Ryan Budney's user avatar
Ryan Budney's user avatar
Ryan Budney's user avatar
Ryan Budney
  • Member for 14 years, 4 months
  • Last seen this week
88 votes
Accepted

Can every manifold be given an analytic structure?

76 votes
Accepted

Geometric interpretation of characteristic polynomial

65 votes
Accepted

The view from inside of a mirrored tetrahedron

59 votes

Depressed graduate student.

52 votes

Theoretical physics: Why not just $\mathbb{R}^4$?

51 votes

The half-life of a theorem, or Arnold's principle at work

48 votes

Intuition behind Thom class

43 votes

Which mathematical ideas have done most to change history?

41 votes
Accepted

What manifolds are bounded by RP^odd?

39 votes

Your favorite surprising connections in mathematics

39 votes
Accepted

What are "good" examples of spin manifolds?

38 votes
Accepted

Why should I prefer bundles to (surjective) submersions?

38 votes

What are the most misleading alternate definitions in taught mathematics?

34 votes
Accepted

Homotopy Groups of Connected Sums

29 votes

Classification problem for non-compact manifolds

29 votes

Why is it useful to classify the vector bundles of a space?

29 votes
Accepted

Smooth homotopy theory

28 votes
Accepted

Can we decompose Diff(MxN)?

28 votes

Square roots of $\mathbb R^{2n}$

27 votes

What are the open subsets of $\mathbb{R}^n$ that are diffeomorphic to $\mathbb{R}^n$

26 votes
Accepted

Strong Whitney embedding theorem for non-compact manifolds

25 votes
Accepted

Unstable homotopy groups of spheres beyond Toda's range

25 votes

Classification of homology 3-spheres?

25 votes

Is the universal covering of an open subset of $\mathbb{R}^n$ diffeomorphic to an open subset of $\mathbb{R}^n$ ?

24 votes

Is it possible to improve the Whitney embedding theorem?

23 votes

Examples of non-diffeomorphic smooth manifolds with diffeomorphic tangent bundle

22 votes

Are there any very hard unknots?

22 votes

How to see isometries of figure 8 knot complement

22 votes
Accepted

What manifolds are boundaries of euclidian spaces ?

21 votes

Is anything known about this braid group quotient?

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