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Timeline for Internal principal $G$-bundles

Current License: CC BY-SA 4.0

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Sep 10, 2021 at 18:41 vote accept Dat Minh Ha
Sep 10, 2021 at 13:02 comment added Marc Hoyois I mean that there is a $G$-equivariant isomorphism $P\times_XP\simeq G\times P$ over $P$. This is a local trivialisation of your bundle, since $P\to X$ is a covering.
Sep 8, 2021 at 19:53 comment added Dat Minh Ha @MarcHoyois Could you be a bit more specific ? What do you mean by "pulling $P \to X$ back along $P \to X$" ?
Sep 8, 2021 at 18:48 history edited Dat Minh Ha CC BY-SA 4.0
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Sep 8, 2021 at 18:46 comment added Marc Hoyois The bundle $P\to X$ becomes trivial after pulling back along the effective epimorphism $P\to X$, since $P\to X\to BG$ factors through the base point.
Sep 8, 2021 at 18:35 answer added Dmitri Pavlov timeline score: 5
Sep 8, 2021 at 17:11 history asked Dat Minh Ha CC BY-SA 4.0