Plain english, please.
2006-08-01 12:27:41 · 2 answers · asked by Ejsenstejn 2 in Science & Mathematics ➔ Mathematics
De Sitter space is a curved spacetime which has been used as a model for the Big Bang.
2006-08-01 12:31:45 · answer #1 · answered by mathematician 7 · 1⤊ 0⤋
In mathematics and physics, n-dimensional de Sitter space, denoted dSn, is the maximally symmetric, simply-connected, Lorentzian manifold with constant positive curvature. It may be regarded as the Lorentzian analog of an n-sphere (with its canonical Riemannian metric).
In the language of general relativity, de Sitter space is the maximally symmetric, vacuum solution of Einstein's field equation with a positive cosmological constant Î. When n = 4, it is also a cosmological model for the physical universe; see de Sitter universe.
De Sitter space is named for Willem de Sitter.
2006-08-01 19:32:13 · answer #2 · answered by p_rutherford2003 5 · 0⤊ 0⤋