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15
Math.TechQA.Club
2026-03-30 06:45:30
685
Views
Presheaves over sieves and posets
Published on
30 Mar 2026 - 6:45
#set-theory
#category-theory
#order-theory
#sheaf-theory
#topos-theory
2.3k
Views
What is the difference between $\ell$-adic cohomology and cohomology with coefficient in $Z_\ell$?
Published on
26 Mar 2026 - 17:53
#algebraic-geometry
#homology-cohomology
#sheaf-theory
#etale-cohomology
242
Views
A particular closed subscheme
Published on
27 Mar 2026 - 10:16
#algebraic-geometry
#schemes
#sheaf-theory
#affine-schemes
311
Views
English-Italian translations of "sieve" and "sink" in sheaf theory
Published on
25 Mar 2026 - 23:42
#reference-request
#category-theory
#sheaf-theory
#translation-request
807
Views
Sheafification of singular cochains
Published on
07 Jun 2013 - 19:59
#algebraic-geometry
#algebraic-topology
#sheaf-theory
189
Views
Sites for étale $G$-spaces
Published on
30 Mar 2026 - 6:44
#sheaf-theory
#topos-theory
436
Views
Two definitions of equivariant sheaves
Published on
25 Mar 2026 - 11:01
#lie-groups
#sheaf-theory
#group-actions
#simplicial-stuff
#groupoids
1.3k
Views
Why is the category of coherent sheaves not grothendieck?
Published on
20 Jun 2013 - 10:11
#algebraic-geometry
#category-theory
#schemes
#sheaf-theory
2.1k
Views
How exact is the functor "tensoring with a locally free sheaf"
Published on
30 Mar 2026 - 3:55
#algebraic-geometry
#sheaf-theory
#exact-sequence
258
Views
Does this right adjoint of a geometric morphism preserve directed colimits?
Published on
30 Mar 2026 - 6:46
#sheaf-theory
#topos-theory
884
Views
Stalk map on fiber products of schemes
Published on
27 Jun 2013 - 3:22
#algebraic-geometry
#schemes
#sheaf-theory
790
Views
What's definition $(\ker \varphi)_P$ the stalk of kernel presheaf
Published on
28 Jun 2013 - 10:10
#algebraic-geometry
#sheaf-theory
127
Views
Is epimorphism preserved under taking sections?
Published on
25 Mar 2026 - 10:51
#algebraic-geometry
#sheaf-theory
#epimorphisms
217
Views
serre duality and logarithmic differentials
Published on
02 Jul 2013 - 8:46
#algebraic-geometry
#sheaf-theory
312
Views
A canonical homomorphism of sheaves of modules
Published on
03 Jul 2013 - 6:52
#algebraic-geometry
#schemes
#sheaf-theory
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