Percolating paths through random points
Résumé
We prove consistency of four different approaches to formalizing the idea of minimum average edge-length in a path linking some infinite subset of points of a Poisson process. The approaches are (i) shortest path from origin through some m distinct points; (ii) shortest average edge-length in paths across the diagonal of a large cube; (iii) shortest path through some specified proportion ? of points in a large cube; (iv) translation-invariant measures on paths in R^d which contain a proportion ? of the Poisson points. We develop basic properties of a normalized average length function c(?) and pose challenging open problem
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