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Figure 8
A special case of the blended and the RBS coordinates, where [v \to c]. (a) A plot of the blended coordinates given in equations (7a)[link] and (8)[link]. (b) RBS coordinates, given in equation (11b)[link], transform (a) into a circle of radius [\xi], where the four hyperbola branches in (a) become four arc segments of the circle. Purple (black) hyperbola branches and arc segments represent directions from the origin where time-like (space-like) events occur for a fixed [\xi]. Blended and RBS light lines are shown by yellow lines. See the Mathematica script in the Mathematica notebook in the supporting information to generate these plots.

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ISSN: 2053-2733
Volume 77| Part 4| July 2021| Pages 242-256
https://doi.org/10.1107/S2053273321003259
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