common knowledge
in a mathematical game, a statement that players know and also know that other players know (ad infinitum)
en-GB/ˈkɒmən ˈnɒlɪd͡ʒ/
en-US/ˈkɑmən ˈnɑləd͡ʒ/
in a mathematical game, a statement that players know and also know that other players know (ad infinitum)