Talk:Lie groupoid

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Assessment comment[edit]

The comment(s) below were originally left at Talk:Lie groupoid/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

Hi, here are two points which could be improved: the composition in the exemple of the groupoid associated to a principal bundle is not clear. There is no definition of a Morita morphism, but rather an example. best, Ilroth (talk) 08:21, 28 August 2009 (UTC)[reply]

Last edited at 08:21, 28 August 2009 (UTC). Substituted at 02:17, 5 May 2016 (UTC)

Examples Needed[edit]

This page should have explicit examples of Lie groupoids. Some examples should include

  • Lie Groupoids from the Analytification of smooth groupoid schemes over
  • Actions of and discrete subgroups on
  • Quotient stacks from affine actions e.g. acting on by
  • Lie groupoids from homogeneous spaces — Preceding unsigned comment added by 50.246.213.170 (talk) 00:46, 5 August 2017 (UTC)[reply]
  • Another interesting example is the morphism of Lie-Groupoids induced by an action on a fiber bundle. — Preceding unsigned comment added by 128.138.65.181 (talk) 01:07, 20 August 2017 (UTC)[reply]

Further details needed[edit]

Some of the examples are incomplete, as they do not explain how the Lie Groupoid is actually obtained; most notably, it is not explained how a foliation gives a Lie Groupoid. --AlephMal (talk) 16:12, 10 January 2020 (UTC)[reply]