Light-cone coordinates: Difference between revisions

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In [[Theory of relativity|special relativity]], '''light-cone coordinates''' is a special coordinate system where two of the coordinates, x<sup>+</sup> and x<sup>−</sup> are [[null (mathematics)|null]] coordinates and all the other coordinates are spatial. Call them <math>x_\perp</math>.
Assume we're working with a (d,1) Lorentzian signature.
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