Revision as of 01:01, 12 July 2009 by Schubotz(talk | contribs)(Die Seite wurde neu angelegt: „<math>{{u}^{\mu }}:=\frac{d{{x}^{\mu }}}{d\tau }=\gamma \left( \begin{matrix} c & {{v}^{1}} & {{v}^{2}} & {{v}^{3}} \\ \end{matrix} \right)</math> <math>{{u}…“)