/text/smath/01/03091503.xhp set operators;list of Set Operators Typed command(s) Symbol in Elements Window Meaning aleph Icon Cardinal number emptyset Icon Empty set in Icon is contained in intersection Icon Intersection of sets notin Icon is not contained in nsubset Icon Not subset to nsubseteq Icon Not subset or equal to nsupset Icon Not superset nsupseteq Icon Not superset or equal to owns or ni Icon Contains setc Icon Complex number setminus or bslash Icon Difference between sets setn Icon Natural number setq Icon Rational number setr Icon Real number setz Icon Integer slash Icon Slash / for quotient set (slash) between characters subset Icon Subset subseteq Icon Subset or equal to supset Icon Superset supseteq Icon Superset or equal to union Icon Union of sets