Appert topology

In general topology, a branch of mathematics, the Appert topology, named for Antoine Appert , is a topology on the set X = Z+ = {1, 2, 3, …} of positive integers.In the Appert topology, the open sets are those that do not contain 1, and those that asymptotically contain almost every positive integer. The space X with the Appert topology is called the Appert space.

Appert topology

In general topology, a branch of mathematics, the Appert topology, named for Antoine Appert , is a topology on the set X = Z+ = {1, 2, 3, …} of positive integers.In the Appert topology, the open sets are those that do not contain 1, and those that asymptotically contain almost every positive integer. The space X with the Appert topology is called the Appert space.