Linked from

The 7 pages that link to Basis (topology), each with the reason it gives.

• Topological spaceBroader topic: A basis can specify the same topology with a smaller collection of sets.

• General topologyBroader topic: Bases let a topology be specified through a smaller, manageable collection.

• Zero-dimensional spaceBroader topic: Zero-dimensionality requires such a basis to consist entirely of clopen sets.