Complete balanced Howell rotations for 8k+5 teams

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Abstract

Complete balanced Howell rotations are mathematical designs for highly structured paired-comparison experiments. They have been widely used in bridge tournaments, and many special cases are applicable to round-robin tournaments for all kinds of sports. In this paper we construct complete balanced Howell rotations of 8k + 5 teams, for 8k + 5 a prime power greater than 5. We also show that “table balanced” complete balanced Howell rotations for 8k + 5 teams do not exist unless 8k + 5 is the sum of two squares of integers.

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