Igor Belegradek

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Name Igor Belegradek
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On referee-author communications

jan 3 11 at 22:34 Michael Hardy 4,439●1●22●48

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Smooth thickenings of non-smoothable manifolds

may 23 at 16:54 Igor Belegradek 9,881●1●13●42

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Boundaries of noncompact contractible manifolds

mar 14 12 at 5:02 Misha 12.6k●1●26●48

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Linear groups that are nonlinear over the integers

feb 15 at 8:02 Aakumadula 2,885●1●5●13

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Does Ricci flow depend continuously on the initial metric?

mar 15 11 at 16:10 Deane Yang 12.6k●1●33●80

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1
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Which principlal bundles are locally trivial?

mar 3 11 at 20:05 Igor Belegradek 9,881●1●13●42

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Groups with finitely generated center

sep 19 at 4:40 Agol 23.9k●1●33●84

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Subgroups of amenable periodic groups

jun 2 at 12:04 Dima Savchuk 61●2

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113

Answers
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32
Examples of non-diffeomorphic smooth manifolds with diffeomorphic tangent bundle
28
If a manifold suspends to a sphere…
20
Is a free alternative to MathSciNet possible?
18
Proper subgroup of GL(n,Z) isomorphic to GL(n,Z)?
16
Finiteness of higher homotopy groups of finite complexes
16
How to escape the inclination to be a universalist or: How to learn to stop worrying and do some research.
16
Infinite groups which contain all finite groups as subgroups
15
Why do we teach calculus students the derivative as a limit?
14
Does a compact negatively curved manfiold of dimension 4 admit a cover of finite degree?
14
applications of the sphere theorem
14
representatives of the group of homotopy 7-spheres
12
Do you read the masters?
12
What is torsion in differential geometry intuitively?
12
Special Holonomy Groups for Lorentzian Manifolds
11
Simplicial volume
11
Does every smooth manifold of infinite topological type admit a complete Riemannian metric?
11
Manifold whose universal covering is a sphere but which is not a space form?
11
Cite articles or book where I first found the result?
9
Undergraduate math research
9
What would you want to see at the Museum of Mathematics?
9
4-dimensional h-cobordisms
9
Connected sum of topological manifolds
9
Hopfian and Co-Hopfian groups (examples)
9
Failure of smoothing theory for topological 4-manifolds
9
Is every (finite) group action on R^n by diffeomorphisms conjugate to a linear action?
8
exotic differentiable structures on manifolds in dimensions 5 and 6
8
$S^n \to S^m \to B$ bundle: possible?
8
Riemannian metric induced by a metric
8
What are some of the big open problems in 3-manifold theory?
8
What are the open subsets of $\mathbb{R}^n$ that are diffeomorphic to $\mathbb{R}^n$
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