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I get in essence what the covariant derivative is, and what it does, but im having trouble with the definition, of all things.[tex]\nabla_{\alpha}T^{\beta\gamma}=\frac{\partial{T^{\beta\gamma}}}{\partial{x^{\alpha}}}+\Gamma^{\beta}_{d\alpha}T^{d\gamma}+\Gamma^{\gamma}_{d\alpha}T^{\beta d}[/tex]

Im good with everything except d. what is it? where did it come from? its just tacked into the formula but i dont understand what it is. any help would be greatly appreciated

Im good with everything except d. what is it? where did it come from? its just tacked into the formula but i dont understand what it is. any help would be greatly appreciated

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