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Round-robin tournaments with homogeneous rounds

Author

Listed:
  • Bregje Buiteveld
  • Erik Holland
  • Gerhard Post
  • Dirk Smit

Abstract

We study single and double round-robin tournaments for n teams, where in each round a fixed number (g) of teams is present and each team present plays a fixed number (m) of matches in this round. In a single, respectively double, round-robin tournament each pair of teams play one, respectively two, matches. In the latter case the two matches should be played in different rounds. We give necessary combinatorial conditions on the triples (n,g,m) for which such round-robin tournaments can exist, and discuss three general construction methods that concern the cases m=1, m=2 and m=g−1. For n≤20 these cases cover 149 of all 173 non-trivial cases that satisfy the necessary conditions. In 147 of these 149 cases a tournament can be constructed. For the remaining 24 cases the tournament does not exist in 2 cases, and is constructed in all other cases. Finally we consider the spreading of rounds for teams, and give some examples where well-spreading is either possible or impossible. Copyright Springer Science+Business Media, LLC 2014

Suggested Citation

  • Bregje Buiteveld & Erik Holland & Gerhard Post & Dirk Smit, 2014. "Round-robin tournaments with homogeneous rounds," Annals of Operations Research, Springer, vol. 218(1), pages 115-128, July.
    • Handle: RePEc:spr:annopr:v:218:y:2014:i:1:p:115-128:10.1007/s10479-011-0981-5
    DOI: 10.1007/s10479-011-0981-5
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