Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2021/iii/paper-309/3/d/solution

Cartan's second structure equation gives
and, for ,
With all indices lowered and the curvature convention in the question, the independent nonzero orthonormal Riemann curvature tensor components are
together with those obtained from the Riemann symmetries.

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