. "Elements of Mathematics" . "Element (mathematics)#Notation and terminology" . . "is an element of" . "Member" . . "Elements" . "membership relation" . "Element_(mathematics)#Notation_and_terminology" . . "elements" . "member" . "membership of a class" . . "an element" . . "contain" . . . "element (mathematics)#Notation and terminology" . . . "members" . . "Set membership" . . "belongs" . . . . . . . "\u00C9l\u00E9ments" . . . . "belongs to" . "contained" . "Elements in the Philosophy of Mathematics" . . "Element (mathematics)" . "element" . "is a member of" . "membership" . "set membership" . "element-of" . . . . "Element (mathematics)" . .