7779052
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1 answers
8 votes
1k views
7 bookmarks
Does every even-dimensional sphere admit an almost complex structure?
3 answers
7 votes
402 views
3 bookmarks
1-dimensional foliation on a surface
4 answers
7 votes
2k views
2 bookmarks
section of a fiber bundle
2 answers
6 votes
482 views
3 bookmarks
symplectic manifolds
3 answers
5 votes
2k views
4 bookmarks
normal bundle on a submanifold
1 answers
4 votes
169 views
1 bookmarks
Irregular (branched) cover
0 answers
4 votes
82 views
1 bookmarks
3-manifolds with certain fundamental group
1 answers
4 votes
389 views
3 bookmarks
almost complex structures on $R^4$
1 answers
3 votes
230 views
branched cover over slice disc
0 answers
3 votes
109 views
spin structures definition
0 answers
2 votes
60 views
a diffeomorphism on a 3-manifold
1 answers
2 votes
391 views
1 bookmarks
figure-8 knot complement
1 answers
2 votes
94 views
Reeb orbit and open books
0 answers
2 votes
101 views
1 bookmarks
Action of $H^1$ on spin structures
1 answers
2 votes
377 views
1 bookmarks
Legendrian isotopy
1 answers
2 votes
182 views
Differential of a differential form without local coordinates
1 answers
2 votes
126 views
spin structure definition
0 answers
2 votes
83 views
Cellular structure on a manifold
2 answers
2 votes
134 views
is knot type invariant under diffeomorphism?
2 answers
1 votes
50 views
how to solve the following integer equation in three variables?
0 answers
1 votes
38 views
how to find continued fractions with terms less than or equal to -2?
2 answers
1 votes
87 views
matrix with all rows positive
1 answers
1 votes
176 views
Trivialization of vector bundles
2 answers
1 votes
222 views
minimal genus of surface representing a homology class
0 answers
1 votes
33 views
1 bookmarks
existence of a 1-form
0 answers
1 votes
57 views
homotopy via isotopy
2 answers
1 votes
168 views
1 bookmarks
fibered knots in $ S^3$
1 answers
1 votes
323 views
1 bookmarks
manifolds without symplicial or cell structure
0 answers
1 votes
259 views
What do we mean by $CP^2$ with reverse orientation?
1 answers
1 votes
529 views
is normal bundle of a manifold trivial?