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Пример:
* <tex dpi="350">A = \left \{ \alpha, \beta, \gamma \right \}</tex>
* <tex dpi="350">Set(A) = \left \{ \varnothing , \left \{ \alpha \right \}, \left \{ \beta\right \}, \left \{ \gamma \right \}, \left \{ \alpha, \beta\right \}, \left \{ \alpha, \gamma \right \}, \left \{ \beta, \gamma \right \}, \left \{ \alpha, \beta, \gamma \right \} \right \}</tex>
<tex dpi="350">Set(A)=\prod_{\alpha \in A}(\varepsilon+\left \{ \alpha \right \})</tex>
<tex dpi="350">Set(A)(t)=\prod_{\alpha \in A}(1+t^{w(\alpha)})=\prod_{n=0}^{\infty}(1+t^n)^{a_n}</tex>
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