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On the density version of quadratic Waring's problem and the quadratic Waring--Goldbach problem
Published 20 Aug 2025 in math.NT | (2508.14939v1)
Abstract: We prove a sharp density theorem for quadratic Waring's problem over cyclic groups, when the number of variables is at least $5$. Also, we obtain some new improvements on the density version of the quadratic Waring--Goldbach problem over integers.
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