For example, we write F$=\{0\mathrm{.}7$ Alice,$0\mathrm{.}9$ Brian,$0\mathrm{.}5$ Rita,$0\mathrm{.}1$ Oscar,$0\mathrm{.}35$ Fred$\}$ for the $($fuzzy$)$ set F of famous people to indicate that Alice has a $0\mathrm{.}7$ degree membership to F$,$ that Brian has a $0\mathrm{.}9$ membership to F and so on$.($ Thus for example Brian is the most famous of these people while Oscar is the least famous. $)$Also suppose that R is the $($fuzzy$)$ set of rich people given by R$=\{0\mathrm{.}2$Alice,$0\mathrm{.}4$Brian,$0\mathrm{.}25$Rita,$0\mathrm{.}5$Oscar,$0\mathrm{.}25$Fred$\}.$ The complement of a fuzzy setS is the fuzzy set S$,$ where the degree of memebership of an element in S$$ is $1$ minus the degree of membership of that element in S$.$Thus for example we have: