Question

Connectedness of complex sphere

score 77 · Answer 1 · 2026-03-27 06:15:10

77

Views

Connectedness of complex sphere

Published on 27 Mar 2026 - 6:15

score 270 · Answer 2 · 2026-03-25 23:13:11

270

Views

Geometric role of Zariski's main theorem in structure theory of smooth, unramified, and étale morphisms

Published on 25 Mar 2026 - 23:13

score 40 · Answer 3 · 2026-03-26 20:16:44

40

Views

Another proof for impossibility of covering $\mathbb{R}^{n}$ with a set of varieties of cardinality less than $2^{\aleph_0}$

Published on 26 Mar 2026 - 20:16

score 539 · Answer 4 · 2018-09-18 11:31:16

539

Views

Confusion about embeddings of algebraic varieties

Published on 18 Sep 2018 - 11:31

score 297 · Answer 5 · 2026-03-30 20:37:33

297

Views

Linking the cohomology of a coherent sheaf on a curve with the cohomology of its restrictions to irreducible components

Published on 30 Mar 2026 - 20:37

score 153 · Answer 6 · 2026-03-26 06:30:48

153

Views

How do we know that the only polynomials $f$ satisfying $f(\lambda x_0,\ldots,\lambda x_n) = f( x_0,\ldots,x_n) $ are the constant polynomials?

Published on 26 Mar 2026 - 6:30

score 362 · Answer 7 · 2026-03-25 11:04:45

362

Views

Are Hodge numbers topological invariants for manifolds that admit a Kähler structure?

Published on 25 Mar 2026 - 11:04

score 217 · Answer 8 · 2018-09-19 20:22:32

217

Views

Double dual of $\mu$-semistable sheaf

Published on 19 Sep 2018 - 20:22

score 341 · Answer 9 · 2026-02-23 10:22:05

341

Views

Can a complex manifold that is not a Calabi-Yau manifold be homeomorphic to a Calabi-Yau manifold?

Published on 23 Feb 2026 - 10:22

score 1k · Answer 10 · 2026-03-25 18:24:41

1k

Views

Why are sheaves called sheaves?

Published on 25 Mar 2026 - 18:24

score 759 · Answer 11 · 2026-03-25 03:07:44

759

Views

Testing if two finite sets of points differ only by rotation (unordered, in polynomial time in size and dimension)?

Published on 25 Mar 2026 - 3:07

score 134 · Answer 12 · 2026-03-30 11:39:29

134

Views

How to guess the vector norm if we have an equation of circle for this norm?

Published on 30 Mar 2026 - 11:39

score 84 · Answer 13 · 2018-09-20 21:39:31

84

Views

If $A$ is an integral domain and $k \subset K$ is an algebraic field extension, is $A \otimes_k K$ a free $A$-module?

Published on 20 Sep 2018 - 21:39

score 23 · Answer 14 · 2018-09-20 22:47:37

23

Views

Confusion over sets of functions $x,y,z$

Published on 20 Sep 2018 - 22:47

score 179 · Answer 15 · 2026-03-26 03:12:30

179

Views

Homology of Hirzebruch surfaces

Published on 26 Mar 2026 - 3:12

List Question

Connectedness of complex sphere

Geometric role of Zariski's main theorem in structure theory of smooth, unramified, and étale morphisms

Another proof for impossibility of covering $\mathbb{R}^{n}$ with a set of varieties of cardinality less than $2^{\aleph_0}$

Confusion about embeddings of algebraic varieties

Linking the cohomology of a coherent sheaf on a curve with the cohomology of its restrictions to irreducible components

How do we know that the only polynomials $f$ satisfying $f(\lambda x_0,\ldots,\lambda x_n) = f( x_0,\ldots,x_n) $ are the constant polynomials?

Are Hodge numbers topological invariants for manifolds that admit a Kähler structure?

Double dual of $\mu$-semistable sheaf

Can a complex manifold that is not a Calabi-Yau manifold be homeomorphic to a Calabi-Yau manifold?

Why are sheaves called sheaves?

Testing if two finite sets of points differ only by rotation (unordered, in polynomial time in size and dimension)?

How to guess the vector norm if we have an equation of circle for this norm?

If $A$ is an integral domain and $k \subset K$ is an algebraic field extension, is $A \otimes_k K$ a free $A$-module?

Confusion over sets of functions $x,y,z$

Homology of Hirzebruch surfaces

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