Re: parameter restrictions
- To: mathgroup at smc.vnet.net
- Subject: [mg32471] Re: parameter restrictions
- From: atelesforos at hotmail.com (Orestis Vantzos)
- Date: Tue, 22 Jan 2002 03:19:54 -0500 (EST)
- References: <email@example.com>
- Sender: owner-wri-mathgroup at wolfram.com
Given that the Mathematica language does not use data types, there is not a definite way to establish the domain of a "variable"(*). I recommend using something like Simplify[expr, conditions] where expr is the expression you wish to analyse and conditions is a conjunction of inequalities. For instance: Simplify[Log[x]>0,x>1] returns True Orestis (*) I use quotes around the word "variables", since what you normally perceive as variables are actualy 'symbols'. This explains the absence of a 'domain' mechanism. Check the Big Book..