User Mustafa Said - MathOverflow

16 votes

Examples of great mathematical writing

answered Apr 6, 2012 at 18:38

11 votes

Condition for two matrices to share at least one eigenvector?

answered Oct 9, 2013 at 15:42

10 votes

Nonexistence of boundary between convergent and divergent series?

answered Jun 3, 2013 at 21:59

6 votes

What is a sieve and why are sieves useful?

answered Feb 10, 2016 at 6:48

6 votes

Old books still used

answered Jan 2, 2013 at 9:00

6 votes

Interesting Calculus Questions/Exercises

answered Nov 11, 2011 at 10:54

6 votes

What are your favorite instructional counterexamples?

answered Mar 24, 2013 at 7:22

5 votes

About a possible generalization of Green-Tao's theorem

answered Mar 20, 2013 at 10:41

5 votes

Submultiplicative matrix norm: Max Norm

answered Oct 14, 2013 at 4:38

4 votes

Examples of common false beliefs in mathematics

answered Dec 8, 2013 at 6:20

4 votes

Real analysis has no applications?

answered Mar 15, 2013 at 21:12

3 votes

Are almost commuting hermitian matrices close to commuting matrices (in the 2-norm)?

answered Sep 24, 2013 at 6:27

2 votes

Does the Euler product formula diverge for any zero of the Riemann zeta function?

answered Aug 19, 2013 at 4:09

1 vote

Topics for a matrix analysis course

answered Sep 4, 2013 at 14:23

1 vote

What are your favorite instructional counterexamples?

answered Sep 21, 2017 at 6:10

1 vote

Understanding/Mastering Analysis in Topology, necessary?

answered Mar 15, 2013 at 20:57

1 vote

How to quantify noncommutativity?

answered May 12, 2012 at 9:05

1 vote

Teaching prime number theorem in a complex analysis class for physicists

answered Dec 31, 2021 at 21:15

0 votes

Nontrivial question about Fibonacci numbers?

answered Nov 26, 2020 at 6:19

0 votes

prime zeta function when $0<s<1$

answered Feb 22, 2014 at 8:27

0 votes

Norm of triangular truncation operator on rank deficient matrices

answered Jul 28, 2014 at 5:23

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21 Answers

Examples of great mathematical writing

Condition for two matrices to share at least one eigenvector?

Nonexistence of boundary between convergent and divergent series?

What is a sieve and why are sieves useful?

Old books still used

Interesting Calculus Questions/Exercises

What are your favorite instructional counterexamples?

About a possible generalization of Green-Tao's theorem

Submultiplicative matrix norm: Max Norm

Examples of common false beliefs in mathematics

Real analysis has no applications?

Are almost commuting hermitian matrices close to commuting matrices (in the 2-norm)?

Does the Euler product formula diverge for any zero of the Riemann zeta function?

Topics for a matrix analysis course

What are your favorite instructional counterexamples?

Understanding/Mastering Analysis in Topology, necessary?

How to quantify noncommutativity?

Teaching prime number theorem in a complex analysis class for physicists

Nontrivial question about Fibonacci numbers?

prime zeta function when $0<s<1$

Norm of triangular truncation operator on rank deficient matrices