Using the same symbol for different quantities
- To: mathgroup at smc.vnet.net
- Subject: [mg52375] Using the same symbol for different quantities
- From: Geronimo <kalymereauKILLSP at Myahoo.fr>
- Date: Thu, 25 Nov 2004 05:49:47 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi Group
I would like to define, e.g.,
y = f[x]
` z = g[y]
in such a way that when I type y I get f[x] and when I type z I get g[y],
and not g[f[x]]. For example from
Cos[y] + Exp[z]
I would like to obtain
Cos[f[x]] + Exp[g[y]]
In other words, I would like to use the same symbol (y) for two different
objects depending on whether y is in the lhs or rhs of the affectation. I
really need affectations rather than rules for y and z.
I could define different contexts for y. Is there a lighter solution ?
Many thanks
Geronimo
--
La possibilité que le oui et le non, le bien et le mal, soient également
indifférents à Dieu ne peut être concevable pour des têtes faites comme les
nôtres, car enfin Dieu doit bien servir à quelque chose.
[Jose Saramago]