$ \bigcap\limits_{k \in \mathbb{N}} \bigcup\limits

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$ \bigcap\limits_{k \in \mathbb{N}} \bigcup\limits_{n \in \mathbb{N}} A_{n, k}$ prove the properties of injection.

For $n, k \in \mathbb{N}$ we describe $A_{n, k}$ as a set of all functions $f \in \mathbb{N}^\mathbb{N}$, such that for for every function $f(n) = k$. For each of sets determined below (A and B) de...

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