User Peter Dukes

7 votes

Is discrete mathematics mainstream?

answered Jan 8, 2014 at 22:14

5 votes

What are the major open problems in design theory nowaday?

answered Jan 8, 2014 at 21:11

5 votes

Accepted

An intutive reason why a "distance" metric may be a poor one for a procedure where we attempt to modify a string (mutating 0 OR 1 bits)

answered Jan 21, 2014 at 22:26

5 votes

Accepted

Could a perfect squared square be split into two perfect squared squares?

answered Mar 24, 2014 at 15:54

4 votes

Hot-topics in error correcting coding related to interesting math. ?

answered Jan 9, 2014 at 8:04

4 votes

Linear algebra proofs in combinatorics?

answered Jan 9, 2014 at 8:27

4 votes

Extremal examples for a folklore lemma on subgraphs of large minimum degree

answered Apr 10, 2014 at 17:24

4 votes

Accepted

Can we sometimes define the parity of a set?

answered Apr 23, 2014 at 19:23

4 votes

Are all almost regular graphs obvious?

answered May 28, 2014 at 5:33

3 votes

A general formula for the number of conjugacy classes of $\mathbb{S}_n \times \mathbb{S}_n$ acted on by $ \mathbb{S}_n$

answered Apr 4, 2014 at 22:22

3 votes

Accepted

Hitting sets (aka covers aka transversals) of Steiner triple systems

answered Apr 5, 2014 at 19:42

2 votes

Is the domination number of a combinatorial design determined by the design parameters?

answered Mar 9, 2014 at 9:54

2 votes

Coin problem with permutations

answered Mar 14, 2014 at 23:07

2 votes

Constructions of $2-(v,3,3)$-designs

answered Jan 8, 2014 at 20:04

1 vote

All $2$-designs arising from the action of the affine linear group on the field of prime order

answered Nov 7, 2014 at 10:22

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15 Answers

Is discrete mathematics mainstream?

What are the major open problems in design theory nowaday?

An intutive reason why a "distance" metric may be a poor one for a procedure where we attempt to modify a string (mutating 0 OR 1 bits)

Could a perfect squared square be split into two perfect squared squares?

Hot-topics in error correcting coding related to interesting math. ?

Linear algebra proofs in combinatorics?

Extremal examples for a folklore lemma on subgraphs of large minimum degree

Can we sometimes define the parity of a set?

Are all almost regular graphs obvious?

A general formula for the number of conjugacy classes of $\mathbb{S}_n \times \mathbb{S}_n$ acted on by $ \mathbb{S}_n$

Hitting sets (aka covers aka transversals) of Steiner triple systems

Is the domination number of a combinatorial design determined by the design parameters?

Coin problem with permutations

Constructions of $2-(v,3,3)$-designs

All $2$-designs arising from the action of the affine linear group on the field of prime order