diagonal subgroup

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• Diagonal subgroup — In group theory, a field of mathematics, given a group G, then the diagonal subgroup of the n fold direct product Gn is the subgroup This subgroup is isomorphic to G. References …   Wikipedia

• Subgroup — This article is about the mathematical concept For the galaxy related concept, see Galaxy subgroup. Concepts in group theory category of groups subgroups, normal subgroups group homomorphisms, kernel, image, quotient direct product, direct sum …   Wikipedia

• Congruence subgroup — In mathematics, a congruence subgroup of a matrix group with integer entries is a subgroup defined by congruence conditions on the entries. A very simple example would be invertible 2x2 integer matrices of determinant 1, such that the off… …   Wikipedia

• List of mathematics articles (D) — NOTOC D D distribution D module D D Agostino s K squared test D Alembert Euler condition D Alembert operator D Alembert s formula D Alembert s paradox D Alembert s principle Dagger category Dagger compact category Dagger symmetric monoidal… …   Wikipedia

• Gelfand pair — In mathematics, the expression Gelfand pair refers to a pair ( G ,  K ) consisting of a group G and a subgroup K that satisfies a certain property on restricted representations.When G is a finite group the simplest definition is, roughly speaking …   Wikipedia

• Direct product of groups — Concepts in group theory category of groups subgroups, normal subgroups group homomorphisms, kernel, image, quotient direct product, direct sum semidirect product, wreath product …   Wikipedia

• Symmetric space — In differential geometry, representation theory and harmonic analysis, a symmetric space is a smooth manifold whose group of symmetries contains an inversion symmetry about every point. There are two ways to make this precise. In Riemannian… …   Wikipedia

• Von Neumann algebra — In mathematics, a von Neumann algebra or W* algebra is a * algebra of bounded operators on a Hilbert space that is closed in the weak operator topology and contains the identity operator. They were originally introduced by John von Neumann,… …   Wikipedia

• W' boson — In particle physics, a W ′ boson (or W prime boson) refers to a hypothetical new electrically charged gauge boson that couples to Standard Model fermions via their isospin. It is named in analogy to the Standard Model W boson.Infobox Particle… …   Wikipedia

• Skyrmion — In theoretical physics, a skyrmion, conceived by Tony Skyrme, is a mathematical model used to model baryons (a subatomic particle).A skyrmion is a homotopically non trivial classical solution of a nonlinear sigma model with a non trivial target… …   Wikipedia

• Nambu-Jona-Lasinio model — In quantum field theory, the Nambu Jona Lasinio model (named for its developers Yoichiro Nambu and Giovanni Jona Lasinio) is a theory of interacting Dirac fermions with chiral symmetry. It is an example of a four fermion interaction. This model… …   Wikipedia