HenrikRüping

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Name HenrikRüping
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Age 29
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67

Questions
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5
21
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903
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Collatz conjecture for numbers of th form $2^n +1$

jan 4 11 at 17:03 MathOverflow♦ 1●2●3

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20
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3
answers
1k
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Which spaces are inverse limits of discrete spaces ?

mar 29 12 at 20:38 Joseph Van Name 1,819●4●11

3

1
13
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2
answers
301
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Finding hyperbolic metrics by approximation

sep 26 at 14:47 HenrikRüping 5,319●5●27

3
12
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2
answers
403
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Self homeomorphisms of $S^2\times S^2$

oct 12 10 at 0:17 Ryan Budney 21.6k●1●40●101

2

3
11
votes
0
answers
460
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Are all these groups CAT(0) groups?

sep 8 10 at 6:04 HenrikRüping 5,319●5●27

2
11
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3
answers
1k
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Is a inverse limit of compact spaces again compact ?

jan 25 12 at 14:04 Ramiro de la Vega 3,610●7●15

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2
11
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4
answers
885
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Automorphisms of $SL_n(\mathbb{Z})$

mar 4 11 at 14:36 Jim Humphreys 26k●37●82

1 2 3 4 5 … 7 next

 

36

Answers
votes newest views recent
15
Proving that a group is free
11
The free group $F_2$ has index 12 in SL(2,$\mathbb{Z}$)
8
Are there space filling curves for the Hilbert cube ?
8
homotopy associative $H$-space and $coH$-space
6
Applications of homotopy groups of spheres
5
Question about exotic spheres
5
What is an explicit example of a sequence converging to two different points?
4
Topological description of Manifold with boundary
4
Projective modules over non-rational group rings
3
Artin groups whose graphs differ by one edge and coverings
3
Partial orders arising from $l$-spaces
3
How to solve f(f(x)) = cos(x) ?
2
Spectral properties of Cayley graphs
2
Lifting matrices mod 2 to integers.
2
Notion of finite dimensional simplicial space (2)
2
Which topological spaces admit a nonstandard metric?
2
Integrability of derivatives
2
Simple examples of equivariant homology and bordism
2
Principle when limits level by level don’t commute with simplicial structure
2
Oriention-Reversing Diffeomorphisms of a Manifold
2
Canonical geometric examples
2
Examples of non-metrizable spaces
1
Topology of maps between fibers of vector bundles
1
Finding lattice with short basis-vectors containing given lattice
1
max length or size of a convex set
1
For any entourage $U,V$ there’s an entourage $W$ such that $U\circ W\subseteq V\circ U$
1
Convex subsets of Hadamard manifolds
1
Pascal Triangle and Prime Numbers
1
Convex hull in CAT(0)
1
Finding saturated open sets
1 2 next

 

222

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