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Moore-Penrose inverse of distance Laplacians of trees are Z matrices. (arXiv:2207.12402v1 [math.CO]) http://arxiv.org/abs/2207.12402
Moore-Penrose inverse of distance Laplacians of trees are Z matrices. (arXiv:2207.12402v1 [math.CO]) http://arxiv.org/abs/2207.12402