Lightcone coordinates: Difference between revisions
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In [[Theory of relativityspecial relativity]], '''lightcone 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.
