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519
bio website facebook.com/aloiziomacedo
location Rio de Janeiro, Brazil
age 21
visits member for 2 years
seen 3 hours ago

Mathematics Student


Jan
24
comment Does $\sin(x+iy) = x+iy$ have infinitely many solutions?
Maybe Weierstrass Theorem can help.
Jan
22
awarded  Yearling
Jan
22
answered Why does it matter to approach zero from the left or right in 1/0?
Jan
2
comment why is the following not a metric on $R^2$?
The property is not that one. Sometimes, $0$ doesn't even make sense
Jan
2
answered why is the following not a metric on $R^2$?
Dec
9
awarded  Caucus
Dec
6
awarded  Nice Question
Dec
5
accepted How to visualize topological differences between $\mathbb{R}P^{2n}$ and $\mathbb{C}P^n$
Dec
3
answered F is the constant function
Dec
3
comment Good references on Riemannian Geometry
Thank you for helping! I checked out Petersen's. I didn't go thoroughly through the text, but I should say that I also like the "Definition - Theorem" format, which is not Petersen's apparently.
Dec
2
asked Good references on Riemannian Geometry
Nov
30
comment In war with exercise, any future for me?
Well, I think that (by making a BIG generalization), mathematicians can be divided in two groups (of course, there is a continuum between them, but that is not my point): Theory Builders, and Problem Solvers. But... any one of them you fit yourself in, you need the other. If you are a problem solver, you need theory to solve problems. If you are theory builder, you need exercises to check if you are understanding the theory well enough. I think there is no running from it. EDIT: And the two things are not really opposed, but rather interconnected.
Nov
29
comment What is the following property of inequality called?
Related: math.stackexchange.com/questions/300920/…
Nov
29
asked Why aren't those spaces diffeomorphic?
Nov
28
answered Is $\nabla$ a vector?
Nov
27
comment Why not differentiable manifolds that are not of class $C^1$
I briefly asked myself this question... but convinced myself that having something that has a "rate of change" which isn't continuous should be of low interest, when talking about differential geometry aspects. Maybe I was too flippant, though.
Nov
27
asked Exhaustion of a manifold by compacts
Nov
26
awarded  Guru
Nov
25
awarded  Good Answer
Nov
24
awarded  Mortarboard