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15
348
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rational points on the quadrifolium $(x^2 + y^2)^3 = (x^2 - y^2)^2$

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#algebraic-geometry #analytic-geometry #intersection-theory #coherent-sheaves
39
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Polynomials that suffice $S = V(f,g)$ for $S$ finite set in $\mathbb{A}^2(\mathbb{C})$

Published on
#algebraic-geometry
110
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When $\langle F(x,y)y+u(x)(x-c), G(x,y)y+v(x)(x-c) \rangle$ is a maximal ideal of $\mathbb{C}[x,y]$?

Published on
#algebraic-geometry #ring-theory #commutative-algebra #ideals
739
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Find a projective change of coordinates that maps the (projective) line L to the (projective) line G

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#linear-algebra #abstract-algebra #algebraic-geometry #projective-geometry #projective-space
307
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Cubic surface with an A5 singularity

Published on
#algebraic-geometry
832
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Coordinate ring of a scheme in functorial algebraic geometry

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#algebraic-geometry #ring-theory #category-theory #schemes #algebraic-groups
122
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Calculating the dimension of a cotangent space of a curve

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#algebraic-geometry #commutative-algebra
175
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Relation between pullback and fiber product.

Published on
#algebraic-geometry #sheaf-theory
451
Views

Is this plane curve irreducible?

Published on
#algebraic-geometry #algebraic-curves #plane-curves
83
Views

How vanishing set irreducibility affects homogeneous polynomials

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#algebraic-geometry #polynomials
515
Views

What's the direct sum of infinite sheaves?

Published on
#algebraic-geometry #coherent-sheaves
949
Views

The surjective image of a proper scheme is proper

Published on
#algebraic-geometry #schemes
254
Views

When is a vector bundle morphism a vector bundle?

Published on
#algebraic-geometry #vector-bundles
455
Views

Degree and codimension of nondegenerate varieties

Published on
#algebraic-geometry #projective-geometry #projective-varieties
97
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Closed morphism of products of k-schemes with a field extension of k implies closed

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#algebraic-geometry #extension-field #schemes

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