Another question on Assuming

*To*: mathgroup at smc.vnet.net*Subject*: [mg85866] Another question on Assuming*From*: "Kevin J. McCann" <Kevin.McCann at umbc.edu>*Date*: Tue, 26 Feb 2008 07:42:34 -0500 (EST)*Organization*: University System of Maryland

The first example in the Mathematica Help on Assuming is (in part) Assuming[a > 0, Refine[Sqrt[a^2]]] which results in the answer a, as it should; however if I type instead Assuming[a > 0, Sqrt[a^2]] I get back Sqrt[a^2]], but I should get a, since there is no other correct answer, because the assumption that a > 0 implies that it a is a positive real. Bug? Kevin -- Kevin J. McCann Research Associate Professor JCET/Physics Physics Building University of Maryland, Baltimore County 1000 Hilltop Circle Baltimore, MD 21250

**Follow-Ups**:**Re: Another question on Assuming***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>