EntityQ1186007· pop 10· linked from 19 articlesHartogs numberSign in to savegiven a set, the least ordinal such that there is no injection from the ordinal into the setConnectionsordinal numberEntityclassEntitywell-orderEntityaxiom schema of replacementEntitymathematicsEntityInternational Standard Book NumberEntityset theoryEntitysetEntitydigital object identifierEntityinjectionEntitycardinalityEntitypower setEntityaxiom of choiceEntitybinary relationEntityreflexive relationEntityQ22908627Entityaleph numberEntityZermelo–Fraenkel set theoryEntitymappingEntitywell-ordering theoremEntityCategoriesCardinal numbersSet theory