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In mathematics, a trivial group or zero group is a group consisting of a single element. All such groups are isomorphic, so one often speaks of the trivial group. The single element of the trivial group is the identity element and so it is usually denoted as such: or depending on the context. If the group operation is denoted then it is defined by
The similarly defined trivial monoid is also a group since its only element is its own inverse, and is hence the same as the trivial group.
The trivial group is distinct from the empty set, which has no elements, hence lacks an identity element, and so cannot be a group.
a trivialgroup or zero group is a group consisting of a single element. All such groups are isomorphic, so one often speaks of the trivialgroup. The...
automorphism group is trivial. For n = 3 the automorphism group is Z2, with trivial inner automorphism group and outer automorphism group Z2. The outer...
specifically in group theory, a group is said to be perfect if it equals its own commutator subgroup, or equivalently, if the group has no non-trivial abelian...
{\displaystyle 2} with quotient group isomorphic to the Klein four-group. A trivial extension is an extension 1 → K → G → H → 1 {\displaystyle 1\to K\to...
using extensions. Equivalently, a solvable group is a group whose derived series terminates in the trivial subgroup. Historically, the word "solvable"...
of the Galois groups of the f i . {\displaystyle f_{i}.} Gal ( F / F ) {\displaystyle \operatorname {Gal} (F/F)} is the trivialgroup that has a single...
Trivial Pursuit is a board game in which winning is determined by a player's ability to answer trivia and popular culture questions. Players move their...
other hand, if a permutation group preserves only trivial partitions, it is transitive, except in the case of the trivialgroup acting on a 2-element set...
Trivial extension may refer to the following types of extensions: A trivial field extension A trivialgroup extension A trivial algebra extension This...
theory, a trivial representation is a representation (V, φ) of a group G on which all elements of G act as the identity mapping of V. A trivial representation...
general linear group of V and Z(V) is the subgroup of all nonzero scalar transformations of V; these are quotiented out because they act trivially on the projective...
interesting classes of semigroups that do not contain any groups except the trivialgroup; examples of the latter kind are bands and their commutative...
∗ to H × H is a group operation on H. This is often denoted H ≤ G, read as "H is a subgroup of G". The trivial subgroup of any group is the subgroup {e}...
alternating group A5 is the binary icosahedral group. The trivialgroup arises in numerous ways. The trivialgroup is often omitted from the beginning of a...
mathematics, a simple group is a nontrivial group whose only normal subgroups are the trivialgroup and the group itself. A group that is not simple can...
The simplest case, SU(1), is the trivialgroup, having only a single element. The group SU(2) is isomorphic to the group of quaternions of norm 1, and is...
maps all of Si to a single point of Sn. Therefore the homotopy group is the trivialgroup. When i = n, every map from Sn to itself has a degree that measures...
Schur multiplier: Trivial for n ≥ 1 and for the Tits group. Outer automorphism group: 1⋅f⋅1, where f = 2n + 1. Order 2 for the Tits group. Remarks: Unlike...
finite groups, or just the sporadic groups. A simple group is a group G that does not have any normal subgroups except for the trivialgroup and G itself...
trivialgroup. Every finitely generated abelian group or nilpotent group is polycyclic. Cycle graph (group) Cyclic module Cyclic sieving Prüfer group...
for any groups G, H, and K. The trivialgroup is the identity element of the direct product, up to isomorphism. If E denotes the trivialgroup, G ≅ G ×...
generators or group generators. If S {\displaystyle S} is the empty set, then ⟨ S ⟩ {\displaystyle \langle S\rangle } is the trivialgroup { e } {\displaystyle...
group Co1. The Schur multiplier and the outer automorphism group of the monster are both trivial. The minimal degree of a faithful complex representation...
its arbitrarily fine detail. The isometry groups in one dimension are: the trivial cyclic group C1 the groups of two elements generated by a reflection;...
their inverses (disregarding trivial variations such as st = suu−1t). A related but different notion is a free abelian group; both notions are particular...