## curvature constantA constant ( k) appearing in the Robertson-Walker metric
which determines the curvature of the spatial
geometry of the universe. The three standard Friedmann
models have: k > 0 for positive curvature (spherical geometry), k
< 0 for negative curvature (hyperbolic geometry), and k = 0 for zero
curvature (flat geometry). ## Related entry• cosmological model## Related category• COSMOLOGY | |||||

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