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Re: Re: Manipulating a complex modulus expression

• To: mathgroup at smc.vnet.net
• Subject: [mg82951] Re: [mg82911] Re: Manipulating a complex modulus expression
• From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
• Date: Sun, 4 Nov 2007 06:13:44 -0500 (EST)
• References: <fgens4$g36$1@smc.vnet.net> <200711030823.DAA18982@smc.vnet.net>

On 3 Nov 2007, at 17:23, carlos at Colorado.EDU wrote:

>
>>
>> Each new application of Simplify or FullSimplify is an adventure :-)
>>
>
> Indeed ...  I am curious: if one nests ComplexExpand inside Simplify
> (or FullSimplify) would the simplifier automatically know that all
> (non-designated) variables are real?
>
> If that is so, that would be a form of intraprocess inheritance
> typical of
> some languages.
>
>


It is easy to show that the answer is no. For example

FullSimplify[Im[ComplexExpand[Re[z]]]]

Im[z]

Andrzej Kozlowski

• References:
  • Re: Manipulating a complex modulus expression
    • From: carlos@Colorado.EDU