Abstract: Starting from the theory of the energy-momentum tensor, we introduce the four vector density of entropy current in which the entropy density is regarded as function of the energy density and of the symmetric strain tensor. By considering the concept of relativistic equilibrium state, it is defined the temperature in a generic inertial frame obtaining the transformation equations introduced by H. Ott for the temperature and the heat (without postulate Gibbs relation). Moreover, the considerations on the relativistic stress tensor allow us to obtain the transformation equations for the strain tensor. Finally time component of the derivative with respect to the coordinate of the four vector density of entropy current expresses the entropy balance and therefore the entropy production.

Brief biography of the speaker:
Important Career Positions: Director of Computer Center University of Messina (Italy), Full Professor 1987-, University of Messina, Faculty of Mathematical-Physics and Natural Sciences.
Number of PhD Students: 10 in due time and 5 Doctors in Mathematics.
Membership of Associations: Academia Peloritana of Messina (1975).
Publications: over 2 books; 87 papers.
Organizer: The 10-th International Conference “Wascom 99” of Waves and Stability in Continuos Media, June 7-12, 1999 Vulcano (Eolie Islands), Italy; The International Conference of Differential Geometry and Dynamical Systems, University Politehnica of Bucharest, October 5-7, 2007
Fields of Interest: Themodynamics systems, Viscoanelastic media, Dielectric and magnetic relaxation phenomena, Dynamical Systems, Applied Mathematics and Physics.