Enumerative combinatorics
International Journal of Game Theory
The Shapley-Shubik power index for games with several levels of approval in the input and output
Decision Support Systems - Special issue: Decision theory and game theory in agent design
Biprobabilistic values for bicooperative games
Discrete Applied Mathematics
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In this paper we analyze ternary bicooperative games, which are a refinement of the concept of a ternary voting game introduced by Felsenthal and Machover. Furthermore, majority voting rules based on the difference of votes are simple bicooperative games. First, we define the concepts of the defender and detractor swings for a player. Next, we introduce the Banzhaf power index and the normalized Banzhaf power index. The main result of the paper is an axiomatization of the Banzhaf power index for the class of ternary bicooperative games. Moreover, we study ternary bicooperative games with two lists of weights and compute the Banzhaf power index using generating functions.