Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2001
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2001

[Date Index] [Thread Index] [Author Index]

Search the Archive

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


  • Prev by Date: RE: Re: NDSolve-memory
  • Next by Date: RE: Urgent Plot problem
  • Previous by thread: Displaying Mathematica's Global rules
  • Next by thread: Re: Displaying Mathematica's Global rules