2 papers
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.MG2025
On the configurations of four spheres supporting the vertices of a tetrahedron
Marco Longinetti, Simone Naldi
A reformulation of the three circles theorem of Johnson with distance coordinates to the vertices of a triangle is explicitly represented in a polynomial system and solved by symbo…