Bourbaki

Corollary 1

Tag 0CB5, permanent. Cite it as [Bourbaki, Tag 0CB5].

General Topology, chapter X, § 1. The uniformity of $\mathscr{G}$-convergence

A subspace HH of FS(X;Y)\mathscr{F}_\mathscr{S}(X; Y) is complete if and only if, for each Cauchy filter Φ\Phi on HH, there exists u0∈Hu_0 \in H such that Φ\Phi converges pointwise to u0u_0 in B=⋃A∈SAB = \bigcup_{A \in \mathscr{S}} A.

This follows immediately from Proposition 5.

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

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Transcribed from the printed volume. Not translated.