Cosmic expansion is a key feature of Big Bang cosmology. It can be modeled mathematically with the Friedmann–Lemaître–Robertson–Walker metric (FLRW), where it corresponds to an …

This expansion, usually referred to as the "metric expansion" of space, is a “broad-brush effect” in that individual galaxies themselves are not expanding, but the clusters of galaxies into which …

Metric spaces are a general setting for studying many of the concepts of mathematical analysis and geometry. The most familiar example of a metric space is 3-dimensional Euclidean space …

The metric expansion of space is a key part of science's current understanding of the universe, whereby spacetime itself is described by a metric which changes over time in such a way that …

The Friedmann equations are a set of dynamical equations describing the expansion of the universe based on its matter content. The Friedmann equations provide a model for describing …

Albert Einstein (1879-1955) predicted a general expansion of the universe from his General Theory of Relativity. In fact, expansion or collapse (deflation) seemed an almost inevitable …

Aug 28, 2018 · If you want to express the Taylor series of g g in terms of partial derivatives of g g, it's just as neat and simple as the scalar case. The problem arises when you try to express it in …

Mar 21, 2025 · The Robertson-Walker metric and the expansion of the universe (as revealed by the galactic redshifts) were the twin foundations on which much of 20th-century cosmology …

The metric expansion of space is the increase of the distance between two distant parts of the universe with time. It is an intrinsic expansion whereby the scale of space itself changes.

Apr 10, 2021 · Metric expansion is a key feature of Big Bang cosmology, is modeled mathematically with the Friedmann–Lemaître–Robertson–Walker metric and is a generic …