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94
Magic trick based on deep mathematics (2)
37
What would you want to see at the Museum of Mathematics? (2)
22
Examples of common false beliefs in mathematics.
17
Why is the fundamental group of a compact Riemann surface not free ?
15
Teichmuller Theory introduction
14
Is this a sleight of hand or a video edit?
13
Collapsible group words
12
What group is <a,b | a^2=b^2>?
12
Finding hyperbolic metrics by approximation
12
In knot theory: Benefits of working in $S^3$ instead of $\mathbb{R}^3$?
10
Hyperbolicity on Riemann Surfaces
10
The kernel of the map from the handlebody group to Outer automorphisms of a free group
9
Problems known to be in both NP and coNP, but not known to be in P
9
can you fool SnapPea?
9
Ramified covers of S^n
9
Gromov’s Hyperbolicity and Positive Cheeger Constant in Planar Graphs
8
Relationship between hyperbolicity in group theory and hyperbolicity in geometry
8
Books you would like to see translated into English.
8
Drawing of the eight Thurston geometries?
8
It is well-known that hyperbolic space is delta-hyperbolic, but what is delta?
7
Two solid N_3 glued by its boundary
7
How to rigorously prove that simple closed curves on a surface are primitive closed curves ?
7
Are there any very hard unknots?
7
riemannian length of an element of the fundamental group of a manifold
7
Hyperbolic 3-manifolds with no geometrically finite structure
6
The action of torsion of $MCG(S)$ on curve complex
6
Connectedness of the thick part of a hyperbolic manifold?
6
Sufficient conditions for a 3D tetrahedral complex to be homeomorphic to a 3D ball
6
Why can’t the Klein bottle embed in $\mathbb{R}^3$?
6
Is there a simple proof that a group of linear growth is quasi-isometric to Z?
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