User Jonas Meyer

70 votes

Most memorable titles

answered Oct 31, 2010 at 20:44

60 votes

Accepted

Must the set of lines through the origin on which a nonconstant entire function is bounded be finite?

answered Jun 27, 2010 at 22:01

43 votes

Accepted

Do sets with positive Lebesgue measure have same cardinality as R?

answered Dec 15, 2009 at 11:16

38 votes

Accepted

Are the norms of graphs dense in any interval?

answered May 9, 2010 at 6:06

37 votes

Most memorable titles

answered Oct 31, 2010 at 20:56

31 votes

Accepted

"Pick up a homological algebra book and prove all of the theorems yourself" (exercise from Lang's Algebra)

answered Jan 6, 2010 at 8:01

24 votes

Examples of common false beliefs in mathematics

answered Jul 23, 2010 at 18:39

22 votes

Accepted

Is there an index for solutions to American Mathematical Monthly problems?

answered Jun 6, 2010 at 21:46

21 votes

Accepted

Does pointwise convergence imply uniform convergence on a large subset?

answered Nov 12, 2010 at 4:27

20 votes

Accepted

Restriction of a complex polynomial to the unit circle

answered Mar 5, 2010 at 6:57

20 votes

Eigenvalues of matrix sums

answered Nov 5, 2009 at 9:02

20 votes

What are the most misleading alternate definitions in taught mathematics?

answered Dec 6, 2009 at 4:01

19 votes

When does 'positive' imply 'sum of squares'?

answered Dec 16, 2009 at 5:15

17 votes

What is the origin of the term "spectrum" in mathematics?

answered Dec 16, 2009 at 21:17

17 votes

Accepted

What is $\sum (x+\mathbb{Z})^{-2}$?

answered Jan 6, 2010 at 19:35

16 votes

Do names given to math concepts have a role in common mistakes by students?

answered Jul 18, 2010 at 20:18

15 votes

Accepted

Topological spaces whose continuous image is always closed

answered Oct 21, 2010 at 0:14

15 votes

Switching Research Fields

answered Jan 23, 2010 at 6:55

15 votes

What's your favorite equation, formula, identity or inequality?

answered Dec 24, 2009 at 4:25

13 votes

Accepted

Who invented the gamma function?

answered Dec 26, 2009 at 10:36

12 votes

Accepted

'Eigenvectors' of evolute operation

answered Jul 18, 2010 at 22:13

11 votes

Linear Algebra Problems?

answered Feb 11, 2010 at 23:34

11 votes

What programming languages do mathematicians use?

answered Jan 8, 2010 at 2:24

10 votes

When is a Banach space a Hilbert space?

answered Jan 8, 2010 at 22:16

10 votes

Can a connected planar compactum minus a point be totally disconnected?

answered Feb 28, 2010 at 0:28

10 votes

Hausdorff dimension: subset of $\mathbb{R}^n$ vs. boundary of this subset

answered Aug 9, 2010 at 19:20

9 votes

Permutation representation inner product

answered Mar 5, 2010 at 22:30

9 votes

Accepted

Simple inequality in C*-algebras

answered May 17, 2010 at 4:13

9 votes

Example of continuous function that is analytic on the interior but cannot be analytically continued?

answered Mar 27, 2010 at 1:47

8 votes

What out-of-print books would you like to see re-printed?

answered Mar 15, 2010 at 19:33

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76 Answers

Most memorable titles

Must the set of lines through the origin on which a nonconstant entire function is bounded be finite?

Do sets with positive Lebesgue measure have same cardinality as R?

Are the norms of graphs dense in any interval?

Most memorable titles

"Pick up a homological algebra book and prove all of the theorems yourself" (exercise from Lang's Algebra)

Examples of common false beliefs in mathematics

Is there an index for solutions to American Mathematical Monthly problems?

Does pointwise convergence imply uniform convergence on a large subset?

Restriction of a complex polynomial to the unit circle

Eigenvalues of matrix sums

What are the most misleading alternate definitions in taught mathematics?

When does 'positive' imply 'sum of squares'?

What is the origin of the term "spectrum" in mathematics?

What is $\sum (x+\mathbb{Z})^{-2}$?

Do names given to math concepts have a role in common mistakes by students?

Topological spaces whose continuous image is always closed

Switching Research Fields

What's your favorite equation, formula, identity or inequality?

Who invented the gamma function?

'Eigenvectors' of evolute operation

Linear Algebra Problems?

What programming languages do mathematicians use?

When is a Banach space a Hilbert space?

Can a connected planar compactum minus a point be totally disconnected?

Hausdorff dimension: subset of $\mathbb{R}^n$ vs. boundary of this subset

Permutation representation inner product

Simple inequality in C*-algebras

Example of continuous function that is analytic on the interior but cannot be analytically continued?

What out-of-print books would you like to see re-printed?