- group, ∞-group
- group object, group object in an (∞,1)-category
- abelian group, spectrum
- super abelian group
- group action, ∞-action
- representation, ∞-representation
- progroup
- homogeneous space

**Classical groups**

**Finite groups**

**Group schemes**

**Topological groups**

**Lie groups**

**Super-Lie groups**

**Higher groups**

**Cohomology and Extensions**

**Related concepts**

The *projective general linear group* $PGL(n)$ (in some dimension $n$ and over some coefficients) is the quotient of the general linear group $GL(n)$ by its center.

- $PGL(2)$ has a canonical action on the upper half plane and as such is equivalent to the modular group of Möbius transformations

- Wikipedia,
*Projective linear group*

Last revised on March 27, 2018 at 06:07:08. See the history of this page for a list of all contributions to it.