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Patterson’s first moment for cubic Gauss sums
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Difficulty:🧠🧠🧠🧠🧠 Ages:13 - ∞
Skills:primes, fractions, patience Levels:1
Category:Number theory Lean version:YES! ✔
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Patterson's first moment for cubic Gauss sums. Proves unconditionally the all-primary-prime form of Patterson’s first-moment asymptotic: normalized cubic Gauss sums over primary Eisenstein primes of norm at most X, including both conjugates, have an explicit positive main term of order $X^{5/6}/\log X$. Every fixed nonzero prime-angle Fourier mode has smaller order.

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released 2026-09-25  |  5 theorems · 12 lemmas · 25 proofs · 22,418 words  |  PLAY LEVEL 1 »  (pdf)
We prove Patterson's first-moment conjecture for normalized cubic Gauss sums over all primary Eisenstein primes, unconditionally. The sharp-cutoff main term is $(6/5)c_*X^{5/6}/\log X$, where $c_*=(2\pi)^{2/3}/(3\Gamma(2/3))$. For every fixed nonzero angular Fourier mode of the prime argument, we also prove cancellation at the first-moment scale.

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