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arXiv · 2310.06868

A Quantitative Hasse Principle for Weighted Quartic Forms

Daniel Flores
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Abstract

We derive, via the Hardy-Littlewood method, an asymptotic formula for the number of integral zeros of a particular class of weighted quartic forms under the assumption of non-singular local solubility. Our polynomials $F({\mathbf x},{\mathbf y}) \in \mathbb{Z}[x_1,\ldots,x_{s_1},y_1,\ldots,y_{s_2}]$ satisfy the condition that $F(\lambda^2 {\mathbf x}, \lambda {\mathbf y}) = \lambda^4 F({\mathbf x},{\mathbf y})$. Our conclusions improve on those that would follow from a direct application of the methods of Birch. For example, we show that in many circumstances the expected asymptotic formula holds when $s_1 \ge 2$ and $2s_1 + s_2 > 8$.

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Daniel Flores. 2023-10-06. A Quantitative Hasse Principle for Weighted Quartic Forms. https://arxiv.org/abs/2310.06868

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