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15
Math.TechQA.Club
2026-03-25 09:25:24
408
Views
Twisted sheaves in Hartshorne
Published on
25 Mar 2026 - 9:25
#sheaf-theory
#schemes
#coherent-sheaves
#projective-schemes
79
Views
Extendability criteria for Morphisms of Schemes
Published on
23 Apr 2020 - 18:50
#algebraic-geometry
#commutative-algebra
#schemes
1.2k
Views
Reduced scheme $X_{red}$ out of a scheme $X$
Published on
30 Mar 2026 - 1:33
#algebraic-geometry
#sheaf-theory
#schemes
225
Views
The affine scheme $\text{Spec}(\mathbb{C}\times\mathbb{C})$ is a projective $\mathbb{C}$-scheme.
Published on
24 Apr 2020 - 20:09
#algebraic-geometry
#schemes
169
Views
Deligne generic base change theorem $l$-adic sheaves
Published on
26 Mar 2026 - 4:50
#algebraic-geometry
#schemes
#etale-cohomology
193
Views
The ideal sheaf of a closed subscheme of the projective $\mathbb{C}$-scheme.
Published on
25 Apr 2020 - 15:37
#algebraic-geometry
#schemes
100
Views
Direct image with the absolute Frobenius
Published on
30 Mar 2026 - 1:28
#algebraic-geometry
#sheaf-theory
#schemes
145
Views
First (historically) solved problems using schemes theory
Published on
26 Apr 2020 - 23:26
#algebraic-geometry
#schemes
212
Views
Pushforward of tangent bundle. Can it be $0$?
Published on
29 Mar 2026 - 16:47
#algebraic-geometry
#sheaf-theory
#vector-bundles
#schemes
99
Views
Question about the function field of a noetherian, integral, locally factorial scheme
Published on
29 Apr 2020 - 7:58
#algebraic-geometry
#commutative-algebra
#schemes
48
Views
Affine open for arbitrarily chosen 2 points on a scheme
Published on
25 Mar 2026 - 17:43
#general-topology
#number-theory
#algebraic-geometry
#schemes
#group-schemes
354
Views
Clarification about Riemann-Roch for non-reduced curves
Published on
25 Mar 2026 - 14:37
#algebraic-geometry
#schemes
#divisors-algebraic-geometry
54
Views
How much information about $R$ is encoded in its local rings OR in its tangent spaces if I know the topology of $\operatorname{Spec}(R)$?
Published on
25 Mar 2026 - 10:58
#algebraic-geometry
#schemes
#local-rings
#tangent-spaces
195
Views
Proof of Chow's Lemma, where is proper necessary?
Published on
26 Mar 2026 - 9:42
#algebraic-geometry
#schemes
#noetherian
117
Views
Isomorphism between schemes
Published on
08 May 2020 - 13:02
#algebraic-geometry
#schemes
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