Bruno Martelli

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Name Bruno Martelli
Member for 3 years
Seen 17 mins ago
Website
Location Pisa (Italy)
Age 40
Assistant professor (ricercatore) at Math Dept (University of Pisa)
11

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Which manifolds decompose into pants?

dec 13 at 20:55 Bruno Martelli 4,732●1●13●33

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Maximal euler characteristic of surfaces bounding two fixed curves

may 19 11 at 15:56 Agol 23.9k●1●33●85

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Which unitary (permutation-)representations are isolated?

feb 17 12 at 8:53 Alain Valette 6,429●14●26

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51

Answers
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52
What are some examples of colorful language in serious mathematics papers?
34
What makes four dimensions special?
31
Basic results with three or more hypotheses
21
A question about vector fields
21
Kirby calculus and local moves
18
Connected sum of topological manifolds
17
Random manifolds
16
Can a smooth, immersed loop in R^2 become not nullhomotopic by removing a point?
14
How can there be topological 4-manifolds with no differentiable structure?
14
Theorems that are ‘obvious’ but hard to prove
14
fundamental group and complete invariant of irreducible 3-manifolds
10
Is the topological concept of collapsible useful?
10
Is every real n-manifold isomorphic to a quotient of $\mathbb{R}^n$?
10
Does a fixed-point free “homotopy involution” imply that a manifold bounds?
9
In knot theory: Benefits of working in $S^3$ instead of $\mathbb{R}^3$?
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Is it possible to improve the Whitney embedding theorem?
8
Existing proofs of Rokhlin’s theorem for PL manifolds
8
Hyperbolic Brunnian links and rectangular cusp shapes
7
Irreducible homology 3-spheres that bound smooth contractible manifolds
7
Understanding four manifolds (more details inside)
7
Usefulness of using TQFTs
7
whether a kind of surgery can go on infinitely many steps?
7
Examples of acylindrical 3-manifolds
7
Applications of knot theory
7
Reference for the proof of this statement?
7
Simplifying triangulations of 3-manifolds
7
A question on PL-topology and polytopal complex
7
What are some of the big open problems in 3-manifold theory?
6
Is the Action of the mapping class group transitive on embedded arcs?
6
A property of continuous maps with respect to compact subsets
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