Richard Bean

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20012026

most citedHow to predict and optimise with asymmetric error metrics

5 citations · 7 across the 4 of their papers we have counts for

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math.CO2026

A tight single-change covering design with block size 6

Richard Bean

We give a tight single-change covering design with $v = 26$ and $k = 6$ . This answers Problem 1 of the Nineteenth British Combinatorial Conference, which asked whether such a design ex…

math.CO2026

Critical Sets in Latin Squares and Associated Structures

Richard Winston Bean

A critical set in a Latin square of order $n$ is a set of entries in an $n \times n$ array which can be embedded in precisely one Latin square of order $n$ , with the property that i…

math.CO2001

A new bound on the size of the largest critical set in a Latin square

Richard Bean, E. S. Mahmoodian

A critical set in an n x n array is a set C of given entries, such that there exists a unique extension of C to an n x n Latin square and no proper subset of C has this property. T…