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  "Title": "The Lorentz Transformation in Relativistic Physics",
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      "page": "lorentz-package",
      "title": "The Lorentz Transformation in Relativistic Physics",
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        "gyrogroup",
        "Lorentz",
        "lorentz"
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        "as.matrix.4vel"
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        "c.4vel"
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        "[.vec",
        "[.vel",
        "[<-.3vel",
        "[<-.4vel",
        "[<-.vel"
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        "4mom",
        "4momentum",
        "as.4mom",
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        "fourmomentum",
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        "4vel",
        "4velocity",
        "as.4vel",
        "four-velocity",
        "fourvel",
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        "Galilean",
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        "gam.4vel",
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