User abx

48 votes

Mathematical research published in the form of poems

answered Dec 29, 2013 at 16:19

40 votes

Has philosophy ever clarified mathematics?

ho.history-overview big-list mathematical-philosophy

answered Oct 1, 2014 at 6:25

37 votes

Accepted

Rachinsky quintets

nt.number-theory

answered Jan 4, 2014 at 17:49

35 votes

is the Hodge conjecture birationally invariant?

ag.algebraic-geometry hodge-theory birational-geometry

answered Jan 26, 2014 at 21:04

34 votes

Is there a differentiable map surjective from low to high dimension？

gn.general-topology ca.classical-analysis-and-odes

answered Oct 2, 2021 at 8:13

32 votes

Various authors of the Bourbaki's books

ho.history-overview machine-learning bourbaki

answered Mar 24, 2021 at 5:49

31 votes

Research-only permanent positions worldwide

soft-question career advice

answered Jun 24, 2017 at 18:38

29 votes

Manifolds admitting flat connections

dg.differential-geometry riemannian-geometry connections

answered Oct 11, 2014 at 14:23

25 votes

Accepted

Can any curve be embedded into $\mathbb{P}^3$?

ag.algebraic-geometry algebraic-curves

answered Jan 21, 2014 at 10:29

24 votes

Fibrations with isomorphic fibers, but not Zariski locally trivial

ag.algebraic-geometry examples

answered Feb 23, 2014 at 16:56

24 votes

Most intriguing mathematical epigraphs

soft-question big-list mathematical-writing math-communication

answered Sep 29, 2015 at 12:25

23 votes

Accepted

Realizing algebraic curves as complete intersections

ag.algebraic-geometry algebraic-curves complete-intersection

answered Aug 29, 2014 at 20:14

21 votes

Accepted

GAGA for stacks

ag.algebraic-geometry complex-geometry stacks gaga

answered Dec 17, 2018 at 21:09

18 votes

Accepted

Differentiability of eigenvalues of positive-definite symmetric matrices

linear-algebra ca.classical-analysis-and-odes sp.spectral-theory eigenvalues real-algebraic-geometry

answered Apr 27, 2020 at 5:34

18 votes

Rational curves on varieties of general type

ag.algebraic-geometry algebraic-surfaces

answered May 17, 2016 at 15:40

17 votes

Accepted

Why is Klein's representation of $PSL_2(\mathbb{F}_7)$ hard to obtain?

ag.algebraic-geometry gr.group-theory rt.representation-theory finite-groups

answered Nov 5, 2014 at 16:15

17 votes

Accepted

Vector bundles on vector bundles

ag.algebraic-geometry complex-geometry homotopy-theory vector-bundles

answered Mar 4, 2014 at 11:45

16 votes

Accepted

Minimal number of intersection of curves in $\mathbb P^2$

ag.algebraic-geometry algebraic-curves

answered Feb 10, 2014 at 11:10

16 votes

Accepted

What is the role of projective spaces in GAGA?

ag.algebraic-geometry complex-geometry

answered Oct 1, 2015 at 6:23

15 votes

Accepted

Line bundles and modular forms

nt.number-theory modular-forms

answered Aug 15, 2017 at 14:42

15 votes

Accepted

Is the higher direct image sheaf of a locally free sheaf over $\mathbb{P}^1$ locally free?

ag.algebraic-geometry cohomology sheaf-cohomology

answered Nov 17, 2013 at 20:51

14 votes

What is the point of reading classics over modern treatments?

soft-question books

answered Jan 7, 2021 at 15:57

14 votes

Accepted

Is the big cell a principal open set?

ag.algebraic-geometry algebraic-groups

answered Apr 12, 2014 at 9:10

14 votes

Accepted

Flatness from constancy of dimension of fibers

ag.algebraic-geometry flatness

answered Jan 14, 2017 at 10:08

14 votes

Accepted

Quotients of curves of genus $4$ by a free $\mathbb{Z}/ 3 \mathbb{Z}$-action

ag.algebraic-geometry algebraic-curves riemann-surfaces

answered Jan 29, 2016 at 11:46

13 votes

Accepted

Must a canonical line bundle be associated to a cartier divisor?

ag.algebraic-geometry complex-geometry

answered May 12, 2014 at 16:34

13 votes

Accepted

Pseudo-automorphisms on Fano varieties

ag.algebraic-geometry birational-geometry fano-varieties

answered Aug 22, 2014 at 7:56

12 votes

Accepted

diagonal cubic hypersurfaces

ag.algebraic-geometry arithmetic-geometry birational-geometry

answered Oct 6, 2021 at 9:57

12 votes

Accepted

A lagrangian version of the Withney theorem

sg.symplectic-geometry smooth-manifolds

answered Jan 11, 2014 at 11:32

12 votes

Descent of sheaves under galois covering

ag.algebraic-geometry descent galois-descent

answered Jan 9, 2016 at 15:45

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506 Answers

Mathematical research published in the form of poems

Has philosophy ever clarified mathematics?

Rachinsky quintets

is the Hodge conjecture birationally invariant?

Is there a differentiable map surjective from low to high dimension？

Various authors of the Bourbaki's books

Research-only permanent positions worldwide

Manifolds admitting flat connections

Can any curve be embedded into $\mathbb{P}^3$?

Fibrations with isomorphic fibers, but not Zariski locally trivial

Most intriguing mathematical epigraphs

Realizing algebraic curves as complete intersections

GAGA for stacks

Differentiability of eigenvalues of positive-definite symmetric matrices

Rational curves on varieties of general type

Why is Klein's representation of $PSL_2(\mathbb{F}_7)$ hard to obtain?

Vector bundles on vector bundles

Minimal number of intersection of curves in $\mathbb P^2$

What is the role of projective spaces in GAGA?

Line bundles and modular forms

Is the higher direct image sheaf of a locally free sheaf over $\mathbb{P}^1$ locally free?

What is the point of reading classics over modern treatments?

Is the big cell a principal open set?

Flatness from constancy of dimension of fibers

Quotients of curves of genus $4$ by a free $\mathbb{Z}/ 3 \mathbb{Z}$-action

Must a canonical line bundle be associated to a cartier divisor?

Pseudo-automorphisms on Fano varieties

diagonal cubic hypersurfaces

A lagrangian version of the Withney theorem

Descent of sheaves under galois covering