Tetraden

Die von den Kruskal-Szekeres-Koordinaten induzierte Tetrade ist:

$$\begin{eqnarray}\html{eqn90} \Ve_v &=& k_1{}^{-1/2} \partial_v, \\ \Ve_u &=& ... ...l_\theta, \\ \Ve_\phi &=& \frac{1}{r \sin\theta} \partial_\phi. \end{eqnarray}$$

Die dazu duale Basis ist:

$$\begin{eqnarray}\html{eqn94} \Vomega^v &=& k_1{}^{1/2} \Vd{v}, \\ \Vomega^u &... ..., \Vd{\theta}, \\ \Vomega^\phi &=& {r \sin\theta} \, \Vd{\phi}. \end{eqnarray}$$