I posted a question about game theory concepts on the AI site, but it got closed as off-topic.
The question is within the context of reinforcement learning though, is it on-topic here?
Game theory is a part of mathematics more so than of statistics / machine learning / data analysis (which is the scope of this site). As such, basic questions on game theory are more on topic on math.SE (1361 Qs in [game-theory], 397 in [combinatorial-game-theory], 109 in [algorithmic-game-theory]) and research-level questions are more on-topic on mathoverflow (154 Qs in [game-theory] and 119 in [combinatorial-game-theory]).
In contrast, we only have a meagre 13 Qs in [game-theory] and the tag does not even have a wiki excerpt, suggesting that nobody really takes care of it.
Your question https://stats.stackexchange.com/q/230619 despite receiving three upvotes seems to be much more suited for math.SE. I have just voted to migrate it there.
Update. The post has been successfully migrated:
Post Migrated Away to math.stackexchange.com by amoeba, gung, John, Andy, kjetil b halvorsen