Sets -Basic Notations x∈S membership SCT subset SCT proper subset S Cfin T finite subset S=T equivalence 0 the empty set N natural numbers Z integers B [true,false 4/40 Sets – Basic Notations x ∈ S membership S ⊆ T subset S ⊂ T proper subset S ⊆fin T finite subset S = T equivalence ∅ the empty set N natural numbers Z integers B {true,false} 4 / 40