299

Answers
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56
$V$, $W$ are varieties. Does $V\times \mathbf{P}^1=W\times \mathbf{P}^1$ imply $V=W$?
40
What group is <a,b | a^2=b^2>?
28
Do finite groups acting on a ball have a fixed point?
26
When is a singular point of a variety smooth?
23
Non-degenerate alternating bilinear form on a finite abelian group
22
What is a square root of a line bundle?
21
Is there anything special about the Riemann surface $y^2 = x(x^{10}+11x^5-1)$?
16
Maximal ideals in a polynomial ring over the real numbers.
16
What’s coherent about coherent sheaves?
16
Intersection of subvarieties in grassmannian space
15
Fundamental group of a product of two curves
15
When two singularities $\mathbb C^n/G$ and $\mathbb C^n/G'$ are the same?
14
Wanted: an example of a natural non-K\"ahler metric on a Kahler manifold
14
Bezout’s Theorem for weighted homogeneous polynomials
14
Detecting if a polynomial is a Pfaffian
14
Kähler metric on a Zariski open subset of a non-Kähler manifold
14
Which almost complex manifolds admit a complex structure?
14
Looking for interesting actions that are not representations
14
What is a Lagrangian submanifold intuitively?
13
Can every 3-manifold be triangulated?
13
Sheaves on Contractible Analytic Spaces
12
Is there a rigid curve in a product of complex manifolds?
12
Extending birational isomorphisms between planar curves to the P^2
12
Fundamental Groups of compact Complex manifolds?
12
$\mathbb{Z}/2$ is to $\mathbb{Z}/3$ as K3 is to what?
12
Finite order automorphisms of complex projective manifolds isotopic to identity
12
Are there (-2)-curves on an Enriques surface?
12
How badly can Krull’s Hauptidealsatz fail for non-Noetherian rings?
12
Proving that a generic variety with ample canonical bundle has no automorphisms
11
Abundance for algebraic surfaces
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