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    Home/Original/inverse
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    Inverse View

    It is not the case that A Thornian time machine cannot operate in a spatially open universe while consistently satisfying Einstein's field equations and the weak energy condition.

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.A partial Cauchy surface must be compact if its future Cauchy horizon is compact (independent of field equations and energy conditions).
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    • 2.A necessary condition for a Thornian time machine to operate is that the future Cauchy horizon of the initial partial Cauchy surface is compactly generated.
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    • 3.Einstein's field equations combined with the weak energy condition rule out a non-compact partial Cauchy surface having a compactly generated future Cauchy horizon.
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