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MathLearner123's latest activity
M
MathLearner123
posted the thread
A
Question about branch of logarithm
in
General Math
.
I have a question about Daniel Fischer's answer here Why the function ##g(w)## is well-defined on ##\mathbb{D} \setminus \{0\}##? I...
Yesterday, 2:24 PM
M
MathLearner123
posted the thread
I
Question about uniform convergence in a proof
in
Calculus
.
The below proposition is from David C. Ullrich's "Complex Made Simple" (pages 264-265) Proposition 14.5. Suppose ##D## is a bounded...
Apr 16, 2024
M
MathLearner123
reacted to
mathwonk's post
in the thread
I
Question about branch of logarithms
with
Like
.
And note that, as you realize, the proof as given is incorrect, as it assumes V is connected; so the argument, and the choice of a fixed...
Mar 16, 2024
M
MathLearner123
replied to the thread
I
Question about branch of logarithms
.
Oh so it will be a branch of logarithm in each connected, open part, and it will be something like a piecewise branch of logarithm on ##V##?
Mar 13, 2024
M
MathLearner123
replied to the thread
I
Question about branch of logarithms
.
@WWGD if derivative of ##g## is constant, I still need to have that ##V## is domain to show that. So I also need that ##V## is connected.
Mar 13, 2024
M
MathLearner123
replied to the thread
I
Question about branch of logarithms
.
I think that the statement is incorrect, and ##V## needs to be a domain (i.e. connected and open set), and this will make the statement...
Mar 10, 2024
M
MathLearner123
replied to the thread
I
Question about branch of logarithms
.
I don't know if they are equal if ##V## is not connected.
Mar 10, 2024
M
MathLearner123
posted the thread
I
Question about branch of logarithms
in
Topology and Analysis
.
I've read a proof from Complex Made Simple (David C. Ullrich) Proposition 4.3. Suppose that ##V## is an open subset of the plane. There...
Mar 10, 2024
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