List questions from algebraic-geometry

Published on 09 Aug 2018 - 17:37

285

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intersection of all neighborhoods of a point in zariski topology.

Published on 09 Aug 2018 - 17:55

254

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Fiber product of irreducible curves

Published on 27 Mar 2026 - 10:31

403

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What is a surjective homomorphism of algebraic groups?

Published on 25 Mar 2026 - 9:26

2.1k

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Example of nef and big, not ample

Published on 27 Mar 2026 - 4:35

773

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Polynomial vanishing on an open subset of an irreducible variety. Follow up question.

Published on 03 Apr 2026 - 23:49

654

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Definition of blowing-up along a complex submanifold (Huybrechts)

Published on 25 Mar 2026 - 1:17

256

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Homology Groups of a CW-complex

Published on 30 Mar 2026 - 7:02

322

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Why are the polynomial rings $k[x]$ and $k[x,y]/\langle y-x^2 \rangle$ isomorphic?

Published on 11 Aug 2018 - 15:20

35

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Compact submanifold of the projective space and semismple algebraic group action

Published on 25 Mar 2026 - 9:32

78

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For which $f \in \mathbb{C}[x,y]$, $fy-\lambda$ is irreducible in $\mathbb{C}[x,y]$ for infinitely many $\mathbb{C} \ni \lambda$'s

Published on 25 Mar 2026 - 19:03

146

Views

Singular Schubert Variety in $Fl_4(\mathbb C)$

Published on 04 Apr 2026 - 7:23

70

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For which $f \in \mathbb{C}[x,y]$, $\mathbb{C}(x)[y]/(fy-\lambda)$ is isomorphic to $\mathbb{C}(t)$?

Published on 25 Mar 2026 - 17:52

73

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Affine algebraic varieties associated with arbitrary sets

Published on 25 Mar 2026 - 2:59

46

Views

Are $u_1,u_2,\cdots,u_n$ independent in $M$?

Published on 31 Mar 2026 - 3:30

List Question

Merge smoothly two discontinuous segments over a given gap

intersection of all neighborhoods of a point in zariski topology.

Fiber product of irreducible curves

What is a surjective homomorphism of algebraic groups?

Example of nef and big, not ample

Polynomial vanishing on an open subset of an irreducible variety. Follow up question.

Definition of blowing-up along a complex submanifold (Huybrechts)

Homology Groups of a CW-complex

Why are the polynomial rings $k[x]$ and $k[x,y]/\langle y-x^2 \rangle$ isomorphic?

Compact submanifold of the projective space and semismple algebraic group action

For which $f \in \mathbb{C}[x,y]$, $fy-\lambda$ is irreducible in $\mathbb{C}[x,y]$ for infinitely many $\mathbb{C} \ni \lambda$'s

Singular Schubert Variety in $Fl_4(\mathbb C)$

For which $f \in \mathbb{C}[x,y]$, $\mathbb{C}(x)[y]/(fy-\lambda)$ is isomorphic to $\mathbb{C}(t)$?

Affine algebraic varieties associated with arbitrary sets

Are $u_1,u_2,\cdots,u_n$ independent in $M$?

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