Relativistic Elasticity II

This paper is based on a series of talks given at the ESI program on ‘Mathematical Perspectives of Gravitation Beyond the Vacuum Regime’ in February 2022. It is meant to be an introduction to the field of relativistic elasticity for readers with a good base in the mathematics of General Relativity with no necessary previous of knowledge of elasticity either in the classical or relativistic domain. Despite its introductory purpose, the present work has new material, in particular related to the formal structure of the theory.