topological game
Mathematical game on a topological space
Banach game
topological game in which, given a subset 𝑋 of reals, 2 players alternatingly write down a strictly decreasing sequence of positive real numbers 𝑥₀, 𝑥₁, …; Player 1 wins iff ∑ᵢ 𝑥ᵢ∈𝑋