Bourbaki

Exercise 4, § 4

Tag 040Q, permanent. Cite it as [Bourbaki, Tag 040Q].

Algebraic Topology, IV, p. 462

One says that a topological space is locally arcwise simply connected if every point possesses a basis of arcwise simply connected neighbourhoods.

(a) Give an example of a topological space which is arcwise simply connected but is not locally arcwise simply connected.

(b) Let X be a topological space and let G be a discrete group acting properly on X. If X is locally arcwise simply connected, analogously is X/GX/G.

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Machine translation of the English, by gpt-5-mini. Not checked by a person. That model is a cut down version of the one the rest of this language was written by.