In mathematics, the Hilbert metric, also known as the Hilbert projective metric, is an explicitly defined distance function on a bounded convex subset...

mathematics, a Hilbert space is a real or complex inner product space that is also a complete metric space with respect to the metric induced by the inner...

metric for which the lines of the projective space are geodesics. Metrics of this type are called flat or projective. Thus, the solution of Hilbert's...

as the metric induced by the flat space Euclidean metric, after appropriate changes of variable. When extended to complex projective Hilbert space, it...

Baker, M.R.; Kiriushcheva, N.; Kuzmin, S. (2021). "Noether and Hilbert (metric) energy–momentum tensors are not, in general, equivalent". Nuclear...

infinite-dimensional Hilbert metric, a metric that makes a bounded convex subset of a Euclidean space into an unbounded metric space This disambiguation...

Hilbert's problems are 23 problems in mathematics published by German mathematician David Hilbert in 1900. They were all unsolved at the time, and several...

David Hilbert Foundations of geometry Hilbert C*-module Hilbert cube Hilbert curve Hilbert matrix Hilbert metric Hilbert–Mumford criterion Hilbert number...

Generalization of metric spaces Generalized metric space Hilbert's fourth problem – Construct all metric spaces where lines resemble those on a sphere Metric tree...

The Einstein–Hilbert action in general relativity is the action that yields the Einstein field equations through the stationary-action principle. With...

Hilbert cube as a metric space, indeed as a specific subset of a separable Hilbert space (that is, a Hilbert space with a countably infinite Hilbert basis)...

In Einstein's theory of general relativity, the Schwarzschild metric (also known as the Schwarzschild solution) is an exact solution to the Einstein field...

P_{+}-P_{-}} is called the (real phase) metric operator or fundamental symmetry, and may be used to define the Hilbert inner product ( ⋅ , ⋅ ) {\displaystyle...

called a semi-Riemannian manifold, is a differentiable manifold with a metric tensor that is everywhere nondegenerate. This is a generalization of a Riemannian...

group of a separable Hilbert space (with the strong operator topology) is a Polish group. The group of homeomorphisms of a compact metric space is a Polish...

Inner angle may refer to: internal angle of a polygon Fubini–Study metric on a Hilbert space This disambiguation page lists mathematics articles associated...

product of two Hilbert spaces is another Hilbert space. Roughly speaking, the tensor product is the metric space completion of the ordinary tensor product...

\mathbf {P} ^{n-1}} , which carries a Kähler metric, called the Fubini–Study metric, derived from the Hilbert space's norm. As such, the projectivization...

non-Euclidean geometry was given by A'Campo and Papadopoulos (2014). Hilbert metric Cayley (1859), p. 82, §§209–229 Klein (1871) Klein (1873) Klein (1893a)...

In mathematics, the Kadison–Kastler metric is a metric on the space of C*-algebras on a fixed Hilbert space. It is the Hausdorff distance between the...

T_{x}M} . If g {\displaystyle g} is a strong Riemannian metric, then M {\displaystyle M} must be a Hilbert manifold.[citation needed] If ( H , ⟨ ⋅ , ⋅ ⟩ ) {\displaystyle...

space, the result is a Hilbert space containing the original space as a dense subspace. Completeness is a property of the metric and not of the topology...

is separable. X is metrizable. Every separable metric space is homeomorphic to a subset of the Hilbert cube. This is established in the proof of the Urysohn...

The gap metric is a mathematical concept used to quantify the distance between linear operators on a Hilbert space. It was introduced independently by...

In mathematics, an inner product space (or, rarely, a Hausdorff pre-Hilbert space) is a real vector space or a complex vector space with an operation...

homeomorphic to some open subset of a given Banach space (metric Hilbert manifolds and metric Fréchet manifolds are defined similarly). For example, every...

homeomorphic to a metric space. That is, a topological space ( X , τ ) {\displaystyle (X,\tau )} is said to be metrizable if there is a metric d : X × X → [...

scheduling Hilbert field Hilbert function Hilbert manifold Hilbert matrix Hilbert metric Hilbert modular form Hilbert modular variety Hilbert–Mumford criterion...

The Friedmann–Lemaître–Robertson–Walker metric (FLRW; /ˈfriːdmən ləˈmɛtrə ... /) is a metric that describes a homogeneous, isotropic, expanding (or otherwise...

The Kerr metric or Kerr geometry describes the geometry of empty spacetime around a rotating uncharged axially symmetric black hole with a quasispherical...