EDB — 24D

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Teorema 184

[24D] Consideriamo la relazione d’ordine \(⊆ \) su \(ℕ\); allora

\begin{equation} ∀ x,y ∈ ℕ , (x ⊆ Sy∧ x≠ Sy) \iff (x ⊆ y ) \quad . \label{eq:subseteq_ caratt_ le_ N} \end{equation}
185

Questo sarà dimostrato nell’Esercizio [26P].

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