Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn
  • Member for 14 years, 2 months
  • Last seen more than a month ago
  • Aachen, Germany
19 votes
4 answers
941 views

Are there Hamilton paths in Cayley graphs of Coxeter groups?

12 votes
1 answer
1k views

Getting the most general form of Mayer-Vietoris from the Eilenberg-Steenrod axioms

10 votes
1 answer
639 views

Are functions of moderate growth a bornological space?

9 votes
1 answer
440 views

Characterising natural transformations between tensor functors

8 votes
1 answer
106 views

Infering shapes from overlap with a shifting circle

8 votes
1 answer
272 views

Eilenberg-Watts theorem for the derived category

8 votes
1 answer
117 views

Deciding positivity of real cyclotomic numbers efficiently

7 votes
1 answer
301 views

Why is Nagao's theorem the "Module theoretic version of Brauer's second main theorem"?

7 votes
1 answer
1k views

Generalization of area and coarea formula for fractional Hausdorff measures

6 votes
1 answer
270 views

Connection between the classifications of group extensions and group-graded algebras in terms of non-abelian cohomology

6 votes
1 answer
214 views

Inner automorphisms of group algebras vs. inner automorphisms of the group

6 votes
1 answer
635 views

Calculate Hausdorff measure with Frostman measures

6 votes
0 answers
223 views

Series in topological rings that only converge if almost all summands are zero

6 votes
1 answer
648 views

Homotopy of quivers

6 votes
3 answers
2k views

Sequential topological vector spaces

6 votes
1 answer
387 views

Efficient enumeration of Bruhat intervals

5 votes
0 answers
245 views

What is the relationship between Frobenius extensions and Separable extensions

5 votes
0 answers
99 views

Decomposition of the Schwartz space as a representation for the orthogonal group

4 votes
1 answer
256 views

Combinatorics of index sets multiplicities in characters of symmetric groups

3 votes
0 answers
84 views

Clifford correspondence(s) from Fong-Reynolds theorem

2 votes
1 answer
210 views

Are there always 1-dimensional projective representations

1 vote
1 answer
81 views

Name for a certain topology on boundary points of convex sets