Example image of eyePlorer eyePlorer map for 'Unit sphere': Ball (mathematics) Distance Mathematics Sphere Origin (mathematics) Radius Scaling (geometry) Translation (geometry) Euclidean space Inequality Mathematical analysis Gamma function Norm (mathematics) Normed vector space Interior (topology) Euclidean distance Hilbert space Lp space Metric space Ultrametric space Dual number Quadratic form Split-complex number 6-sphere coordinates Beltrami–Klein model Carathéodory metric Closed geodesic Comparison triangle Contractibility of unit sphere in Hilbert space Field of values Kleinian group Modulus and characteristic of convexity Operator topology Spherical image Strictly convex space Unit disk Balanced set Clairaut's relation Complex geodesic Convex body Grothendieck inequality Hilbert metric John ellipsoid Russo–Dye theorem Unit tangent bundle Multipliers and centralizers (Banach spaces) Unit circle Absorbing set Cross-polytope Fixed point theorem