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Originally Posted by AntonioLao The spacetime structure of the universe is very nearly Euclidean, and not Riemannian (closed - elliptic), nor Gaussian (open - hyperbolic). |
What is meant by hyperbolic? and how is math used to calculate it?
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Originally Posted by AntonioLao Euclidean spacetime allows the metric components of nonzero values for equal values of index. g11, g22, g33, g44, g55, g66, g77, g88, g99,...And the 2D analoque is the Pythagorean theorem for determining distances. |
How is the pythagorean therem used to detemrine distances?
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Originally Posted by AntonioLao Note: the flatness problem has been resolved by the inflationary model of the universe. |
How has it been solved?