Mathematics
juan diego rojas's user avatar
juan diego rojas's user avatar
juan diego rojas's user avatar
juan diego rojas
  • Member for 4 years, 2 months
  • Last seen this week
  • Bogota, Colombia
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masters' student at Los Andes.

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All Questions Answers
Score Newest
answer
4
Why is it sufficient to show that $f:X\rightarrow Y$ is open iff every image of an openset contains some nonempty openset
Apr 22, 2020
answer
3
How to show every proper subgroup is cyclic?
Oct 21, 2019
answer
3
Constructing a simplicial map from a diagram
Apr 18, 2020
answer
2
Importance of the structure sheaf of the spectrum
Nov 3, 2019
answer
2
Isomorphism from {1-forms} to $\frac{\mathfrak{m}}{\mathfrak{m}^2}$ where $\mathfrak{m}$ is the maximal ideal in the local ring at a point.
Mar 12, 2020
answer
2
Graded tensor product of rings in Künneth formula
Apr 21, 2020
answer
2
if $H_1(X)$ has torsion in finite simplicial complex complex $X$ then a particular embedding into $R^3$ does not exist
Apr 22, 2020
answer
2
Technical lemma to construct long exact sequence in homotopy
Jul 14, 2021
answer
1
Reference Request: Cardinal Division
Oct 15, 2019
answer
1
local trivialisation of $G$-torsor
Oct 21, 2019

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