Bourbaki

Corollary 2

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

Topologie algébrique, chapter II, § 3. Groupoïdes

The canonical morphism from G into ϖG\varpi_G is injective.

This results immediately from Corollary 1.

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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Machine translation of the English, by gpt-5.4, against glossary version 34. Not checked by a person.