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15
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Residual separability of birational morphisms

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#abstract-algebra #algebraic-geometry #arithmetic-geometry #birational-geometry
51
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Surjection from a connected separated scheme

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#algebraic-geometry #schemes
55
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A formula for the high plurigenera of a fibered surface

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#algebraic-geometry #surfaces
123
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Are varieties determined by morphisms from curves?

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#algebraic-geometry #category-theory #homological-algebra #schemes
298
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Regular local ring that is not isomorphic to $k[T_1, \dots, T_n]$

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#algebraic-geometry #commutative-algebra
190
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About $16$ lines on the del Pezzo surface of degree $4$.

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#algebraic-geometry
399
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Different definitions of Cartier divisor and when they agree

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#algebraic-geometry #sheaf-theory #schemes #divisors-algebraic-geometry
191
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Basic algebraic geometry questions

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#algebraic-geometry #commutative-algebra
487
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Hartshorne Lemma III.7.4 Proof

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#algebraic-geometry #proof-explanation #schemes
89
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Which field does $\overline{\mathbb{C}(t)}$ refer to?

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#abstract-algebra #algebraic-geometry #field-theory #notation
108
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Existence of constant $c$ such that polynomial $P(x_1,\ldots,x_d)+c$ factors

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#algebraic-geometry #polynomials #algorithms
298
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Higher Direct Images of Birational Morphisms between Regular Schemes

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#algebraic-geometry #schemes #blowup
431
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Inverse/Direct Images and Sheafification

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#algebraic-geometry #category-theory #sheaf-theory
120
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Equivalence of categories of coherent sheaves

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#algebraic-geometry #k-theory #algebraic-k-theory
200
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Excellent Rings Geometric Intuition

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#algebraic-geometry #ring-theory #commutative-algebra

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