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Counting (skew-)reciprocal Littlewood polynomials with square discriminant

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arxiv 2301.05656 v2 pith:H356US3R submitted 2023-01-13 math.NT math.CO

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keywords littlewoodpolynomialsasymptoticsdiscriminantestablishpolynomialreciprocalsquare
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abstract

A Littlewood polynomial is a single-variable polynomial all of whose coefficients lie in $\{ \pm 1\}$. We establish the leading term asymptotics of the number of reciprocal or skew-reciprocal Littlewood polynomials with square discriminant. This relates to a bounded-height analogue of the Van der Waerden conjecture on Galois groups of random polynomials. As a byproduct, we establish the asymptotics of certain Gaussian-weighted counts of Pythagorean triples.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Law of large numbers for the discriminant of random polynomials

    math.PR 2025-06 conditional novelty 8.0 of 10

    Random Kac polynomials have discriminant |Δ(f_n)| = n^{2n} e^{-D_* n(1+o(1))} with an explicit universal constant D_* ≈ 5.92947.

  2. Galois groups of random integer matrices

    math.NT 2025-06 reject novelty 6.0 of 10

    The paper improves the trivial count of integer matrices with non-generic characteristic polynomial Galois group from T^{n^2} to T^{n^2-1/2} log T, and gives sharper bounds for special matrix classes.

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