Compute item for the trace of the spacetime Christoffel symbols of the first kind \(\Gamma_{a} = \Gamma_{abc}g^{bc}\) computed from the Christoffel symbols of the first kind and the inverse spacetime metric.
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template<typename DataType, size_t SpatialDim, typename Frame>
struct gr::Tags::TraceSpacetimeChristoffelFirstKindCompute< DataType, SpatialDim, Frame >
Compute item for the trace of the spacetime Christoffel symbols of the first kind \(\Gamma_{a} = \Gamma_{abc}g^{bc}\) computed from the Christoffel symbols of the first kind and the inverse spacetime metric.
Can be retrieved using gr::Tags::TraceSpacetimeChristoffelFirstKind