Douglas S. Stones's user avatar
Douglas S. Stones's user avatar
Douglas S. Stones's user avatar
Douglas S. Stones
  • Member for 14 years, 4 months
  • Last seen more than 10 years ago
27 votes
10 answers
5k views

Value of "of course" in the mathematical literature

17 votes
4 answers
10k views

What is the p-adic valuation of a number?

16 votes
6 answers
5k views

If Erdős is published as Erdös in a paper, which do I cite?

13 votes
0 answers
1k views

Finding a chromatic polynomial by polynomial fitting

12 votes
0 answers
255 views

Proving that the set of $\lfloor n/3 \rfloor+1$ partial Latin squares given by Pebody is unavoidable?

10 votes
1 answer
740 views

What can I say about the permutation $\alpha\beta$ if I know the permutation $\beta\alpha$?

9 votes
4 answers
764 views

Does there exist a pure recurrence formula with polynomial coefficients for Fibonacci(2^n)?

9 votes
2 answers
789 views

Which integer recurrence relations can be formulated as counting walks on a graph?

9 votes
5 answers
2k views

How many Tutte polynomials of complete graphs are known?

8 votes
2 answers
2k views

Embedding points in 2D based on distance estimates?

8 votes
1 answer
803 views

(0,1)-matrix congruence: is it known?

6 votes
3 answers
2k views

Hamilton cycle decompositions of the complete graph

6 votes
3 answers
2k views

Which journals publish PhD abstracts?

6 votes
2 answers
459 views

What is the largest family F of subsets of [n] for which any two distinct sets A and B in F have an intersection of size at most min(|A|,|B|)/2?

6 votes
2 answers
1k views

Generalisations of Petersen's 2-factor theorem?

6 votes
2 answers
730 views

Force-directed graph drawing in 1D?

6 votes
1 answer
322 views

Almost all loops have a trivial automorphism group; almost all groups have a non-trivial automorphism group. What goes on in between?

5 votes
0 answers
161 views

Does there exist $a,n \in \mathbb{Z}^+$, where $n \geq 2$, such that $a, an, an^2,an^3,\ldots,an^5$ are all palindromes in base 10?

5 votes
1 answer
724 views

A more efficient way to generate random graphs with a given degree sequence?

5 votes
0 answers
182 views

Existence problem for a generalisation of Latin squares (matrices with fixed row and column sets)

4 votes
1 answer
391 views

Does a graph with all vertex degrees divisible by 3 contain a cubic subgraph?

4 votes
1 answer
631 views

What packages for subgraph enumeration are available?

4 votes
1 answer
1k views

Combinatorics journals processing time

4 votes
1 answer
534 views

Diagonally-cyclic Steiner Latin squares

3 votes
2 answers
405 views

What is the number of k-regular subgraphs of $K_{12,12}$?

3 votes
1 answer
243 views

How to resolve an issue with Pranesachar et al.'s formula for the number of four-line Latin rectangles?

3 votes
1 answer
129 views

A graph $G$ with two $K_6$ subgraphs, in which any one-factor of $G$ induces a one-factor in exactly one of the $K_6$ subgraphs?

2 votes
2 answers
783 views

In how many ways can we generate a given bipartite multigraph via the bipartite configuration model?

2 votes
1 answer
310 views

An example of when nauty, on two different platforms, gives different canonical labels for the same input graph? [closed]

2 votes
2 answers
252 views

Classification of strongly lcm-closed sets