Question

How to define canonical bundle of a complex orbifold?

score 128 · Answer 1 · 2026-04-11 00:56:45

128

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How to define canonical bundle of a complex orbifold?

Published on 11 Apr 2026 - 0:56

score 274 · Answer 2 · 2026-04-17 08:01:24

274

Views

Genus of compact Riemann surface $\{[x_0,x_1,x_2]\in\Bbb P^2\mid x_2^2x_0=\prod_{i=1}^3(x_1-\lambda_ix_0),\lambda_i\in\Bbb C\}$

Published on 17 Apr 2026 - 8:01

score 127 · Answer 3 · 2026-04-16 01:33:11

127

Views

For $X$ projective variety, $ X-Z(f) $ is isomorphic to an affine variety

Published on 16 Apr 2026 - 1:33

score 275 · Answer 4 · 2026-04-16 08:10:49

275

Views

Show that the polynomial $Y^2+X^2(X-1)^2 \in \Bbb R[X,Y]$ is irreducible.

Published on 16 Apr 2026 - 8:10

score 187 · Answer 5 · 2026-04-16 05:32:10

187

Views

$\text{Tor}$ and $IJ=I\cap J$: Eisenbud exercice A3.17

Published on 16 Apr 2026 - 5:32

score 362 · Answer 6 · 2026-04-13 22:33:29

362

Views

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

Published on 13 Apr 2026 - 22:33

score 97 · Answer 7 · 2026-04-13 15:05:00

97

Views

Is the unit circle always an infinite set if the field is infinite?

Published on 13 Apr 2026 - 15:05

score 159 · Answer 8 · 2026-04-11 05:02:22

159

Views

Polynomial ideal of union of algebraic sets

Published on 11 Apr 2026 - 5:02

score 91 · Answer 9 · 2026-04-19 08:18:17

91

Views

Ring of invariants of unimodular matrices acting on real square matrices

Published on 19 Apr 2026 - 8:18

score 88 · Answer 10 · 2026-04-08 16:13:06

88

Views

Module over restriction of scalars

Published on 08 Apr 2026 - 16:13

score 71 · Answer 11 · 2026-04-12 04:54:39

71

Views

Finiteness and Degree of a polynomial mapping

Published on 12 Apr 2026 - 4:54

score 50 · Answer 12 · 2026-03-25 02:58:59

50

Views

Relation between Zero dimensional subschemes and saturated ideals

Published on 25 Mar 2026 - 2:58

score 52 · Answer 13 · 2026-04-11 04:08:36

52

Views

Projectivity of the Hilbert scheme

Published on 11 Apr 2026 - 4:08

score 304 · Answer 14 · 2026-04-12 07:26:33

304

Views

Motivation for direct limit and filtered directed limit?

Published on 12 Apr 2026 - 7:26

score 83 · Answer 15 · 2026-04-13 12:55:34

83

Views

The affine algebra $\Gamma(V)$ is finite-dimensional iff $V$ is finite

Published on 13 Apr 2026 - 12:55

List Question

How to define canonical bundle of a complex orbifold?

Genus of compact Riemann surface $\{[x_0,x_1,x_2]\in\Bbb P^2\mid x_2^2x_0=\prod_{i=1}^3(x_1-\lambda_ix_0),\lambda_i\in\Bbb C\}$

For $X$ projective variety, $ X-Z(f) $ is isomorphic to an affine variety

Show that the polynomial $Y^2+X^2(X-1)^2 \in \Bbb R[X,Y]$ is irreducible.

$\text{Tor}$ and $IJ=I\cap J$: Eisenbud exercice A3.17

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

Is the unit circle always an infinite set if the field is infinite?

Polynomial ideal of union of algebraic sets

Ring of invariants of unimodular matrices acting on real square matrices

Module over restriction of scalars

Finiteness and Degree of a polynomial mapping

Relation between Zero dimensional subschemes and saturated ideals

Projectivity of the Hilbert scheme

Motivation for direct limit and filtered directed limit?

The affine algebra $\Gamma(V)$ is finite-dimensional iff $V$ is finite

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