**hyperspherical** — Math.: see hyper 3 … Useful english dictionary

**hypersphere** — hyperspherical /huy peuhr sfer i keuhl/, adj. /huy peuhr sfear , huy peuhr sfear /, n. Math. the generalization of a sphere to more than three dimensions. [1965 70; HYPER + SPHERE] * * * … Universalium

**Elliptic geometry** — (sometimes known as Riemannian geometry) is a non Euclidean geometry, in which, given a line L and a point p outside L, there exists no line parallel to L passing through p.Elliptic geometry, like hyperbolic geometry, violates Euclid s parallel… … Wikipedia

**3-sphere** — Stereographic projection of the hypersphere s parallels (red), meridians (blue) and hypermeridians (green). Because this projection is conformal, the curves intersect each other orthogonally (in the yellow points) as in 4D. All curves are circles … Wikipedia

**n-sphere** — 2 sphere wireframe as an orthogonal projection Just as a … Wikipedia

**Friedmann–Lemaître–Robertson–Walker metric** — FRW redirects here. For other uses, see FRW (disambiguation). Physical cosmology … Wikipedia

**Friedmann equations** — Physical cosmology Universe · Big Bang … Wikipedia

**John Scales Avery** — John Scales Avery, born in 1933 in Lebanon to American parents, is a theoretical chemist noted for his research publications in evolution, thermodynamics, and quantum chemistry. Since the early 1990s, Avery has been an active World peace activist … Wikipedia

**Spherical coordinate system** — In mathematics, the spherical coordinate system is a coordinate system for representing geometric figures in three dimensions using three coordinates: the radial distance of a point from a fixed origin, the zenith angle from the positive z axis… … Wikipedia

**N-sphere** — can project a sphere s surface to a plane, it can also project a 3 sphere s surface into 3 space. This image shows three coordinate directions projected to 3 space:parallels (red), meridians (blue) and hypermeridians (green).Due to the conformal… … Wikipedia