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Hopf type theorems for surfaces in the de Sitter-Schwarzschild and Reissner-Nordstrom manifolds. (arXiv:2203.06206v1 [math.DG]) http://arxiv.org/abs/2203.06206
Hopf type theorems for surfaces in the de Sitter-Schwarzschild and Reissner-Nordstrom manifolds. (arXiv:2203.06206v1 [math.DG]) http://arxiv.org/abs/2203.06206