Example image of eyePlorer eyePlorer map for 'Fundamental group': Algebraic topology Group (mathematics) Mathematics Pointed space Homotopy group Covering space Commutator subgroup Homology (mathematics) Presentation of a group Simplicial complex Bernhard Riemann Complex analysis Felix Klein Henri Poincaré Monodromy Riemann surface Surface Continuous function (topology) Path (topology) Equivalence class Homotopy Connectedness Isomorphism Up to Isomorphism class Convex set Simply connected space Integer Borsuk–Ulam theorem Brouwer fixed point theorem Winding number Abelian group Free group Rose (topology) Graph (mathematics) Euler characteristic Trefoil knot Group homomorphism Induced homomorphism (fundamental group) Category of groups Functor Coproduct Direct product Product (category theory) Free product Wedge sum Pushout (category theory) Seifert–van Kampen theorem Fibration Classifying space