“…Third, it is remarkable that all the nonlinear electrodynamics models coupled to gravity satisfy the zeroth and the first laws of black hole mechanics [7]. Fourth, there has been a significant amount of interest in cosmological models involving nonlinear electromagnetic fields [8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27]. If the early universe is dominated by radiation governed by Maxwell's equations it is well known that there will be a spacelike initial singularity in the past.…”