Example image of eyePlorer eyePlorer map for 'Isomorphism class': Isomorphism Mathematical object Graph theory Ordinal 2 × 2 real matrices Associative algebra Ring theory Split-quaternion Fundamental group Homotopy Abelian group Conjugacy class Covering space Graph canonization Characteristic class Composition series Category of vector spaces Topological K-theory Graph isomorphism Circle bundle Chief series Classifying space for U(n)