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A number of papers have shown that a strict Nash equilibrium action pro ̄le of a game may never be played if there is a small amount of incomplete information (see, for example, Carlsson and van… (More)

- Atsushi Kajii
- 1995

An incomplete information game is defined by a probability distribution + over a type space and payoff functions u. Probability distribution +$ is strategically close to + if, for any bounded payoff… (More)

- Atsushi Kajii
- 2004

We present a model of incomplete information games with sets of priors. Upon arrival of private information, each player “updates” by the Bayes rule each of priors in this set to construct the set of… (More)

- Simon Grant, Atsushi Kajii
- 1998

Suppose agents value information not only to make contingent plans but also intrinsically. How are such attitudes toward information related to attitudes toward risk? We generalize the Kreps Porteus… (More)

- Simon Grant, Atsushi Kajii
- 2006

We provide an axiomatization of generalized utilitarian social welfare functions in the context of Harsanyis impartial observer theorem. To do this, we reformulate Harsanyis problem such that… (More)

- Albert Burgos, Simon Grant, Atsushi Kajii
- Games and Economic Behavior
- 2002

We study a multiperson bargaining problem with general risk preferences through the use of Shaked’s game of cycling offers with exogenous breakdown. If preferences are “smooth,” then as the risk of… (More)

- Simon Grant, Atsushi Kajii, Ben Polak, Zvi Safra
- J. Economic Theory
- 2012

We provide an axiomatization of expected equally-distributed equivalent-utility social welfare functions in the context of Harsanyi’s impartial observer theorem. For this family of social welfare… (More)

- Atsushi Kajii
- 2003

Without the Independence Axiom, a weaker substitution axiom, “ADI,” is necessary for the preferences over money lotteries induced by the money metric utility function to be well behaved. Given ADI,… (More)

- Atsushi Kajii, Takashi Ui
- J. Economic Theory
- 2006

This paper considers a two agent model of trade with multiple priors. First, we characterize the existence of an agreeable bet on some event in terms of the set of priors. It is then shown that the… (More)

- Simon Grant, Atsushi Kajii
- 1998

In this paper we provide an axiomatization for a representation of preferences over lotteries that is only one parameter richer than expected utility. Our model is a special case of Rank-Dependent… (More)