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A topological space (X, T) was defined in Problem 1.12 as a set X equipped with a topology T. We drop the “T” from the notation (X, T) and write simply X for a topological space when the topology is implicit. A topology T on a set X is a collection of subsets of X satisfying the following axioms:

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Borel Measure

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  • 发表日期：

    2026年

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  • Carlos S. Kubrusly

摘要

A topological space (X, T) was defined in Problem 1.12 as a set X equipped with a topology T. We drop the “T” from the notation (X, T) and write simply X for a topological space when the topology is implicit. A topology T on a set X is a collection of subsets of X satisfying the following axioms: