List questions from groupoids

Published on 24 Mar 2026 - 10:58

155

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Why are categories not called monoids (and why are monoids not called... mons?)

Published on 18 Jul 2019 - 1:58

46

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Is the 2-Category of Groupoids Locally Presentable?

Published on 19 Mar 2026 - 16:14

139

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Exemples of applications of "groupoidification" to linear algebra

Published on 23 Feb 2026 - 6:39

362

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From groups to groupoids.

Published on 02 Apr 2014 - 16:08

187

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Which constructions on a category are still interesting for a groupoid?

Published on 16 Apr 2014 - 8:42

82

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Relationship between groupoid morphisms and the induced functor on their categories of actions?

Published on 22 Apr 2014 - 20:19

532

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Is there a "natural" / "categorical" definition of the "parity" of a permutation?

Published on 23 Apr 2014 - 8:33

37

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A certain product of C*-algebras

Published on 25 Apr 2014 - 12:06

241

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Groupoid $C^*$ algebra of product groupoid

Published on 29 May 2014 - 11:35

664

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How do you construct the lifted topology of a groupoid cover?

Published on 08 Jun 2014 - 16:56

244

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Proving closure of unit space of a Hausdorff groupoid

Published on 30 Jun 2014 - 13:33

251

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Constructing the classifying space for a groupoid G

Published on 10 Jul 2014 - 15:20

210

Views

Conjugation in a groupoid

Published on 01 Aug 2014 - 10:56

365

Views

Can the integral group ring construction be extended to groupoids in such a way that it provides a functor from Groupoids to Rings?

Published on 05 Sep 2014 - 7:13

List Question

What's the correct notion of equivalence in a double category?

Why are categories not called monoids (and why are monoids not called... mons?)

Is the 2-Category of Groupoids Locally Presentable?

Exemples of applications of "groupoidification" to linear algebra

From groups to groupoids.

Which constructions on a category are still interesting for a groupoid?

Relationship between groupoid morphisms and the induced functor on their categories of actions?

Is there a "natural" / "categorical" definition of the "parity" of a permutation?

A certain product of C*-algebras

Groupoid $C^*$ algebra of product groupoid

How do you construct the lifted topology of a groupoid cover?

Proving closure of unit space of a Hausdorff groupoid

Constructing the classifying space for a groupoid G

Conjugation in a groupoid

Can the integral group ring construction be extended to groupoids in such a way that it provides a functor from Groupoids to Rings?

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