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