original_query: What is the Krull topology and how is it equipped to the profinite group?
query: What is the Krull topology and how is it equipped to the absolute Galois group of a finite field?
answer: The Krull topology is a topology on the absolute Galois group of a finite field, making it a profinite group.  The isomorphism between the absolute Galois group and a specific profinite group is an isomorphism of topological groups, implying compatibility between the group structure and the Krull topology.