List questions from blowup

Published on 16 Mar 2026 - 22:33

334

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Images of derived categories of $X, Z$ in derived category of blow up

Published on 24 Mar 2026 - 15:48

160

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Affine cover of blow-up along ideal

Published on 17 Mar 2026 - 8:17

327

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Ideal sheaf of intersection

Published on 14 Mar 2026 - 17:22

71

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How can I get claim 1 or claim 2?

Published on 17 Mar 2026 - 5:20

835

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Blow-up of the affine plane in the origin, using schemes.

Published on 17 Mar 2026 - 12:58

110

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$K_0$ ring of del-pezzo surface

Published on 17 Mar 2026 - 2:33

104

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Example of blow-up of curve along subvariety with finite fields

Published on 17 Mar 2026 - 21:17

531

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Is it possible to blow-up in codimension one?

Published on 17 Mar 2026 - 7:47

87

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Expression for $\mathcal{O}_{\mathbb{P}(N_{Y/X})}(-k)$ in blowup

Published on 17 Mar 2026 - 23:18

427

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Blow up of $\mathbb{P}^2$ in a point and direct image sheaves

Published on 14 Mar 2026 - 9:22

1.2k

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Restriction of the exceptional divisor to itself as a line bundle

Published on 24 Mar 2026 - 23:45

1.2k

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Euler Characteristic of a blowing up

Published on 25 Mar 2026 - 1:16

329

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Blow up of one point is isomorphic to $\mathbb{P}(\mathcal{O} \oplus \mathcal{O}(1))$

Published on 14 Mar 2026 - 18:33

1k

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How to show $CP^1\times CP^1$ and $CP^2$ blow up one point are not diffeomorphic?

Published on 25 Mar 2026 - 1:20

List Question

Cohomology of blow-up

Images of derived categories of $X, Z$ in derived category of blow up

Affine cover of blow-up along ideal

Ideal sheaf of intersection

How can I get claim 1 or claim 2?

Blow-up of the affine plane in the origin, using schemes.

$K_0$ ring of del-pezzo surface

Example of blow-up of curve along subvariety with finite fields

Is it possible to blow-up in codimension one?

Expression for $\mathcal{O}_{\mathbb{P}(N_{Y/X})}(-k)$ in blowup

Blow up of $\mathbb{P}^2$ in a point and direct image sheaves

Restriction of the exceptional divisor to itself as a line bundle

Euler Characteristic of a blowing up

Blow up of one point is isomorphic to $\mathbb{P}(\mathcal{O} \oplus \mathcal{O}(1))$

How to show $CP^1\times CP^1$ and $CP^2$ blow up one point are not diffeomorphic?

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