EntityQ5249754· pop 6· linked from 146 articlesDedekind-infinite setSign in to saveproper subset B of A that is equinumerous to AConnectionsset theoryEntitysequenceEntitybijectionEntityinjectionEntitycardinalityEntityif and only ifEntitymathematicsEntityBertrand RussellEntityInternational Standard Book NumberEntitynatural numberEntityintegerEntityfunctionEntitymathematicianEntityAlfred North WhiteheadEntityCharles UniversityEntityRichard DedekindEntitymathematical inductionEntitysubsetEntityisomorphismEntityBernard BolzanoEntityCategoriesBasic concepts in infinite set theoryCardinal numbers