Show that the four-momentum of any material particle

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Reference no: EM131049855

(a) Show that the four-momentum of any material particle (m > 0) is forward time-like.

(b) Show that the sum of any two forward time-like vectors is itself forward time-like, and hence that the sum of any number of forward time-like vectors is its self forward time-like.

Reference no: EM131049855

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