Mathematics
user avatar
user avatar
user avatar
Ramiro Hum-Sah
  • Member for 5 years, 9 months
  • Last seen more than a week ago
Profile Activity

18 Bookmarks

Score Activity Newest Views Added
10 answers
67 votes
14k views
76 bookmarks
Why is the tensor product important when we already have direct and semidirect products?
9 answers
65 votes
4k views
39 bookmarks
Why does $\cos(x) + \cos(y) - \cos(x + y) = 0$ look like an ellipse?
4 answers
52 votes
9k views
37 bookmarks
Intuitive reasoning why are quintics unsolvable
2 answers
44 votes
8k views
45 bookmarks
Is tautological bundle $\mathcal{O}(1)$ or $\mathcal{O}(-1)$?
4 answers
36 votes
9k views
25 bookmarks
Subgroup of $\mathbb{R}$ either dense or has a least positive element?
2 answers
31 votes
5k views
33 bookmarks
How should I think about very ample sheaves?
1 answer
24 votes
2k views
17 bookmarks
Topological vs. Algebraic $K$-Theory
2 answers
23 votes
7k views
21 bookmarks
Unit sphere in $\mathbb{R}^\infty$ is contractible?
3 answers
21 votes
808 views
9 bookmarks
What's the minimum number of $2$s needed to write a positive integer?
1 answer
17 votes
2k views
12 bookmarks
Proving that given any two points in a connected manifold, there exists a diffeomorphism taking one to the other
1 answer
8 votes
431 views
6 bookmarks
Construction of noncommutative torus
2 answers
6 votes
256 views
4 bookmarks
Can anyone explain a compact set intuitive way?
1 answer
5 votes
148 views
3 bookmarks
Connection of $\mathcal{O}(n)$ on a toric manifold
1 answer
4 votes
584 views
2 bookmarks
What is the Newton polyhedron of a toric variety?
3 answers
4 votes
5k views
8 bookmarks
Euler characteristic of an $n$-sphere is $1 + (-1)^n$.
1 answer
4 votes
258 views
4 bookmarks
Global sections of holomorphic line bundles $\mathcal{O}(n)$ over $\mathbb{P}^1(\mathbb{C})$
1 answer
2 votes
69 views
2 bookmarks
CY 3-folds are $T^2 \times \mathbb{R}$ fibrations over the base $\mathbb{R}^3$. What does it mean?
1 answer
1 vote
382 views
1 bookmarks
Prove or disprove: the maximum weight spanning trees form the bases of a matroid.

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.