Article | REF: AF97 V1

Topological Spaces I. Basic Notions

Author: Jean-Charles PINOLI

Publication date: July 10, 2018, Review date: May 7, 2021

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3. Topological spaces

In mathematics, a space is a set E equipped with an additional structure (p. 7 of ); for example, an algebraic or topological structure. An element of E is then called a point (point) of the space.

3.1 Topological spaces

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3.1.1 Open definition

Definition (topological space, axioms for open sets). A topological...

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