mme's user avatar
mme's user avatar
mme's user avatar
mme
  • Member for 10 years, 6 months
  • Last seen this week
147 votes
10 answers
16k views

What non-categorical applications are there of homotopical algebra?

73 votes
1 answer
3k views

Does $\Bbb{CP}^{2n} \# \Bbb{CP}^{2n}$ ever support an almost complex structure?

23 votes
2 answers
812 views

Classification of fake (quaternionic, octonionic) projective spaces

23 votes
1 answer
1k views

What motivated Rademacher's contour along the Ford circles?

21 votes
0 answers
738 views

Is the mapping class group of $\Bbb{CP}^n$ known?

16 votes
0 answers
408 views

Survey of known results on equivariant transversality

14 votes
0 answers
328 views

Are there Alexander-Whitney maps in geometric homology?

13 votes
0 answers
452 views

Singular cohomology of $BG$ and Borel cohomology of $G$

10 votes
0 answers
177 views

A minimal $\mathbb Z/2$-invariant Morse function on $U(n)$

6 votes
0 answers
131 views

What is the monoid of skew-symmetric trilinear forms on finite abelian groups?

5 votes
1 answer
792 views

Why does the Gluck twist on a spun knot give the standard $S^4$?