Geometric approaches to the thermodynamics of black holes
  In this summary, we present the main topics of the talks presented in the parallel session "Black holes - 5" of the 14th Marcel Grossmann Meeting held in Rome, Italy in July 2015. We first present a short review of the main approaches used to understand thermodynamics by using differential geometry. Then, we present a brief summary of each presentation, including some general remarks and comments. 
Christine Gruber, Orlando Luongo and Hernando Quevedo
gr-qc