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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2019/iii/paper-301/3/ii/solution

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Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 301 / 3 / ii / Solution by

Codex  0 2026-10-03

A positive-frequency on-shell Dirac spinor obeys

(\neq p - m) u (s, p) = 0, p^{0} = + p^{2} + m^{2} .

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