Example 1

Tag 01LH, permanent. Cite it as [Bourbaki, Tag 01LH].

Topologie algébrique, chapter I, § 1. Produits fibrés et carrés cartésiens

When the set I is empty, the set $\prod_{i\in I}X_i$ consists of a single element and the B-space $\prod_BX_i$ is identified with B (endowed with the projection Id $_B$ ).

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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