A question of Paul Erdös and nilpotent-by-finite groups
A question of Paul Erdös and nilpotent-by-finite groups
Let n be a positive integer or infinity (denoted ∞), k a positive integer. We denote by Ω k ( n ) the class of groups G such that, for every subset X of G of cardinality n + 1, there exist distinct elements x , y ∈ X and …