**Cubic monic densities.** For every `q > 1`, the universal monic expressions of degree `3` on the five valid cubic types, with `Φ₅(q) = q⁴ + q³ + q² + q + 1`;

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**Cubic monic densities.** For every `q > 1`, the universal monic expressions of degree `3` on the five valid cubic types, with `Φ₅(q) = q⁴ + q³ + q² + q + 1`; · Prove2Me