Alexey Muranov's user avatar
Alexey Muranov's user avatar
Alexey Muranov's user avatar
Alexey Muranov
  • Member for 12 years, 2 months
  • Last seen this week
27 votes
1 answer
832 views

Can closed compacts in a topological group behave "paradoxically" with respect to unions, intersections, and one-sided translations?

21 votes
6 answers
4k views

Topological characterization of the closed interval $[0,1]$

16 votes
5 answers
3k views

Compactness of the Hilbert cube without the Axiom of Choice

14 votes
2 answers
971 views

Are acyclic subcomplexes of finite contractible 2-complexes contractible?

12 votes
1 answer
921 views

Why did Alonzo Church choose the letter $\lambda$ as the "binding operator"?

8 votes
1 answer
256 views

Need a good name for an algorithmic problem in groups that generalizes the conjugacy problem

7 votes
2 answers
661 views

Is the Euler characteristic of aspherical connected 2-complexes at most 1? (No!) What can be said about subcomplexes of 2-complexes deformation retractible onto graphs.

6 votes
2 answers
212 views

Formal languages with non-unique interpretations of terms

5 votes
1 answer
329 views

To what extent differentiable mappings of an affine line into a manifold determine its differentiable structure? What about mappings of a plane?