Thermodynamic Product Relations for Generalized Regular Black Hole
  We derive thermodynamic product relations for four-parametric regular black hole (BH) solutions of the Einstein equations coupled with a non-linear electrodynamics source. The four parameters can be described by the mass ($m$), charge ($q$), dipole moment ($\alpha$) and quadrupole moment ($\beta$) respectively. We study its complete thermodynamics. We compute different thermodynamic products i.e. area product, BH temperature product, specific heat product and Komar energy product respectively. Furthermore, we show that some complicated function of horizon areas that is indeed \emph{mass-independent} and could turn out to be \emph{universal}. 
Parthapratim Pradhan
gr-qc hep-th