3,391 reputation
1625
bio website
location
age
visits member for 2 years, 3 months
seen 5 hours ago

Graduate student trying to learn something.


8h
comment Finding an explicit mapping
Have you tried pre and post composing with bijective analytic maps of the unit disk to find a map fixing zero and then apply the schwarz lemma?
Aug
15
comment invertible matrices connected or not
No, he means the multiplicative group of real numbers. So $\mathbb{R}-0$
Aug
12
comment Give an example of a continuous function $f:R\rightarrow R$ which attains each of its values exactly three times.
math.stackexchange.com/questions/735842/…
Aug
12
comment Give an example of a continuous function $f:R\rightarrow R$ which attains each of its values exactly three times.
math.stackexchange.com/questions/730692/…
Aug
11
comment Is the product of uniformly distributed numbers, uniformly distributed too?
By "random" and "true random" do you mean uniformly random?
Aug
7
reviewed Approve suggested edit on Calculating the reminder when dividing complex numbers
Aug
5
comment Application of Lefschetz duality to prove Lefschetz hyperplane theorem
Also I am not sure why we introduced $U$ as it seems unnecessary.
Aug
5
comment Application of Lefschetz duality to prove Lefschetz hyperplane theorem
Thank you for your response. I gave you +1. However, I am concerned about letting $M=V$ because $V$ may have singularities. $V-P$ is certainly a complex manifold but $V$ may not be. Is there a way to fix this?
Jul
22
reviewed Approve suggested edit on What's wrong with my aproach to solving this equation with multiple logarithms?
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
@DanValenzuela I meant $f(M)$ is both open and closed in $N$, obviously.
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
@DanValenzuela Huh? Compact subsets of Hausdorff spaces are closed. I don't understand what you are complaining about.
Jul
22
accepted Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Jul
22
comment Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Ah, very nice solution.
Jul
22
revised Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
edited tags
Jul
22
asked Show a smooth map from a compact, connected, orientable surface to a cyllinder has singular derivative at 2 points.
Jul
18
accepted Is there a nonempty open bounded subset of plane whose boundary contains no 1 dimensional interval?
Jul
17
accepted Do differentiable functions preserve measure zero sets? Measurable sets?
Jul
16
awarded  Nice Question
Jul
16
asked Do differentiable functions preserve measure zero sets? Measurable sets?
Jul
10
awarded  Citizen Patrol