Sets ■Subset:ScT Equal sets:S=T Countable vs.uncountable Universal set 0:The set which contains all objects that could conceivably be of interest in a particular context Complement:S=Sc=-S.Sets  Subset: 𝑆 ⊆ 𝑇  Equal sets: 𝑆 = 𝑇  Countable vs. uncountable  Universal set Ω: The set which contains all objects that could conceivably be of interest in a particular context.  Complement: 𝑆 = 𝑆 𝑐 = Ω − 𝑆