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The first regular exact black hole solution in general relativity is presented. The source is a nonlinear electrodynamic field satisfying the weak energy condition, which in the limit of weak field becomes the Maxwell field. The solution corresponds to a charged black hole with |q|2s₂m0. 6m, having the metric, the curvature invariants, and the electric field regular everywhere.
Ayón–Beato et al. (Mon,) studied this question.