List questions from groupoids

Published on 23 Feb 2026 - 13:45

39

Views

Does it make sense to examine properties of $(G,\circ)$ if we, in the meantime prove that $(G,\circ)$ is not a groupoid?

Published on 23 Sep 2017 - 18:02

112

Views

Inversion map of a Lie groupoid is a diffeomorphism

Published on 30 Sep 2017 - 21:43

383

Views

Fibration of Groupoids

Published on 17 Oct 2017 - 23:27

369

Views

Equivalence Between Covering Groupoids and Covering Spaces

Published on 05 Nov 2017 - 5:42

229

Views

What is the tangent Lie algebroid to a Lie groupoid?

Published on 17 Mar 2026 - 12:58

42

Views

Subsets of groups containing identity and inverses

Published on 06 Dec 2017 - 14:18

1.8k

Views

Purely combinatorial proof that$ (e^x)' = e^x$

Published on 28 Aug 2010 - 4:07

2.9k

Views

What structure does the alternating group preserve?

Published on 22 Sep 2010 - 1:41

1.3k

Views

Categorification of $\pi$?

Published on 22 Mar 2026 - 7:40

851

Views

What are the ramifications of the fact that the first homotopy group can be non-commutative, whilst the higher homotopy groups can't be?

Published on 04 Mar 2011 - 2:27

6.9k

Views

definition of a groupoid

Published on 25 Aug 2011 - 16:02

198

Views

Equivalence of certain comma categories

Published on 26 Aug 2011 - 23:04

146

Views

Definition of a groupoid of fractions

Published on 14 Nov 2011 - 16:48

386

Views

Topological Space as an $(\infty,0)$-category

Published on 12 Jan 2012 - 22:37

List Question

Does the existence of only right neutral mean that there can only exist right inverse?

Does it make sense to examine properties of $(G,\circ)$ if we, in the meantime prove that $(G,\circ)$ is not a groupoid?

Inversion map of a Lie groupoid is a diffeomorphism

Fibration of Groupoids

Equivalence Between Covering Groupoids and Covering Spaces

What is the tangent Lie algebroid to a Lie groupoid?

Subsets of groups containing identity and inverses

Purely combinatorial proof that$ (e^x)' = e^x$

What structure does the alternating group preserve?

Categorification of $\pi$?

What are the ramifications of the fact that the first homotopy group can be non-commutative, whilst the higher homotopy groups can't be?

definition of a groupoid

Equivalence of certain comma categories

Definition of a groupoid of fractions

Topological Space as an $(\infty,0)$-category

Trending Questions

Popular # Hahtags

Popular Questions