User algori

56 votes

Mathematical "urban legends"

answered Jan 28, 2011 at 22:07

50 votes

Can non-homeomorphic spaces have homeomorphic squares?

answered May 26, 2011 at 2:01

49 votes

What universities have laid off tenured math faculty for financial reasons?

answered Apr 29, 2011 at 0:17

46 votes

Mathematical "urban legends"

answered Apr 16, 2011 at 23:55

43 votes

Your favorite surprising connections in mathematics

answered Feb 17, 2010 at 0:06

40 votes

Math puzzles for dinner

answered Jun 24, 2010 at 4:58

36 votes

Analytic tools in algebraic geometry

answered Aug 6, 2010 at 8:07

35 votes

What are some open problems in algebraic geometry?

answered Aug 31, 2010 at 1:03

34 votes

Why do so many textbooks have so much technical detail and so little enlightenment?

answered Jan 27, 2010 at 3:54

30 votes

How has modern algebraic geometry affected other areas of math?

answered Oct 5, 2011 at 5:15

28 votes

Famous mathematicians with background in arts/humanities/law etc

answered Sep 28, 2011 at 20:43

28 votes

Mathematical "urban legends"

answered Jan 25, 2011 at 20:21

23 votes

Facts from algebraic geometry that are useful to non-algebraic geometers

answered Aug 23, 2010 at 21:23

20 votes

Accepted

(Co)homology of the Eilenberg-MacLane spaces K(G,n)

answered May 15, 2010 at 14:50

20 votes

Accepted

Are the stiefel-Whitney classes of the tangent bundle determined by the mod 2 cohomology?

answered May 30, 2010 at 16:33

20 votes

Accepted

If the total Chern class of a vector bundle factors, does it have a sub-bundle?

answered May 15, 2011 at 22:20

19 votes

Accepted

Can a Lie group as an abstract group be given more than one topology making it a Lie group?

answered Apr 20, 2011 at 8:10

19 votes

What are some of the big open problems in 3-manifold theory?

answered Jul 17, 2010 at 17:17

19 votes

Non-stably trivial bundle with trivial characteristic classes

answered Nov 18, 2012 at 22:44

18 votes

Accepted

On the fundamental group of hypersurfaces

answered Jan 6, 2011 at 13:05

18 votes

Accepted

Multiplicativity of Euler characteristic for non-orientable fibrations

answered Nov 7, 2011 at 19:42

17 votes

Accepted

Grassmannian bundle theorem

answered Jan 13, 2010 at 5:35

17 votes

Classification problem for non-compact manifolds

answered Jan 9, 2010 at 22:03

16 votes

Accepted

Rolle's theorem in n dimensions

answered Jan 2, 2010 at 1:47

16 votes

Is there a complex structure on the 6-sphere?

answered Jan 21, 2010 at 23:02

16 votes

Why is cotangent more canonical than tangent?

answered Mar 7, 2010 at 0:13

16 votes

Birational invariants and fundamental groups

answered Jul 22, 2010 at 23:46

16 votes

Accepted

How to prove that a projective variety is a finite CW complex?

answered Jun 3, 2010 at 14:50

16 votes

Accepted

singular homology of a differential manifold

answered Apr 10, 2010 at 15:18

16 votes

How do professional mathematicians learn new things?

answered Aug 2, 2010 at 22:57

Stack Exchange Network

173 Answers

Mathematical "urban legends"

Can non-homeomorphic spaces have homeomorphic squares?

What universities have laid off tenured math faculty for financial reasons?

Mathematical "urban legends"

Your favorite surprising connections in mathematics

Math puzzles for dinner

Analytic tools in algebraic geometry

What are some open problems in algebraic geometry?

Why do so many textbooks have so much technical detail and so little enlightenment?

How has modern algebraic geometry affected other areas of math?

Famous mathematicians with background in arts/humanities/law etc

Mathematical "urban legends"

Facts from algebraic geometry that are useful to non-algebraic geometers

(Co)homology of the Eilenberg-MacLane spaces K(G,n)

Are the stiefel-Whitney classes of the tangent bundle determined by the mod 2 cohomology?

If the total Chern class of a vector bundle factors, does it have a sub-bundle?

Can a Lie group as an abstract group be given more than one topology making it a Lie group?

What are some of the big open problems in 3-manifold theory?

Non-stably trivial bundle with trivial characteristic classes

On the fundamental group of hypersurfaces

Multiplicativity of Euler characteristic for non-orientable fibrations

Grassmannian bundle theorem

Classification problem for non-compact manifolds

Rolle's theorem in n dimensions

Is there a complex structure on the 6-sphere?

Why is cotangent more canonical than tangent?

Birational invariants and fundamental groups

How to prove that a projective variety is a finite CW complex?

singular homology of a differential manifold

How do professional mathematicians learn new things?