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15
Math.TechQA.Club
2026-05-05 06:00:35
642
Views
Is the cohomology of a stalk the same as the stalk of the cohomology sheaf?
Published on
05 May 2026 - 6:00
#homology-cohomology
#sheaf-theory
#sheaf-cohomology
80
Views
Why do the finitely generated subsheaves of a sheaf form a directed system?
Published on
29 Apr 2026 - 12:28
#category-theory
#homological-algebra
#sheaf-theory
#abelian-categories
339
Views
Semi-stable locally free sheaves on a curve of constant slope form an abelian category
Published on
29 Apr 2026 - 12:50
#abstract-algebra
#algebraic-geometry
#sheaf-theory
#vector-bundles
#coherent-sheaves
9.7k
Views
What is an intuitive Geometrical explanation of a "sheaf?"
Published on
10 May 2026 - 9:00
#algebraic-geometry
#algebraic-topology
#manifolds
#sheaf-theory
#higher-category-theory
145
Views
Poincare-Euler characteristic and sum of two divisors
Published on
07 May 2026 - 18:58
#algebraic-geometry
#surfaces
#sheaf-theory
#schemes
#divisors-algebraic-geometry
370
Views
Why is every sheaf of $\mathcal{O}_{X}$-modules not generated by global sections?
Published on
10 May 2026 - 8:36
#category-theory
#sheaf-theory
#quasicoherent-sheaves
340
Views
Does the inverse image sheaf functor has a left adjoint?
Published on
04 May 2026 - 4:08
#category-theory
#sheaf-theory
#adjoint-functors
655
Views
Proving constant sheaf is truly a sheaf
Published on
29 Apr 2026 - 12:50
#proof-verification
#algebraic-geometry
#proof-writing
#sheaf-theory
65
Views
Does the scheme-theoretic definition of a manifold include Hausdorffness and second-countability?
Published on
29 Apr 2026 - 12:50
#differential-geometry
#sheaf-theory
#schemes
54
Views
Conditions on $\mathcal{F}$ such that $\chi(\mathcal{F}) = 0$ for a coherent sheaf on a curve over $k$.
Published on
07 May 2026 - 9:56
#algebraic-geometry
#sheaf-theory
#sheaf-cohomology
#projective-schemes
829
Views
Vector field on a smooth variety
Published on
05 May 2026 - 3:30
#algebraic-geometry
#sheaf-theory
#tangent-bundle
82
Views
Can 2 different coverages *on the same category* yield the same sheaf topos?
Published on
29 Apr 2026 - 12:18
#sheaf-theory
#topos-theory
238
Views
Purpose of the anchor map, Lie algebroid
Published on
29 Apr 2026 - 12:50
#algebraic-geometry
#definition
#sheaf-theory
#lie-algebroids
426
Views
A Presheaf satisfying a sort of Unique Gluing axiom is a Sheaf ?
Published on
29 Apr 2026 - 12:50
#algebraic-geometry
#commutative-algebra
#category-theory
#sheaf-theory
101
Views
Meaning of $f$ being a function on $\text{Spec}(A)$
Published on
24 Apr 2026 - 21:44
#sheaf-theory
#schemes
#affine-schemes
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