>part of the 
>exercise which showed you how you to find out how Mathematica stored the
> I typed in   ?d expecting to see the rules   but all Mathematica
>gave back was 'Global 'd' I realize 
>that the subscript button duzznt create a symbol (*  the book defined the
>delta symbol as d[x_,x_] = 1, etc. so it didnt run into this problem *
>) but
>i was 
>still puzzled......
> Mathematica ran my definitions for any values of a and b...but  where
>the rules? 



Bob Hanlon
Chantilly, VA  USA

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