MathDB2 problems
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Nonexistence of rotating charged black holes in five-dimensional Einstein-Maxwell theory
Consider five-dimensional pure Einstein-Maxwell theory and seek an exact rotating, charged generalization of the Kerr-Newman black hole. The relevant fields must satisfy the Einste…
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Ansorg's inequality conjecture for black holes surrounded by matter
Ansorg's inequality conjecture. If the black hole is surrounded by matter, so that it is not a member of the Kerr–Newman family, then