Question

Can the complement of a projective variety be isomorphic to an affine variety?

score 462 · Answer 1 · 2018-10-24 20:27:05

462

Views

Can the complement of a projective variety be isomorphic to an affine variety?

Published on 24 Oct 2018 - 20:27

score 427 · Answer 2 · 2018-10-25 01:48:23

427

Views

Is the set rational points on the unit circle isomorphic to $\mathbb{Q}$ as affine varieties?

Published on 25 Oct 2018 - 1:48

score 571 · Answer 3 · 2026-03-26 07:41:20

571

Views

Fibers vs Stalks

Published on 26 Mar 2026 - 7:41

score 54 · Answer 4 · 2018-10-25 03:32:43

54

Views

Local trivialization for cotangent space of algebraic variety

Published on 25 Oct 2018 - 3:32

score 229 · Answer 5 · 2026-04-06 05:24:36

229

Views

When is a scheme topologically simply connected?

Published on 06 Apr 2026 - 5:24

score 52 · Answer 6 · 2026-03-26 07:41:30

52

Views

Characterizing Morphism of Sheaves

Published on 26 Mar 2026 - 7:41

score 31 · Answer 7 · 2026-03-26 07:46:32

31

Views

Is the canonical morphism $\operatorname{Pre}(\operatorname{im}\theta) \to \operatorname{im}\theta$ injective?

Published on 26 Mar 2026 - 7:46

score 175 · Answer 8 · 2018-10-25 19:22:53

175

Views

Intersection of spheres seems to produce equation of plane

Published on 25 Oct 2018 - 19:22

score 35 · Answer 9 · 2026-03-26 07:41:18

35

Views

Is the morphism labeled by red rectangle injective?

Published on 26 Mar 2026 - 7:41

score 82 · Answer 10 · 2026-03-25 01:18:42

82

Views

From root and weight lattices of SU(N) to $\theta$-functions as sections of a line bundle and $CP$-space

Published on 25 Mar 2026 - 1:18

score 416 · Answer 11 · 2018-10-25 22:21:38

416

Views

Hyperplane is the zero set of a single variable by a linear change of coordinates?

Published on 25 Oct 2018 - 22:21

score 238 · Answer 12 · 2018-10-25 22:28:34

238

Views

A question about Bezout's theorem and general algebraic curves.

Published on 25 Oct 2018 - 22:28

score 158 · Answer 13 · 2018-10-26 04:30:27

158

Views

Geometric intuition of flatness of completion

Published on 26 Oct 2018 - 4:30

score 115 · Answer 14 · 2026-03-26 07:43:31

115

Views

Morphism of sheaves property

Published on 26 Mar 2026 - 7:43

score 343 · Answer 15 · 2026-04-07 00:21:58

343

Views

Composition of finite flat morphisms cancellation

Published on 07 Apr 2026 - 0:21

List Question

Can the complement of a projective variety be isomorphic to an affine variety?

Is the set rational points on the unit circle isomorphic to $\mathbb{Q}$ as affine varieties?

Fibers vs Stalks

Local trivialization for cotangent space of algebraic variety

When is a scheme topologically simply connected?

Characterizing Morphism of Sheaves

Is the canonical morphism $\operatorname{Pre}(\operatorname{im}\theta) \to \operatorname{im}\theta$ injective?

Intersection of spheres seems to produce equation of plane

Is the morphism labeled by red rectangle injective?

From root and weight lattices of SU(N) to $\theta$-functions as sections of a line bundle and $CP$-space

Hyperplane is the zero set of a single variable by a linear change of coordinates?

A question about Bezout's theorem and general algebraic curves.

Geometric intuition of flatness of completion

Morphism of sheaves property

Composition of finite flat morphisms cancellation

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