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Irreducible components of the closure of a locally closed subset

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#general-topology #algebraic-geometry #algebraic-topology #schemes #projective-schemes
319
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$\mathbb{P}^1$ isomorphic to conic in $\operatorname{Proj}(K[x,y,z])$ context

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#abstract-algebra #algebraic-geometry #schemes #projective-geometry #projective-schemes
177
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Smoothness is a geometric property

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#algebraic-geometry #field-theory #schemes #projective-geometry #projective-schemes
287
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Question on Smooth Completion of curves

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#algebraic-geometry #schemes #algebraic-curves #projective-schemes
276
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A more concrete description of the functor of points of projective space.

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#algebraic-geometry #projective-space #projective-schemes
67
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Projectivity of a morphism between schemes implies the existence of an exact sequence

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#algebraic-geometry #projective-schemes
410
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"Stacks project" - construction of Segre embedding - a clarification

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#algebraic-geometry #projective-schemes
94
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Projection as limit of flat family (Hartshorne III.9.8.3)

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#algebraic-geometry #schemes #projective-schemes
358
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Injection into double dual is isomorphism away from codimension $\geq 2$ subscheme

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#algebraic-geometry #schemes #projective-schemes
562
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Ideal sheaf of a point in $\mathbb{P}^1$

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#algebraic-geometry #schemes #coherent-sheaves #projective-schemes
909
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Exercise 1.24 from Joe Harris' Algebraic Geometry: First Course

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#algebraic-geometry #curves #schemes #algebraic-curves #projective-schemes
84
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Hyperplane $\Phi_X$ in Chow construction (Algebraic Geometry by Joe Harris)

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#algebraic-geometry #projective-schemes #birational-geometry #moduli-space
46
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Are all embeddings of varieties essentially the same?

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#algebraic-geometry #polynomials #schemes #projective-schemes
281
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When does a fibration has the geometrically integral generic fiber?

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#algebraic-geometry #schemes #projective-geometry #projective-schemes
167
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Show that different notions of projectivity are distinct

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#algebraic-geometry #projective-geometry #coherent-sheaves #projective-schemes

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