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Examples of finite dimensional non simple non abelian Lie algebras
4
When does the set of isometries form a group?
2
Importance of Poincaré recurrence theorem? Any example?
7
Uniform lattices in semisimple Lie groups
2
A large deviation / binomial coefficients bound
8
German mathematical terms like “Nullstellensatz”
8
A set for which it is hard to determine whether or not it is countable.
5
Automorphisms of $SL_n(\mathbb{Z})$
4
Amenable exponential growth
2
Problems where we can’t make a canonical choice, solved by looking at all choices at once
0
When is the group of homeomorphisms of a compact space locally compact?
22
Zariski-closed subsemigroups of SL_n(C) are groups
2
arithmetic groups VS. Zariski dense discrete subgroups?
11
Is there a group homeomorphic to but not homeomorphically isomorphic to the circle group?
0
Variants of point fixed theorem
18
Wonderful applications of the Vandermonde determinant
0
Symmetric subspace of linear operators
5
discrete subgroups in p-adic Lie groups?
18
Jokes in the sense of Littlewood: examples?
3
description of functions of conditionally negative type on a group
2
Undergraduate Probability Topics
20
Ultraproducts of finite cyclic groups
3
Dense cyclic subgroup
12
prime ideals in C([0,1])
7
Any factor group of a finite abelian group is isomorphic to some subgroup
1
Are there locally compact groups which have no compact open subgroups and no discrete infinite cyclic subgroups?
4
Function with range equal to whole reals on every open set
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Subspaces of finite codimension in Banach spaces
0
What are the normal subgroups of a direct product?
1
Are extensions of linear groups linear?
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