EntityQ2905654· pop 6· linked from 40 articlesrepresentationSign in to savein mathematics, an object whose endomorphisms are isomorphic to another structureConnectionsgraphEntitysubsetEntitydirected graphEntitymathematicsEntityecologyEntitygeometryEntityInternational Standard Book NumberEntitydigital object identifierEntitymathematical logicEntityvector spaceEntityabstract algebraEntitygroup theoryEntityPaul ErdősEntitygraph theoryEntityBoolean algebraEntitynumber lineEntitylinear mapEntityalgebraic structureEntitycomplementEntitypolysemyEntityCategoriesMathematical relations