null tetrad

См. также в других словарях:

• Tetrad formalism — The tetrad formalism is a transformed coordinate approach to General Relativity.In the tetrad formalism, a tetrad basis is chosen a set of four independent vector fields {e {(a)}^{mu}} {a=1dots4} that together span the 4D vector space at each… …   Wikipedia

• Newman-Penrose formalism — The Newman Penrose Formalism is a set of notation developed by Ezra T. Newman and Roger Penrose [cite journal | author= Ezra T. Newman and Roger Penrose | title=An Approach to Gravitational Radiation by a Method of Spin Coefficients |… …   Wikipedia

• Newman–Penrose formalism — The Newman Penrose Formalism is a set of notation developed by Ezra T. Newman and Roger Penrose[1] for General Relativity. Their notation is an effort to treat General Relativity in terms of spinor notation, which introduces complex forms of the… …   Wikipedia

• Minkowski space — A diagram of Minkowski space, showing only two of the three spacelike dimensions. For spacetime graphics, see Minkowski diagram. In physics and mathematics, Minkowski space or Minkowski spacetime (named after the mathematician Hermann Minkowski)… …   Wikipedia

• Weyl scalar — In General Relativity, the Weyl scalars are a set of five complex scalar quantities, :Psi 0, ldots, Psi 4, describing the curvature of a four dimensional spacetime. They are the expression of the ten independent degrees of freedom of the Weyl… …   Wikipedia

• Pantur Silaban — Infobox Scientist name = Pantur Silaban caption = photograph circa 1970 birth date = Birth date|1937|11|11|df=yes birth place = Sidikalang, Dairi Indonesia death date = death place = residence = Sumatera (Sidikalang) Syracuse (USA) Bandung… …   Wikipedia

• Pp-wave spacetime — In general relativity, the pp wave spacetimes, or pp waves for short, are an important family of exact solutions of Einstein s field equation. These solutions model radiation moving at the speed of light. This radiation may consist of:*… …   Wikipedia

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• Frame fields in general relativity — In general relativity, a frame field (also called a tetrad or vierbein) is a set of four orthonormal vector fields, one timelike and three spacelike, defined on a Lorentzian manifold that is physically interpreted as a model of spacetime. The… …   Wikipedia

• Lorentz group — Group theory Group theory …   Wikipedia