# Difference between revisions of "Errata: Subscripts are unreadable in equation (4.30) in the online version of the first edition"

Location: page 176, line -5

The text for the online version of the first edition has some errors in the fonts in equation (4.30). The correct equation is

<amsmath>

\frac{\partial M_{ij

(Contributed by D. de Giulii, 16 Aug 09)

{\partial \theta_k} =

 \sum_{l=\max(i,j)}^n
\Bigl(
[A_{ki} \xi_i, \xi_k]^T A_{lk}^T {\cal M}_l' A_{lj} \xi_j
+ \xi_i^T A_{li}^T {\cal M}_l' A_{lk} [A_{kj} \xi_j, \xi_k]
\Bigr).

</amsmath>

}}