An ellipsoid, a hyperboloid of one sheet, and a hyperboloid of two sheets, each with with three distinct axes, and each a member of a one-parameter family of mutually-orthogonal surfaces.
Handmade in the UK by specialist picture framers using premium fine art paper with a gently textured surface and satin finish, high-quality wood, and an FSC certified off-white mat. Delivered ready for hanging.
