Re: subscripted symbols
- To: mathgroup at smc.vnet.net
- Subject: [mg23469] Re: subscripted symbols
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Thu, 11 May 2000 00:54:17 -0400 (EDT)
- References: <8fb1s9$hrp@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
(*1*) A={Subscript[A,1]} evaluates as follows 1. The assignment A={Subscript[A,1]} is stored 2. {Subscript[A,1]} is evaluated and the value is the output from (*1*) In stage 2., the already-stored assignment to A is used; this gives a recursion The assignments a={Subscript[A,1]} B={Subscript[A,1]} Subscript[A,0]={Subscript[A,1]} do not assign a value to a part of the right side. -- Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "F. Mittermayr" <mitterma at linz.vai.co.at> wrote in message news:8fb1s9$hrp at smc.vnet.net... > Why isn't it allowed to say > > A={Subscript[A,1]} > > I get an error "$RecursionLimit::reclim: recursion depth of 256 exceeded." > > > The following statements have been accepted: > > a={Subscript[A,1]} > > B={Subscript[A,1]} > > Subscript[A,0]={Subscript[A,1]} > > > thnx for any ideas > > F. Mittermayr > > ----------------------------------- > using Mathematica 4.0 > > > -- Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "F. Mittermayr" <mitterma at linz.vai.co.at> wrote in message news:8fb1s9$hrp at smc.vnet.net... > Why isn't it allowed to say > > A={Subscript[A,1]} > > I get an error "$RecursionLimit::reclim: recursion depth of 256 exceeded." > > > The following statements have been accepted: > > a={Subscript[A,1]} > > B={Subscript[A,1]} > > Subscript[A,0]={Subscript[A,1]} > > > thnx for any ideas > > F. Mittermayr > > ----------------------------------- > using Mathematica 4.0 > > >