Newbetuts
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New posts in algebraic-geometry
Trying to understand the use of the "word" pullback/pushforward.
algebraic-geometry
differential-geometry
category-theory
Why are locally closed subschemes not open subschemes of closed subschemes?
algebraic-geometry
schemes
Structure ring of constant group scheme.
number-theory
algebraic-geometry
schemes
group-schemes
picard-scheme
Isomorphism of schemes over a DVR is determined by the isomorphism over its generic fiber?
algebraic-geometry
arithmetic-geometry
$\operatorname{Spec}\mathbb{K}[x,y,z]/\langle x^2-yz \rangle$ is normal and singular
algebraic-geometry
commutative-algebra
schemes
How to determine the group structure of $E(\mathbb{R})$ for an elliptic curve $E/\mathbb{R}$
algebraic-geometry
elliptic-curves
Zariski Tangent Space and $k[\varepsilon]/\varepsilon^2$
algebraic-geometry
schemes
Vector Bundle Locally Free Sheaf
algebraic-geometry
sheaf-theory
vector-bundles
Why are skew-symmetric matrices of interest?
matrices
algebraic-geometry
reference-request
soft-question
skew-symmetric-matrices
Why is a smooth connected scheme irreducible?
algebraic-geometry
Variety vs. Manifold
algebraic-geometry
differential-geometry
soft-question
Finding generators of toric ideals
abstract-algebra
geometry
algebraic-geometry
polyhedra
toric-geometry
Is skyscraper sheaf quasi-coherent?
algebraic-geometry
For which $n$ is $\mathbb{A}^n\setminus \{0\}$ an affine variety?
algebraic-geometry
affine-varieties
What is an example of two k-algebras that are isomorphic as rings, but not as k-algebras?
abstract-algebra
algebraic-geometry
ring-theory
commutative-algebra
Projective space is not affine
algebraic-geometry
Pushout results in a nodal curve
algebraic-geometry
Why are affine varieties except points not compact in the standard topology on $C^n$ ?
algebraic-geometry
Twisted sheaf $\mathcal{F}(n)$.
algebraic-geometry
Why is the line at infinity one-dimensional?
algebraic-geometry
proof-verification
projective-geometry
projective-space
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