Equation 23.2.348455EE64C6A0

\begin{equation} \iota _ B\iota _ A\widehat\omega ^ n =\frac{n}{4\pi \widehat\tau ^ n}\widehat\eta ^ m, \qquad \iota _ B\iota _ A(\omega _ u')^ n=\frac{n}{4\pi }\eta _ u^ m. \end{equation}