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    The inference from 'each point has an independent tetrad'... — Carmelics
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    Challenges→In general relativity the gauge factor necessarily becomes an arbitrary function of spacetime position.

    The inference from 'each point has an independent tetrad' to 'gauge factor must be position-dependent' suppresses the conventionalist alternative that global gauges remain physically admissible by stipulation.

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    Key Terms

    Physically admissible(A mathematically possible answer might not be 'physically admissible' if it violates how nature actually works)
    Allowed by or consistent with the laws of physics; something that could actually happen in the real world.
    conventionalist alternative(a philosophical position that challenges whether something must be true versus merely agreed upon)
    A different way of understanding something based on the idea that certain rules or facts are just human agreements rather than absolute truths about reality.
    gauge factor(Weyl's gauge theory in the context of Dirac spinors and general relativity)
    A complex number e^(iλ) of absolute value 1 by which the spinor components ψ₁, ψ₂ may be arbitrarily multiplied without changing the physically meaningful content determined by the tetrad.
    global gauges(in physics, using the same gauge throughout all of space)
    A single, uniform measurement system or reference frame that applies everywhere, rather than changing from place to place.

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    inference(Nyāya epistemology)
    A component of epistemology in Nyāya philosophy; a veritable inference yields knowledge about the world and must have premises that are themselves known
    position-dependent(describing something that differs at different positions)
    Something that changes based on where you are in space; it varies from location to location.
    stipulation(in philosophy and formal reasoning)
    A choice or assumption you decide to make for the sake of an argument, rather than something that must be true by logical necessity.
    tetrad(General relativistic formulation of spinor fields)
    A local frame field — a set of four orthonormal basis vectors defined at each point of spacetime — used to connect the curved spacetime manifold to the flat tangent space in which spinors are defined.

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    2 topics

    Causation1 linkedModality & Possibility1 linked

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    In general relativity the gauge factor necessarily becomes an arbitrary function...

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