Example 1

Tag 021V, permanent. Cite it as [Bourbaki, Tag 021V].

Topologie algébrique, chapter IV, § 3. Groupes de Poincaré des groupes topologiques

Let G be a topological group and $m$ its composition law. The identity element $e$ of G is an identity element up to homotopy and $(G, e)$ is a Hopf space.

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.

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