Remark
Tag 01NR, permanent. Cite it as [Bourbaki, Tag 01NR].
Topologie algébrique, chapter I, § 2. Applications étales
From the foregoing, if the topology of B admits a countable basis, the same is true of that of E and the fibres of E are countable (cf. TG, I, p. 88, Poincaré-Volterra theorem).
Bourbaki sets the proof directly after the statement, and the corpus does not separate them, so what is above is the statement and its proof together.
Cited by
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Cites
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