Let N C C be a domain (that is, a connected open subset), and let f: N → C be holomorphic. Prove that if f (z) = iv(x, y) for every z E (namely, if the real part of the function is u = 0) then there is a constant vo E R such that f(z) = ivo in N.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.2: Mappings
Problem 23E: Let a and b be constant integers with a0, and let the mapping f:ZZ be defined by f(x)=ax+b. Prove...
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Let N C C be a domain (that is, a connected open subset), and let f: N → C be holomorphic.
Prove that if f (z) = iv(x, y) for every z E (namely, if the real part of the function is
u = 0) then there is a constant vo E R such that f(z) = ivo in N.
Transcribed Image Text:Let N C C be a domain (that is, a connected open subset), and let f: N → C be holomorphic. Prove that if f (z) = iv(x, y) for every z E (namely, if the real part of the function is u = 0) then there is a constant vo E R such that f(z) = ivo in N.
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