Peter Franek's user avatar
Peter Franek's user avatar
Peter Franek's user avatar
Peter Franek
  • Member for 13 years, 5 months
  • Last seen more than a week ago
17 votes
1 answer
2k views

What can be the cohomology ring of a manifold?

15 votes
3 answers
2k views

Which submanifolds are zero sets of $\mathbb{R}^n$-valued maps?

8 votes
1 answer
412 views

Can we algorithmically contract loops in a simply connected space?

7 votes
2 answers
534 views

Classification of generously transitive groups

7 votes
2 answers
437 views

Decidability of differential equations

6 votes
0 answers
249 views

Action of $F_4$ on generalized flag manifolds

6 votes
3 answers
1k views

Complexity of solving systems of linear diophantine equations

5 votes
0 answers
187 views

Algorithmic nullhomotopies

5 votes
1 answer
283 views

Connection between framed cobordisms and zero sets

5 votes
2 answers
568 views

(Un)Decidability of the root existence problem for functions with bounded domain

4 votes
1 answer
940 views

Topological degree theory

4 votes
0 answers
442 views

Relative Hurewicz Theorem

3 votes
0 answers
178 views

Thom-Pontryagin construction for pairs

3 votes
0 answers
188 views

Converting an $n$-connected space into an $n$-reduced simplicial set

3 votes
0 answers
251 views

Is an element of the cohomotopy space trivial?

3 votes
2 answers
589 views

super-transitive group action

3 votes
0 answers
199 views

Extending simplicial complex to a manifold

3 votes
4 answers
463 views

Homology of infinite intersection

3 votes
0 answers
129 views

Robust Invariants of a solution of systems of equations

2 votes
0 answers
210 views

Invariants of solutions of systems of equations

2 votes
1 answer
273 views

computing homotopy type

2 votes
1 answer
350 views

simple connectedness problem

2 votes
0 answers
119 views

Can relative homotopy groups be represented as relative homology groups of some Moore complex?

2 votes
0 answers
67 views

When do positively invariant subset contain a given set?

2 votes
1 answer
134 views

Invariants of polynomial algebras on infinite G-modules

1 vote
1 answer
123 views

Connected representant of a framed cobordism class (reference needed)

1 vote
2 answers
928 views

Topological degree theory

1 vote
2 answers
2k views

homotopy of sphere maps

1 vote
1 answer
370 views

Constructing a deformation neighborhood

0 votes
1 answer
293 views

Gluing submanifolds along their common boundary