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user520682
  • Member for 6 years, 11 months
  • Last seen more than 1 year ago
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question
5
Any embedding $\mathbb{R} P^n\hookrightarrow \mathbb{R} P^{\infty}$ induces a surjection of the singular cohomology rings.
Aug 10, 2019
question
5
Refinement of two stratifications of an algebraic variety
May 17, 2020
question
3
Does the cup product commute with Mayer-Vietoris connecting homomorphism?
Jul 10, 2019
question
3
Well-definedness of a map on an elliptic curve
Nov 24, 2019
question
3
The category of complexes modulo homotopy is triangulated
Apr 1, 2020
question
3
Derived Tensor Product of Bimodules
Jul 12, 2021
question
2
Derived functors via derived categories
Apr 22, 2020
question
2
Example of not locally finitely generated sheaf
Nov 10, 2020
question
2
Superfluous assumptions on Vietoris-Begle mapping theorem in Iversen's Cohomology of Sheaves
Dec 7, 2020
answer
2
Question about Hartshorne's assertion that $\mathrm{Proj\,}S\big\vert_{D_+(f)}\cong\mathrm{Spec\,} S_{(f)}$
Jul 13, 2021