List questions from fibre-product

Published on 18 Jun 2018 - 17:19

442

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The existence of fibre product of schemes

Published on 11 Nov 2018 - 12:41

320

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Hartshorne II.3.22c following the hint

Published on 01 Feb 2019 - 23:19

302

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EGA I (Springer), Proposition 0.4.5.4.

Published on 26 Mar 2019 - 14:16

1.8k

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How to understand fibres of morphisms of schemes.

Published on 31 Mar 2019 - 14:40

358

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Question about irreducible components of the fiber product $\operatorname{Spec}(k[t]) \times_{\text{Spec}(k[t^2])} \operatorname{Spec}(k[t])$

Published on 11 Jun 2019 - 23:11

140

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Pullback of localisations of commutative ring

Published on 13 Nov 2019 - 6:26

720

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An example when the direct image of a locally free sheaf is not locally free

Published on 17 Mar 2020 - 14:39

766

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The Image of Diagonal Morphism $\Delta(X)$

Published on 31 Mar 2020 - 5:29

213

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If $S\to T$ is a closed immersion, then $X\times_S Y\simeq X\times_T Y$.

Published on 09 May 2020 - 0:51

443

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Fiber product of separated schemes is again separated.

Published on 03 Jun 2020 - 14:50

43

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Uniquness of the fiber product

Published on 05 Jul 2020 - 13:32

62

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Geometric fibres of a spec of a field

Published on 16 Jul 2020 - 8:18

283

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fibre of a scheme of finite type over a field being quasi-compact

Published on 24 Jul 2020 - 16:48

60

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Strange notation of fibre product in an article of Cattaneo, Felder and Tomassini.

Published on 29 Jul 2020 - 10:23

List Question

A question on the fibered product of schemes

The existence of fibre product of schemes

Hartshorne II.3.22c following the hint

EGA I (Springer), Proposition 0.4.5.4.

How to understand fibres of morphisms of schemes.

Question about irreducible components of the fiber product $\operatorname{Spec}(k[t]) \times_{\text{Spec}(k[t^2])} \operatorname{Spec}(k[t])$

Pullback of localisations of commutative ring

An example when the direct image of a locally free sheaf is not locally free

The Image of Diagonal Morphism $\Delta(X)$

If $S\to T$ is a closed immersion, then $X\times_S Y\simeq X\times_T Y$.

Fiber product of separated schemes is again separated.

Uniquness of the fiber product

Geometric fibres of a spec of a field

fibre of a scheme of finite type over a field being quasi-compact

Strange notation of fibre product in an article of Cattaneo, Felder and Tomassini.

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