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Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: Complex analysis question
Replies: 10   Last Post: Jan 2, 2013 2:47 PM

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ksoileau

Posts: 74
From: Houston, TX
Registered: 3/9/08
Re: Complex analysis question
Posted: Jan 2, 2013 9:40 AM
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On Wednesday, January 2, 2013 8:06:17 AM UTC-6, PotatoSauce wrote:
> You mean, something easier than CR equations?
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> On Wednesday, January 2, 2013 7:19:02 AM UTC-5, ksoileau wrote:
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> > Does anyone know of an easy proof of the following:
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> > If f is analytic inside and on a contour C, and f has constant modulus inside and on C, then f is constant inside and on C.
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> > Thanks for any replies!
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> > Kerry M. Soileau

It's not clear to me how to use the CR equations, given the nature of the hypothesis. Please demonstrate.

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