Recent progress in subset combinatorics of groups

Аннотация

We systematize and analyze some results obtained in the subset combinatorics of G groups presented in previous surveys [1–4]. The main topics: the dynamical and descriptive characterizations of subsets of a group relatively to their combinatorial size, Ramsey-product subsets in connection with some general concept of recurrence in G-spaces, new ideals in the Boolean algebra \( {\mathcal{P}}_G \) of all subsets of a group G and in the Stone– Čech compactification βG of G, and the combinatorial derivation.