A position four-vector is a mathematical construct in the context of relativity that combines the spatial position and time of an event into a single entity. It is represented as a four-component vector, typically written as \(X = (ct, x, y, z)\), where \(c\) is the speed of light, and \(t\), \(x\), \(y\), and \(z\) denote time and the three spatial coordinates, respectively. This formulation is essential for describing events in Minkowski spacetime, where both space and time are treated on equal footing.
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