According to the Minkowski spacetime model used in special relativity, how is time mathematically treated in relation to spatial coordinates?

Answer

Time is treated as a fourth dimension, equivalent to spatial dimensions in the metric signature, though with a negative sign.

The coordinates are structured as $(ct, x, y, z)$, indicating time is a dimension fundamentally linked to space, distinguished primarily by the sign in the metric signature.

According to the Minkowski spacetime model used in special relativity, how is time mathematically treated in relation to spatial coordinates?

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