Mathematical methods for physicists

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Etiam porta sem malesuada magna mollis euismod rendered as bold text. Cras mattis consectetur purus sit amet fermentum le syndrome du clandestin. A clear, authoritative judicial holding on the meaning of a particular

\[ \begin{align} \frac{d}{d t} \frac{\partial {\mathcal L}}{\partial \dot{q}} & = \frac{\partial {\mathcal L}}{\partial q} \\ H & = \frac{\partial {\mathcal L}}{\partial \dot{q}}\dot{q}-{\mathcal L}\\ -\frac{\partial S}{\partial t} & = H\left(q, \frac{\partial S}{\partial q}, t\right) \end{align} \]

provision should not be cast in doubt and subjected to challenge whenever a related though not utterly inconsistent provision is adopted in the same statute or even in an affiliated statute, the two authors wrote