Mathematical group based upon a finite number of elements
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
action
Glossary of group theory
List of group theory topics
Finite groups
Cyclic group Zn
Symmetric group Sn
Alternating group An
Dihedral group Dn
Quaternion group Q
Cauchy's theorem
Lagrange's theorem
Sylow theorems
Hall's theorem
p-group
Elementary abelian group
Frobenius group
Schur multiplier
Classification of finite simple groups
cyclic
alternating
Lie type
sporadic
Discrete groups
Lattices
Integers ()
Free group
Modular groups
PSL(2, )
SL(2, )
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 abstract algebra, a finite group is a group whose underlying set is finite. Finite groups often arise when considering symmetry of mathematical or physical objects, when those objects admit just a finite number of structure-preserving transformations. Important examples of finite groups include cyclic groups and permutation groups.
The study of finite groups has been an integral part of group theory since it arose in the 19th century. One major area of study has been classification: the classification of finite simple groups (those with no nontrivial normal subgroup) was completed in 2004.
their non-abelian counterparts, and finite abelian groups are very well understood and fully classified. An abelian group is a set A {\displaystyle A} , together...
the finite Coxeter groups are precisely the finite Euclidean reflection groups; for example, the symmetry group of each regular polyhedron is a finite Coxeter...
combinatorial group theory. A presentation is said to be finitely generated if S is finite and finitely related if R is finite. If both are finite it is said...
classification of finite simple groups, there are a number of groups which do not fit into any infinite family. These are called the sporadic simple groups, or the...
classification of finite simple groups states that every finite simple group is cyclic, or alternating, or in one of 16 families of groups of Lie type, or...
profinite group is a topological group that is in a certain sense assembled from a system of finitegroups. The idea of using a profinite group is to provide...
mathematics, the classification of finite simple groups is a result of group theory stating that every finite simple group is either cyclic, or alternating...
1960 and 2004, that culminated in a complete classification of finite simple groups. Group theory has three main historical sources: number theory, the...
generator of the group. Every infinite cyclic group is isomorphic to the additive group of Z, the integers. Every finite cyclic group of order n is isomorphic...
a group is a subset of the group set such that every element of the group can be expressed as a combination (under the group operation) of finitely many...
permutation representations. Other than a few marked exceptions, only finitegroups will be considered in this article. We will also restrict ourselves...
In the mathematical field of group theory, a group G is residually finite or finitely approximable if for every element g that is not the identity in G...
In algebra, a finitely generated group is a group G that has some finite generating set S so that every element of G can be written as the combination...
mathematics, specifically in group theory, the phrase group of Lie type usually refers to finitegroups that are closely related to the group of rational points...
smaller groups, namely a nontrivial normal subgroup and the corresponding quotient group. This process can be repeated, and for finitegroups one eventually...
particular, finite p-groups are solvable, as all finite p-groups are nilpotent. In particular, the quaternion group is a solvable group given by the group extension...
several constructions. Finite direct products of group schemes have a canonical group scheme structure. Given an action of one group scheme on another by...
Fourier transform on finitegroups is a generalization of the discrete Fourier transform from cyclic to arbitrary finitegroups. The Fourier transform...
mathematics, finiteness properties of a group are a collection of properties that allow the use of various algebraic and topological tools, for example group cohomology...
group theory, a nilpotent group G is a group that has an upper central series that terminates with G. Equivalently, it has a central series of finite...
are: Finitegroups — Group representations are a very important tool in the study of finitegroups. They also arise in the applications of finitegroup theory...
abstract algebra, an abelian group ( G , + ) {\displaystyle (G,+)} is called finitely generated if there exist finitely many elements x 1 , … , x s {\displaystyle...
finite field or Galois field (so-named in honor of Évariste Galois) is a field that contains a finite number of elements. As with any field, a finite...