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Daniel Apsley

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Top Questions

Finding an example of a degree 5 rational curve in $\mathbb{P}^3$ which is not in a quadric.

algebraic-geometry algebraic-curves asked Mar 8, 2023 at 21:03

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Is this property of flat morphisms accurate?

algebraic-geometry commutative-algebra asked Sep 19, 2023 at 16:56

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Find the kernel of $\mathbb{Z}[x] \to \mathbb{Q}$ given by $f \mapsto f(1/3)$.

abstract-algebra solution-verification asked Jul 5, 2022 at 17:28

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Let $A$ be an integrally closed noetherian domain, and $(R, \mathfrak{m})$ local with $A \subseteq R \subseteq K(A)$. Is $R$ a localization of $A$?

commutative-algebra localization local-rings asked Aug 10, 2021 at 22:06

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What is the conormal sheaf?

algebraic-geometry commutative-algebra sheaf-theory asked Dec 17, 2021 at 0:19

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Is the kernel of a surjective morphism $\mathscr{F} \to \mathscr{G}$ of locally free sheaves locally free?

algebraic-geometry commutative-algebra solution-verification asked Jan 1, 2022 at 23:29

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Volume of the graded linear series $\Gamma_\bullet(\mathbf{P}^n, \mathcal{O}(1) \otimes \mathfrak{m}^c)$. Is it $1 - c$ or $1 - c^n$?

algebraic-geometry commutative-algebra asked Sep 7, 2023 at 21:23

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Top Answers

How to calculate $\lim_{n \to \infty} \int_{[n,n+1)} f(x) dx$ if $f\in L^1(\mathbb{R})$

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Hartshorne's definition of very ample sheaves

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Proof that set is a submanifold

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Morphisms from an open set of an affine variety to a projective space

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some questions about open affine cover

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Is there an algebraic condition on a map of rings which classifies whether the induced map on spectrum is closed?

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