Is there a general way of proving that the scalar product(adsbygoogle = window.adsbygoogle || []).push({});

x_{u}x^{u}= (x^{0})^{2}- (x^{1})^{2}- (x^{2})^{2}- (x^{3})^{2}

is invariant under a Lorentz transformation that applies no matter the explicit form of the transformation.

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# Proving that the scalar product is invariant

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