I am working in the field of Game theory. I use the word Nash equilibrium intensively, but I always wonder about this word countability.
I think the word Nash equilibrium should be countable. Because for a given game, we can have more than one Nash equilibrium, but I've never seen anyone use words like Nash equilibriums or any other plural form.
So, if this word is countable, what is its plural form. If it is uncountable, how do we express the situation of multiple Nash equilibrium?