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math.MG2026
R-hulloid of the vertices of a tetrahedron
Marco Longinetti, Simone Naldi, Adriana Venturi
The -hulloid, in the Euclidean space , of the set of vertices of a tetrahedron is the minimal closed set containing such that its complement is the uni…
math.MG2024
On the complements of union of open balls and related set classes
Marco Longinetti, Paolo Manselli, Adriana Venturi
Let a -body be a closed set, complement of union of open balls of radius in the Euclidean space. Properties generalizing similar ones for convex sets are proved for the fami…