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Source — Euclid's Elements, encoded as an rrxiv paper — rrxiv

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Source — Euclid's Elements, encoded as an rrxiv paper

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IX.6 Proposition IX.6

If a number by multiplying itself make a cube number, it itself will also be cube.

Proof

If

n^{2} = a^{3}

then

n^{2} \cdot n = a^{3} \cdot n

is cubed; by VIII.25

n

is cube.

lines 74–74 in main.tex