User Hajime_Saito

2 votes

1 answer

216 views

Is a finite morphism of Deligne-Mumford stacks proper?

asked Mar 9 at 19:24

5 votes

0 answers

142 views

Description of pull-back of coherent sheaves under a smooth morphism of Artin stacks

asked Feb 24 at 8:15

4 votes

1 answer

225 views

Question regarding the definition of linearization of line bundles

asked Nov 30, 2023 at 20:12

2 votes

0 answers

66 views

Orthogonal bundles with values in a line bundle vs. reductions of structure group to $O(n)$

asked Oct 20, 2023 at 13:33

2 votes

2 answers

199 views

Tensor functor between rigid tensor categories preserves $\text{Hom}$-objects

asked Sep 7, 2023 at 12:50

1 vote

0 answers

167 views

Question regarding Galois descent of sections of a vector bundle

asked Jun 24, 2022 at 14:07

5 votes

1 answer

406 views

A question regarding isomorphism in cohomology for moduli space of stable bundles over a compact Riemann surface

asked May 23, 2022 at 2:40

0 votes

0 answers

177 views

Question regarding étale sheaf under finite étale surjective morphism

asked Apr 3, 2022 at 6:07

4 votes

1 answer

176 views

Regarding a 'global' version of Chase-Harrison-Rosenberg exact sequence for rings

asked Oct 8, 2021 at 10:44

1 vote

0 answers

126 views

understanding higher direct images of $\mathbb{G}_m$ for a finite Galois map

asked Oct 4, 2021 at 14:02

1 vote

0 answers

231 views

Higher direct images of $\mathbb{G}_m$ under a projective bundle

asked Sep 7, 2021 at 19:16

2 votes

0 answers

68 views

complex eigenspace sub-bundle of holomorphic tangent bundle

asked Jan 18, 2021 at 21:49

2 votes

0 answers

52 views

Regarding projective manifolds with decomposable real tangent bundle

asked Jan 10, 2021 at 20:14

1 vote

1 answer

153 views

conditions on a morphism $f:X\rightarrow Y$ to ensure $X$ is reduced, given $Y$ is reduced?

asked Jul 19, 2020 at 8:55

2 votes

0 answers

436 views

Is the fiber product of two connected complex varieties over a connected base connected?

asked Jul 18, 2020 at 14:22

3 votes

0 answers

206 views

Whether a particular fiber product of varieties is integral

asked Jul 17, 2020 at 13:07

2 votes

0 answers

144 views

Determining if a morphism is a blowup along a given subvariety

asked May 23, 2020 at 8:50

1 vote

0 answers

118 views

Regarding singular points of a fiber bundle

asked May 1, 2020 at 18:20

1 vote

1 answer

185 views

Confusion regarding a definition of cycles

asked Jan 10, 2020 at 20:37

4 votes

0 answers

214 views

Is the determinant map $det:\mathcal{M}(r,d)\rightarrow Pic^d(X)$ on moduli space of semistable vector bundles a fibration?

asked Dec 9, 2019 at 18:28

1 vote

0 answers

115 views

3rd Cohomology of a fibration with Flag varieties as fibers

asked Nov 21, 2019 at 8:22

4 votes

1 answer

237 views

Question regarding intersection product in Chow group of $\mathbb{P}^n\times\mathbb{P}^m $

asked Jul 20, 2019 at 7:25

2 votes

1 answer

498 views

Question regarding Chow group of a blow-up

asked Jul 17, 2019 at 18:21

2 votes

0 answers

402 views

Regarding local complete intersection morphism

asked Jul 15, 2019 at 9:04

2 votes

0 answers

204 views

Computing Chow group of a variety which is almost a blow-up of another variety

asked Jul 8, 2019 at 8:16

2 votes

0 answers

139 views

Picard group of the moduli space of semistable rank 2 parabolic vector bundles over smooth complex projective curves with trivial determinant

asked Jun 17, 2019 at 16:49

0 votes

0 answers

213 views

Classifying $PGL(n,\mathbb{C})$-bundles over a compact Riemann surface

asked Apr 20, 2018 at 16:56

Stack Exchange Network

27 Questions

Is a finite morphism of Deligne-Mumford stacks proper?

Description of pull-back of coherent sheaves under a smooth morphism of Artin stacks

Question regarding the definition of linearization of line bundles

Orthogonal bundles with values in a line bundle vs. reductions of structure group to $O(n)$

Tensor functor between rigid tensor categories preserves $\text{Hom}$-objects

Question regarding Galois descent of sections of a vector bundle

A question regarding isomorphism in cohomology for moduli space of stable bundles over a compact Riemann surface

Question regarding étale sheaf under finite étale surjective morphism

Regarding a 'global' version of Chase-Harrison-Rosenberg exact sequence for rings

understanding higher direct images of $\mathbb{G}_m$ for a finite Galois map

Higher direct images of $\mathbb{G}_m$ under a projective bundle

complex eigenspace sub-bundle of holomorphic tangent bundle

Regarding projective manifolds with decomposable real tangent bundle

conditions on a morphism $f:X\rightarrow Y$ to ensure $X$ is reduced, given $Y$ is reduced?

Is the fiber product of two connected complex varieties over a connected base connected?

Whether a particular fiber product of varieties is integral

Determining if a morphism is a blowup along a given subvariety

Regarding singular points of a fiber bundle

Confusion regarding a definition of cycles

Is the determinant map $det:\mathcal{M}(r,d)\rightarrow Pic^d(X)$ on moduli space of semistable vector bundles a fibration?

3rd Cohomology of a fibration with Flag varieties as fibers

Question regarding intersection product in Chow group of $\mathbb{P}^n\times\mathbb{P}^m $

Question regarding Chow group of a blow-up

Regarding local complete intersection morphism

Computing Chow group of a variety which is almost a blow-up of another variety

Picard group of the moduli space of semistable rank 2 parabolic vector bundles over smooth complex projective curves with trivial determinant

Classifying $PGL(n,\mathbb{C})$-bundles over a compact Riemann surface