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What is a proper graph Laplacian? An operator-theoretic framework for graph diffusion

open access: yesSpecial Matrices
We introduce an operator-theoretic definition of a proper graph Laplacian as any matrix associated with a given graph that can be expressed as the composition of a divergence and a gradient operator, with the gradient acting between graph-related spaces ...
Estrada Ernesto
doaj   +1 more source

Trace formulae and inverse spectral theory for Schrödinger operators [PDF]

open access: green, 1993
Fritz Gesztesy   +3 more
openalex   +1 more source

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