Skip to main content
Bill Thurston's user avatar
Bill Thurston's user avatar
Bill Thurston's user avatar
Bill Thurston
  • Member for 13 years, 10 months
  • Cornell University
586 votes

What's a mathematician to do?

146 votes
Accepted

Is there an underlying explanation for the magical powers of the Schwarzian derivative?

138 votes
Accepted

Lecture notes by Thurston on tiling

92 votes

Are there any very hard unknots?

79 votes
Accepted

Volumes of n-balls: what is so special about n=5?

61 votes

When can a connection Induce a Riemannian metric for which it is the Levi-Civita connection?

58 votes

Computing homotopies

54 votes

Nash embedding theorem for 2D manifolds

53 votes
Accepted

Riemannian surfaces with an explicit distance function?

48 votes

Invertible matrices of natural numbers are permutations... why?

45 votes

Riemann mapping theorem for homeomorphisms

39 votes
Accepted

Maneuvering with limited moves on $S^2$

38 votes

When does iterating $z \mapsto z^2 + c$ have an exact solution?

36 votes
Accepted

Can we add two matrices by performing an operation on their eigenvalues & eigenvectors?

34 votes
Accepted

Trapped rays bouncing between two convex bodies

34 votes

Is there a simple proof that a group of linear growth is quasi-isometric to Z?

33 votes
Accepted

What upper bounds are known for the diameter of the minimum spanning tree of $n$ uniformly random points in $[0,1]^2$?

33 votes

Transpositions of order three

32 votes
Accepted

Finite groups with elements of the same order

31 votes

Is the sphere the only surface with circular projections? Or: Can we deduce a spherical Earth by observing that its shadows on the Moon are circular?

31 votes
Accepted

Why are there no wild arcs in the plane?

30 votes
Accepted

Fair but irregular polyhedral dice

28 votes

Many flat totally geodesic surfaces ⇒ flat?

27 votes

Minimal polynomial with a given maximum in the unit interval

27 votes
Accepted

complement of a totally disconnected closed set in the plane

25 votes
Accepted

Does Riemann map depend continuously on the domain?

25 votes
Accepted

Reebless and taut foliations

25 votes
Accepted

transformation properties of divergence (of a vector field)

24 votes
Accepted

Totally geodesic surfaces in fibered 3-manifolds

24 votes
Accepted

Is there a Poincare-Hopf Index theorem for non compact manifolds?

1
2 3 4 5