Operations Research Transactions ›› 2015, Vol. 19 ›› Issue (4): 97-106.doi: 10.15960/j.cnki.issn.1007-6093.2015.04.009

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A non-empty condition and an axiomatization  for the core of multi-choice NTU games

TIAN Haiyan1,*, ZHANG Gang2   

  1. 1.Department of Applied Mathematics, Northwestern Polytechnical University, Xi'an 710072, China; 2.College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050024, China
  • Received:2015-02-06 Online:2015-12-15 Published:2015-12-15

Abstract:

This paper introduces the concept of \pi-balanced multi-choice NTU games and proves that any \pi-balanced multi-choice NTU game has a non-empty core. The definitions of non-leveled multi-choice NTU games and reduced games are introduced and the concepts of consistency and converse consistency are also given. An axiomatization for the core of non-leveled multi-choice NTU games is provided by using individual rationality, one-person rationality, consistency and converse consistency.

Key words:  multi-choice NTU games, cores, \pi-balancedness, consistency