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Re: Displaying Mathematica's Global rules

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

In a message dated 12/20/01 4:52:36 AM, BlimbaumJE at ncsc.navy.mil 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 order....so 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
>next
>part of the 
>
>exercise which showed you how you to find out how Mathematica stored the
>rules....so I typed in   ?d expecting to see the rules   but all Mathematica
>
>
>gave back was 'Global 'd' .....now 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
>are
>the rules? 

Try

?Subscript


Bob Hanlon
Chantilly, VA  USA