invariant subalgebra
1Invariant theory — is a branch of abstract algebra that studies actions of groups on algebraic varieties from the point of view of their effect on functions. Classically, the theory dealt with the question of explicit description of polynomial functions that do not …
2Invariant subspace — In mathematics, an invariant subspace of a linear mapping : T : V rarr; V from some vector space V to itself is a subspace W of V such that T ( W ) is contained in W . An invariant subspace of T is also said to be T invariant.If W is T invariant …
3Ergodicity — For other uses, see Ergodic (disambiguation). In mathematics, the term ergodic is used to describe a dynamical system which, broadly speaking, has the same behavior averaged over time as averaged over space. In physics the term is used to imply… …
4Superselection sector — A superselection sector is a concept used in quantum mechanics when a representation of a * algebra is decomposed into irreducible components. It formalizes the idea that not all self adjoint operators are observables because the relative phase… …
5analysis — Synonyms and related words: Baconian method, Boolean algebra, Euclidean geometry, Fourier analysis, Lagrangian function, a fortiori reasoning, a posteriori reasoning, a priori reasoning, abstraction, accounting, airing, algebra, algebraic… …
6arithmetic — Synonyms and related words: Boolean algebra, Euclidean geometry, Fourier analysis, Lagrangian function, algebra, algebraic geometry, analysis, analytic geometry, associative algebra, binary arithmetic, calculation, calculus, ciphering, circle… …
7mathematics — Synonyms and related words: Boolean algebra, Euclidean geometry, Fourier analysis, Lagrangian function, algebra, algebraic geometry, algorism, algorithm, analysis, analytic geometry, applied mathematics, arithmetic, associative algebra, binary… …
8trigonometry — Synonyms and related words: Boolean algebra, Euclidean geometry, Fourier analysis, Lagrangian function, algebra, algebraic geometry, analysis, analytic geometry, arithmetic, associative algebra, binary arithmetic, calculus, circle geometry,… …
9Dynkin diagram — See also: Coxeter–Dynkin diagram Finite Dynkin diagrams Affine (extended) Dynkin diagrams …
10Lorentz group — Group theory Group theory …
