On the symmetries of the 1+1 dimensional relativistic fluid dynamics
  A very intuitive description of nucleus-nucleus collision phenomena is provided by the relativistic fluid dynamics. We consider a 1+1 dimensional relativistic imperfect fluid flow to approximate the high energy heavy ion collision. The article investigates the application of the continuous symmetry group on the relativistic fluid energy-momentum tensor conservation equations in the ultrarelativistic limit $\gamma \rightarrow \infty$. 
C Alexa (1), D Vrinceanu (2) ((1)High Energy Dept. Bucharest Romania,   (2)University of Bucharest Romania)