2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35627The temperature of an extremal Reissner - Nordstrom black hole is not restricted by the requirement of absence of a conical singularity. It is demonstrated how Kruskal-like coordinates may be constructed corresponding to any temperature whatsoever. A recently discovered stringy extremal black hole which apparently has an infinite temperature is also shown to have its temperature unrestricted by conical singularity arguments.11 pages, REVTEXGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext