Remark 3

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

Topologie algébrique, chapter II, § 5. Coégalisateur

The mapping Fl( $\gamma$ ) of Fl(G) into Fl(Coeg( $\varphi , \psi$ )) is not in general surjective.

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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Cites

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