fully invariant subgroup
11Symmetry — For other uses, see Symmetry (disambiguation) …
12Mass in general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …
13Translational symmetry — In geometry, a translation slides an object by a vector a: Ta(p) = p + a.In physics and mathematics, continuous translational symmetry is the invariance of a system of equations under any translation. Discrete translational symmetry is invariance …
14Lattice (group) — A lattice in the Euclidean plane. In mathematics, especially in geometry and group theory, a lattice in Rn is a discrete subgroup of Rn which spans the real vector space Rn. Every lattice in Rn …
15algebra — /al jeuh breuh/, n. 1. the branch of mathematics that deals with general statements of relations, utilizing letters and other symbols to represent specific sets of numbers, values, vectors, etc., in the description of such relations. 2. any of… …
16Rotation matrix — In linear algebra, a rotation matrix is a matrix that is used to perform a rotation in Euclidean space. For example the matrix rotates points in the xy Cartesian plane counterclockwise through an angle θ about the origin of the Cartesian… …
17Modular representation theory — is a branch of mathematics, and that part of representation theory that studies linear representations of finite group G over a field K of positive characteristic. As well as having applications to group theory, modular representations arise… …
18Austronesian languages — formerly Malayo Polynesian languages Family of about 1,200 languages spoken by more than 200 million people in Indonesia, the Philippines, Madagascar, the central and southern Pacific island groups (except most of New Guinea; see Papuan… …
19Laplace–Runge–Lenz vector — Throughout this article, vectors and their magnitudes are indicated by boldface and italic type, respectively; for example, left| mathbf{A} ight| = A. In classical mechanics, the Laplace–Runge–Lenz vector (or simply the LRL vector) is a vector… …
20Creole language — A creole language, or simply a creole, is a stable natural language developed from the mixing of parent languages; creoles differ from pidgins (which are believed by scholars to be necessary precedents of creoles) in that they have been nativized …
