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non-abelian Galois cohomology

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#algebraic-geometry #homological-algebra #homology-cohomology
147
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Invariants of $O(2) \times O(2)$ under simultaneous conjugation

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#algebraic-geometry #representation-theory #lie-groups #algebraic-groups #invariant-theory
286
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Subjects or recent progress in Tropical geometry or similar suitable for undergraduate investigation

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#algebraic-geometry #reference-request #tropical-geometry
53
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An algebraic curve $C$ as a cover of $\mathbb{P}^1$ over $\bar{\mathbb{Q}}$

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#abstract-algebra #algebraic-geometry #ramification
425
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Very ample divisors and the Riemann-Roch theorem

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#algebraic-geometry
492
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singular point of a complete intersection surface

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#algebraic-geometry
345
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27 lines on Fermat cubic

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#algebraic-geometry
2.8k
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Why can we use flabby sheaves to define cohomology?

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#algebraic-geometry #sheaf-theory #abelian-categories #sheaf-cohomology
242
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Tensor product of local Artinian rings

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#algebraic-geometry #commutative-algebra
2.3k
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Euler characteristic, genus and cohomology: a deep connection?

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#algebraic-geometry #differential-geometry #algebraic-topology #homology-cohomology #big-picture
33
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Identifying lines in $\mathbb P^2$

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#algebraic-geometry
404
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What does it mean to restrict a function germ to a set germ?

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#algebraic-geometry #germs
148
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Alternative proof of Noether Normalization Lemma

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#algebraic-geometry #schemes
194
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$J \subset I(V(J))$ where $J$ is an ideal.

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#algebraic-geometry #commutative-algebra
168
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Computing the dualizing sheaf of an exceptional divisor

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#algebraic-geometry

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