Express
$$\forall\ n\in\mathbb N\ \exists\ m \in\mathbb N: \ n^4 = m^2$$
in words without using the symbol $\mathbb N$.
Express
$$\forall\ n\in\mathbb N\ \exists\ m \in\mathbb N: \ n^4 = m^2$$
in words without using the symbol $\mathbb N$.
On
For every n belongs to natural numbers there exists a m belongs natural numbers such that fourth power of n is equal to square of m.
In words, and clearer, every perfect fourth power is a perfect square.