Commonly Knowing Whether

Jie Fan*, Davide Grossi, Barteld Kooi, Xingchi Su, Rineke Verbrugge

*Corresponding author for this work

Research output: Working paperAcademic

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This paper introduces `commonly knowing whether', a non-standard version of classical common knowledge which is defined on the basis of `knowing whether', instead of classical `knowing that'. After giving five possible definitions of this concept, we explore the logical relations among them both in the multi-agent case and in the single-agent case. We focus on one definition and treat it as a modal operator. It is found that the expressivity of this operator is incomparable with the classical common knowledge operator. Moreover, some special properties of it over binary-tree models and KD45-models are investigated.
Original languageEnglish
Publication statusSubmitted - 14-Jan-2020


  • cs.LO

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