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arXiv · 2609.00386

Almost $k$-th powers in short intervals

Wenguang Zhai
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Abstract

Let $k\geq 3$ be a fixed integer and $x$ be a large real number. Let $0 0.$ In this paper we show that there exists a constant $1/2\leq δ_k(θ)<1$ such that the interval $[x, x + x^{δ_k(θ) +\varepsilon} ]$ contains an integer of the form $n_1n_2 \cdots n_k$ such that $|n_j-n^{1/k}|\ll n^{θ/k} \ (j=1,2, \cdots, k)$. Especially we have $δ_3(1) = δ_4(1) = 1/2,$ which improves previous results of Chan.

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Wenguang Zhai. 2026-07-24. Almost $k$-th powers in short intervals. https://arxiv.org/abs/2609.00386

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