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15
Math.TechQA.Club
2026-04-12 15:15:02
56
Views
Representations of groupoid algebras
Published on
12 Apr 2026 - 15:15
#functional-analysis
#representation-theory
#operator-algebras
#noncommutative-geometry
#groupoids
126
Views
Easily visualizable examples of Lie groupoids?
Published on
16 Apr 2026 - 19:58
#lie-groups
#smooth-manifolds
#groupoids
97
Views
Is the category of groupoids a Lawvere thory?
Published on
17 Apr 2026 - 18:45
#category-theory
#groupoids
37
Views
Why do we have $s.\chi_x=\chi_x$ implies that $s(x)=x u$ for some $u \in \mathfrak{C}^{*, 0}$ in an inverse semigroup?
Published on
25 Mar 2026 - 4:41
#category-theory
#operator-algebras
#semigroups
#groupoids
#inverse-semigroups
54
Views
Every Category with a Zero Object contains a Connected Groupoid.
Published on
25 Mar 2026 - 4:36
#category-theory
#groupoids
44
Views
geometric meaning of viewing $G$-cover of $X$ as a functor $\Pi_1(X) \to BG$
Published on
25 Mar 2026 - 4:43
#algebraic-topology
#covering-spaces
#groupoids
75
Views
Categories fibered in groupoids and the slice category
Published on
29 Apr 2026 - 12:43
#category-theory
#groupoids
#algebraic-stacks
#slice-category
18
Views
Proving isotropy of a groupoid multiplication graph in a quasi-presymplectic groupoid
Published on
25 Mar 2026 - 3:03
#differential-geometry
#differential-forms
#symplectic-geometry
#groupoids
28
Views
Proof of Square Zero Property for the Total Differential in the de Rham Double Complex of a Lie Groupoid
Published on
25 Mar 2026 - 4:43
#differential-geometry
#homology-cohomology
#symplectic-geometry
#groupoids
56
Views
When is projection from a group-scheme-action étale?
Published on
25 Mar 2026 - 3:07
#algebraic-geometry
#schemes
#groupoids
232
Views
Conjugation Functor from a Groupoid to $\mathbf{Grp}$
Published on
25 Mar 2026 - 4:36
#group-theory
#category-theory
#higher-category-theory
#groupoids
#natural-transformations
87
Views
is the orbit space of a proper (but non-open) topological groupoid always Hausdorff?
Published on
09 Apr 2026 - 8:09
#general-topology
#groupoids
#orbifolds
90
Views
Why is it worth studying groupoids if they are so similar to groups?
Published on
25 Mar 2026 - 3:07
#abstract-algebra
#group-theory
#group-actions
#groupoids
72
Views
Name of a groupoid
Published on
30 Apr 2026 - 8:35
#reference-request
#category-theory
#terminology
#groupoids
51
Views
A name for morphisms with the same source object
Published on
25 Mar 2026 - 2:57
#reference-request
#category-theory
#terminology
#groupoids
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