Infinite group

Algebraic structure → Group theory
Group theory

Basic notions

* Subgroup
* Normal subgroup

* Quotient group
* (Semi-)direct product

Group homomorphisms

* kernel
* image
* direct sum

* wreath product
* simple
* finite

* infinite
* continuous
* multiplicative

* additive
* cyclic
* abelian
* dihedral

* nilpotent
* solvable

* List of group theory topics

Finite groups

|  Classification of finite simple groups

* cyclic
* alternating
* Lie type
* sporadic

* Lagrange's theorem

* Sylow theorems
* Hall's theorem

* p-group
* Elementary abelian group

* Frobenius group

* Schur multiplier

* Symmetric group Sn

* Klein four-group V
* Dihedral group Dn
* Quaternion group Q
* Dicyclic group Dicn

* Discrete groups
* Lattices

* Integers (Z)
* Free group

Modular groups

* PSL(2,Z)
* SL(2,Z)

* Arithmetic group
* Lattice
* Hyperbolic group

Topological and Lie groups

* Solenoid
* Circle

* General linear GL(n)

* Special linear SL(n)

* Orthogonal O(n)

* Euclidean E(n)

* Special orthogonal SO(n)

* Unitary U(n)

* Special unitary SU(n)

* Symplectic Sp(n)

* G2
* F4
* E6
* E7
* E8

* Lorentz
* Poincaré
* Conformal

* Diffeomorphism
* Loop

Infinite dimensional Lie group

* O(∞)
* SU(∞)
* Sp(∞)

Algebraic groups

* Linear algebraic group

* Reductive group

* Abelian variety

* Elliptic curve

* v
* t
* e

In group theory, an area of mathematics, an infinite group is a group whose underlying set contains an infinite number of elements.

## Examples

* (Z, +), the group of integers with addition, and (R, +), the group of real numbers with addition
* Infinite Lie groups
* Infinite general linear groups

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