User Noah Stein

78 votes

Mistakes in mathematics, false illusions about conjectures

answered Jun 3, 2014 at 13:48

28 votes

Computer science for mathematicians

answered Jan 5, 2011 at 17:24

22 votes

Is all non-convex optimization heuristic?

answered Jul 20, 2010 at 13:31

20 votes

Why are matrices ubiquitous but hypermatrices rare?

answered Dec 2, 2010 at 16:12

20 votes

Submitting a companion paper with detailed proofs ?

answered Jan 16, 2014 at 15:43

20 votes

Accepted

Prove that matrix is positive definite

answered Mar 8, 2017 at 21:26

16 votes

Independence of P = NP?

answered Dec 21, 2010 at 4:02

16 votes

Accepted

Is Conway's base-13 function measurable?

answered Jul 20, 2010 at 14:43

14 votes

A Learning Roadmap request: From high-school to mid-undergraduate studies

answered Jun 15, 2010 at 23:32

14 votes

Accepted

Effective algorithm to test positivity

answered Aug 25, 2010 at 16:38

14 votes

Non-split extension of the rationals by the integers

answered Aug 24, 2012 at 3:21

12 votes

Accepted

Existence of a sink in directed graphs with a certain structure

answered Mar 6, 2011 at 18:35

11 votes

Problems where we can't make a canonical choice, solved by looking at all choices at once

answered Dec 21, 2010 at 20:58

11 votes

Accepted

Non-negative quadratic maximization

answered Dec 9, 2010 at 23:08

11 votes

Accepted

Are the banded versions of a positive definite matrix positive definite?

answered Jun 29, 2010 at 14:45

10 votes

Accepted

notation for finite sequence with one element is removed

answered Dec 13, 2010 at 21:25

10 votes

Accepted

When is it possible to construct a joint law from its two-dimensional marginals?

answered Oct 27, 2010 at 16:09

10 votes

The Fundamental Theorem of Calculus in Lebesgue Theory

answered Jul 14, 2010 at 14:01

10 votes

Accepted

"sinc-ing" integral

answered Mar 1, 2017 at 23:26

10 votes

Accepted

Characterising semi-definite positiveness on vectors with non-negative entries

answered Jul 24, 2012 at 17:37

10 votes

Existence of unknowable algorithms ?

answered Apr 5, 2013 at 14:53

9 votes

Accepted

Semiring naturally associated to any monoid?

answered Feb 21, 2013 at 13:43

9 votes

Accepted

Comparing two numbers given their factorization

answered Jan 29, 2014 at 18:17

9 votes

Accepted

Can a perturbation of a matrix product always be represented as product of perturbations of its factor matrices?

answered Mar 15, 2017 at 3:56

9 votes

Accepted

minimize the sum of absolute eigenvalues

answered Jun 8, 2010 at 21:34

8 votes

The concept of duality

answered Aug 26, 2011 at 9:25

8 votes

Software for symbolic matrix calculus?

answered Mar 2, 2012 at 14:03

8 votes

Is there research on Machine Learning techniques to discover conjectures (theorems) in a wide range of mathematics beyond mathematical logic?

answered Feb 19, 2016 at 15:51

8 votes

What is the maximum entropy distribution on the natural numbers?

answered Dec 11, 2013 at 1:37

8 votes

Accepted

Sum of two independent random variables

answered Mar 17, 2014 at 16:16

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128 Answers

Mistakes in mathematics, false illusions about conjectures

Computer science for mathematicians

Is all non-convex optimization heuristic?

Why are matrices ubiquitous but hypermatrices rare?

Submitting a companion paper with detailed proofs ?

Prove that matrix is positive definite

Independence of P = NP?

Is Conway's base-13 function measurable?

A Learning Roadmap request: From high-school to mid-undergraduate studies

Effective algorithm to test positivity

Non-split extension of the rationals by the integers

Existence of a sink in directed graphs with a certain structure

Problems where we can't make a canonical choice, solved by looking at all choices at once

Non-negative quadratic maximization

Are the banded versions of a positive definite matrix positive definite?

notation for finite sequence with one element is removed

When is it possible to construct a joint law from its two-dimensional marginals?

The Fundamental Theorem of Calculus in Lebesgue Theory

"sinc-ing" integral

Characterising semi-definite positiveness on vectors with non-negative entries

Existence of unknowable algorithms ?

Semiring naturally associated to any monoid?

Comparing two numbers given their factorization

Can a perturbation of a matrix product always be represented as product of perturbations of its factor matrices?

minimize the sum of absolute eigenvalues

The concept of duality

Software for symbolic matrix calculus?

Is there research on Machine Learning techniques to discover conjectures (theorems) in a wide range of mathematics beyond mathematical logic?

What is the maximum entropy distribution on the natural numbers?

Sum of two independent random variables