Example image of eyePlorer eyePlorer map for 'Hopf fibration': 3-sphere Circle Fourth dimension N-sphere Sphere Topology Fiber bundle Heinz Hopf Continuous function Product topology Homotopy groups of spheres Circle group Principal bundle Stereographic projection Torus Villarceau circles Image (mathematics) Octonion Quaternion Real number Twistor theory Euclidean space Natural number Point (geometry) Origin (mathematics) Complex number Complex conjugate Subset Disjoint union Linear subspace Riemann sphere Equivalence relation Quotient space Alexandroff extension Point at infinity Homeomorphism Neighbourhood (mathematics) Covering group Diffeomorphism Rotation group Spin group Group action Circle bundle Special unitary group Isometry Great circle Cartesian coordinate system Projective space Division algebra Real projective line