Re: with 5.2 Mac
- To: mathgroup at smc.vnet.net
- Subject: [mg59783] Re: with 5.2 Mac
- From: sbjensen at midway.uchicago.edu (Steuard Jensen)
- Date: Sun, 21 Aug 2005 03:51:31 -0400 (EDT)
- Organization: The University of Chicago
- References: <de6lnl$cfa$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
[Reversed order of quotes to make the discussion easier to read:] > From: Steuard Jensen [mailto:sbjensen at midway.uchicago.edu] To: mathgroup at smc.vnet.net > > I've just upgraded from Mathematica 5.0 to 5.2 for the Mac... > > Specifically, I have used $Assumptions to define some variables as > > real. I apply Conjugate to various expressions, and then Simplify > > the results. In version 5.0, I _never_ saw a case in which > > Conjugate[] remained after this step. But in 5.2, I find that > > even simple forms like Conjugate[x + I y] often remain > > unsimplified. (Refine[x + I y] still seems to work, though.) Quoth "David Park" <djmp at earthlink.net> in article <de6lnl$cfa$1 at smc.vnet.net>: > Why don't you use... > > ComplexExpand[Conjugate[x + I y]] > x - I*y > > and you don't even have to set $Assumptions? That would be an excellent suggestion for this case, but my actual work isn't this simple. In particular, my actual expressions include a mix of complex-valued and real-valued terms. So either I would have to use $Assumptions as I've done here, or I would have to pass a long list of complex variables to ComplexExpand each time. (And it's even possible that my extra TransformationFunctions might replace combinations of complex variables with real ones, so I might have to use ComplexExpand more than once.) In any case, whether or not ComplexExpand is the _best_ way to do this, I think that Simplify still ought to work as expected! :) Nevertheless, thanks for your suggestion; even if it's not right for this problem, it could be useful for others. Steuard Jensen
- Follow-Ups:
- Re: Re: with 5.2 Mac
- From: Pratik Desai <pdesai1@umbc.edu>
- Re: Re: with 5.2 Mac