User Padraig Ó Catháin

27 votes

Unrigorous British mathematics prior to G.H. Hardy

answered May 11, 2022 at 11:31

9 votes

Cardinality of the maximum points of the determinant on matrices with entries in [-1, 1]

answered Mar 8, 2022 at 12:54

8 votes

Are these two methods for constructing Hadamard matrices known?

answered Nov 6, 2023 at 9:43

6 votes

Isomorphism testing in STS(13)

answered Mar 17, 2014 at 1:05

5 votes

Distribution of the powers of a primitive element of a finite field

answered Feb 1, 2013 at 6:46

5 votes

Accepted

Creating a Latin rectangle from a projective plane

answered Mar 18, 2015 at 1:29

5 votes

Accepted

What is the mathematician's definition of the determinant?

answered Jan 11 at 12:14

4 votes

Accepted

For which finite projective planes can the incidence structure be written as a circulant matrix?

answered Jan 29, 2018 at 20:29

3 votes

A family of difference sets (paper by A. L. Whiteman)

answered May 4, 2021 at 8:25

3 votes

A circulant coin weighing problem

answered Jun 1, 2015 at 11:35

3 votes

Large Intersecting Subsets of a Set

answered Oct 24, 2012 at 11:25

2 votes

A combinatorial optimization problem

answered Oct 14, 2015 at 18:11

2 votes

Permutations of $(Z/pZ)^*$

answered Oct 11, 2014 at 2:59

1 vote

Accepted

Under row operations and column permutations a matrix A can be put in the non-unique form ( I | X ), what is known about the set of possible X?

answered May 30 at 13:51

1 vote

Accepted

Exceptional Lenz-Barlotti classes IVa.3 and IVb.3

answered Jul 21 at 13:36

1 vote

Has this kind of design been studied before?

answered May 16, 2017 at 2:33

1 vote

Regular graphs with strongly regular edge colorings

answered Oct 2, 2014 at 2:53

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17 Answers

Unrigorous British mathematics prior to G.H. Hardy

Cardinality of the maximum points of the determinant on matrices with entries in [-1, 1]

Are these two methods for constructing Hadamard matrices known?

Isomorphism testing in STS(13)

Distribution of the powers of a primitive element of a finite field

Creating a Latin rectangle from a projective plane

What is the mathematician's definition of the determinant?

For which finite projective planes can the incidence structure be written as a circulant matrix?

A family of difference sets (paper by A. L. Whiteman)

A circulant coin weighing problem

Large Intersecting Subsets of a Set

A combinatorial optimization problem

Permutations of $(Z/pZ)^*$

Under row operations and column permutations a matrix A can be put in the non-unique form ( I | X ), what is known about the set of possible X?

Exceptional Lenz-Barlotti classes IVa.3 and IVb.3

Has this kind of design been studied before?

Regular graphs with strongly regular edge colorings