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Daniil RUDENKO Daniil RUDENKO  Rational Elliptic Surfaces and Trigonometry of Non-Euclidean Tetrahedra I will explain how to construct a rational elliptic surface out of every non-Euclidean tetrahedra. This surface "remembers" the trigonometry of the tetrahedron: the length of edges, dihedral … Continuer la lecture →