General relativity

Black hole conjecture

In physics, specifically for special relativity and general relativity, a four-tensor is an abbreviation for a tensor in a four-dimensional spacetime.

topological structure of 4D spacetime

1919 observational test which confirmed Einstein's theory of general relativity

hypothesis

theory of gravity with two metric tensors

philosophical argument against general covariance

an equation in the Hamiltonian formulation of geometrodynamics

Lorentzian metric describing an isotropic, expanding, nonhomogenous universe

Superspace is the coordinate space of a theory exhibiting supersymmetry. In such a formulation, along with ordinary space dimensions x, y, z, ..., there are also "anticommuting" dimensions whose coordinates are labeled in Grassmann numbers rather than real numbers. The ordinary space dimensions correspond to bosonic degrees of freedom, the anticommuting dimensions to fermionic degrees of freedom.

term in general relativity

particular set of coordinates for the Schwarzschild metric

kinds of scientific mental experiments done by Einstein

angular momentum in special and general relativity

Metric in relativity

facet of general relativity