-
whose objects are
groupoids and
whose morphisms are
groupoid morphisms is
called the
groupoid category, or the
category of
groupoids, and is
denoted by...
-
globular groupoid giving a wide
class of
examples of
strict globular groupoids. Moreover,
because strict groupoids embed inside weak
groupoids, they can...
- In
abstract algebra, a magma, binar, or, rarely,
groupoid is a
basic kind of
algebraic structure. Specifically, a
magma consists of a set
equipped with...
-
commutative Hopf
algebroid of
functions on the
groupoid. Thus
formalisms trying to
capture quantum groupoids include certain classes of (autonomous) monoidal...
-
prominent author on the
subject of
groupoids in topology: http://
groupoids.org.uk/
fundamental groupoid at the nLab
fundamental infinity-
groupoid at the nLab...
-
groupoids are the
global counterparts of Lie algebroids. Lie
groupoids were
introduced by
Charles Ehresmann under the name
differentiable groupoids....
-
contravariant functor from C to the
category of
groupoids. This way, each
groupoid object determines a
prestack in
groupoids. This
prestack is not a
stack but it...
- Free
central groupoids are infinite, and have no
idempotent elements.
Finite central groupoids,
including the
natural central groupoids over
finite sets...
- homotopy: it is a unit
interval object in the
category of
groupoids. The
category of
groupoids admits all colimits, and in
particular all pushouts. Theorem...
- In mathematics, the
Mathieu groupoid M13 is a
groupoid acting on 13
points such that the
stabilizer of each
point is the
Mathieu group M12. It was introduced...
