Moore–Penrose inverse of the incidence matrix of a distance regular graph
Linear Algebra and Its Applications
Let Γ be a graph with n vertices, where each edge is given an orientation and let Q be the vertex-edge incidence matrix. We obtain a formula for the Moore–Penrose inverse of Q, when Γ is a distance regular graph. The formula is illustrated by examples.
Azimi, A. and Bapat, R. B., "Moore–Penrose inverse of the incidence matrix of a distance regular graph" (2018). Journal Articles. 1275.
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