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New posts in algebraic-geometry
Showing an ideal is prime in polynomial ring
abstract-algebra
algebraic-geometry
commutative-algebra
ideals
Extension by zero not Quasi-coherent.
algebraic-geometry
sheaf-theory
Image of the Veronese Embedding
algebraic-geometry
$X \cong \operatorname{Proj} \oplus_n H^0(X, O(n)) $
algebraic-geometry
Proving that $\operatorname{codim}(X,Y)=\dim(\mathcal{O}_{X,\eta})$
algebraic-geometry
Fiber product of sheaves
algebraic-geometry
category-theory
sheaf-theory
Harris' definition of quotient of a variety, what does he mean with "doing something stupid"
abstract-algebra
algebraic-geometry
Why the Picard group of a K3 surface is torsion-free
algebraic-geometry
complex-geometry
k3-surfaces
negative multiple of ample line bundle has no global section
algebraic-geometry
What are the epimorphisms and monomorphisms in the category of affine varieties?
algebraic-geometry
category-theory
Which isomorphism of coordinate rings corresponds to isomorphisms of affine varieties?
abstract-algebra
algebraic-geometry
reference-request
ring-theory
commutative-algebra
Is $x^5+x+5=y^2$ solvable over the integers?
number-theory
elementary-number-theory
algebraic-geometry
diophantine-equations
algebraic-curves
Prime ideals of $k[t^2,t^3]$
algebraic-geometry
ideals
maximal-and-prime-ideals
Torsion-free sheaf on $\Bbb P^2$
algebraic-geometry
sheaf-cohomology
coherent-sheaves
Separated schemes and unicity of extension
algebraic-geometry
schemes
rational functions on projective n space
algebraic-geometry
commutative-algebra
projective-space
Chern classes of tautological bundle over the Grassmannian G(2,4)
algebraic-geometry
schubert-calculus
If $X$ is separated over $\operatorname{Spec} \Bbb Z$, is it separated over any other scheme?
algebraic-geometry
schemes
Affine space over non algebraically closed field
algebraic-geometry
Why do we have to deal with constructible sets?
algebraic-geometry
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