FACW_MATH_1997_10957162_Kirkland_Neumann_Shader.pdf (235.74 kB)
Download fileDistances in Weighted Trees and Group Inverse of Laplacian Matrices
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posted on 2021-11-15, 21:40 authored by S. J. Kirkland, M. Neumann, Bryan L. ShaderIn this paper we find formulas for group inverses of Laplacians of weighted trees. We then develop a relationship between entries of the group inverse and various distance functions on trees. In particular, we show that the maximal and minimal entries on the diagonal of the group inverse correspond to certain pendant vertices of the tree and to a centroid of the tree, respectively. We also give a characterization for the group inverses of the Laplacian of an unweighted tree to be an M-matrix.
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University of Wyoming. LibrariesJournal title
SIAM Journal on Matrix Analysis and ApplicationsCollection
Faculty Publication - Department of Mathmatics & StatisticsDepartment
- Library Sciences - LIBS