Per Alexandersson's user avatar
Per Alexandersson's user avatar
Per Alexandersson's user avatar
Per Alexandersson
  • Member for 14 years, 5 months
  • Last seen this week
11 votes

Theorems with many distinct proofs

11 votes

What problem would you base your mathcoin on?

11 votes

Has incorrect notation ever led to a mistaken proof?

11 votes

Some interesting and elementary topics with connections to the representation theory?

10 votes

Nontrivially fillable gaps in published proofs of major theorems

10 votes

Examples of integer sequences coincidences

10 votes
Accepted

Seeking an explanation for a peculiar factorization

10 votes

What are examples of good toy models in mathematics?

10 votes

Examples of theorems with proofs that have dramatically improved over time

10 votes

Reference for combinatorics with view towards representation theory/algebraic geometry

9 votes

Useful tricks in experimental mathematics

9 votes

A game of stones

9 votes
Accepted

for which values of $\theta$ does this equation $x_{n+1}=\cos(\theta)x^2_{n}-\sin(\theta)x^2_{n-1}$ have bounded solutions?

9 votes

Which polynomial's roots are its coefficients?

9 votes

Important formulas in combinatorics

9 votes
Accepted

Which region in the plane with a given area has the most domino tilings?

9 votes
Accepted

I want to know the name of or any references for a matrix in the book "The representation theory of the symmetric groups" by Gordon James

8 votes

Counting configurations on a 2xn board under restrictions

8 votes

Binomial Identity

7 votes
Accepted

Prove that a particular polynomial sequence is a Sturm sequence

7 votes

What recent discoveries have amateur mathematicians made?

7 votes

Should I not cite an arxiv.org paper which otherwise seems to be unpublished?

7 votes

A book you would like to write

7 votes

Combinatorial databases

7 votes

Examples of theorems misapplied to non-mathematical contexts

7 votes
Accepted

New formula for counting semi-standard Young tableaux?

7 votes

Can two non-equivalent polytopes of same dimension have the same graph?

7 votes

Symmetric group action on Young Tableaux

7 votes

Which journals publish short notes in discrete mathematics?

6 votes
Accepted

Optimization of points on a plane

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