Does anyone know what this means: [tex]\nabla_{[a}F_{bc]}[/tex]? I know that [tex]F_{(ab;c)}=\frac{1}{3}(F_{ab;c}+F_{bc;a}+F_{ca;b})[/tex], and presume that the first expression can be written thus [tex]F_{[bc;a]}[/tex], but am not sure what it means!(adsbygoogle = window.adsbygoogle || []).push({});

Can anyone help?

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# Quick question on notation.

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