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Exact solutions in general relativity

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Exact Field Equations Solution, colliding em and gravity plane waves

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Navier Stokes Limitations

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Do the equations of general relativity reliably describe the dynamics of the universe?

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What are nonphysical solutions of chaotic systems?

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Wormhole is a solution of the Einstein field equations

In general relativity, an exact solution is a Lorentzian manifold equipped with tensor fields modeling states of ordinary matter, such as a fluid, or classical nongravitational fields such as the electromagnetic field.
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