English

On determinants involving $(\frac{j^2-k^2}p)$ and $(\frac{jk}p)$

Number Theory 2024-08-27 v1

Abstract

Let pp be an odd prime and let (p)(\frac{\cdot}p) be the Legendre symbol. In this paper, we study the determinant det[(j2k2p)+(jkp)w]δj,k(p1)/2\det\left[\left(\frac{j^2-k^2}p\right)+\left(\frac{jk}p\right)w\right]_{\delta\le j,k\le (p-1)/2} with δ{0,1}\delta\in\{0,1\}. For example, we prove that the determinant does not depend on ww if p3(mod4)p\equiv3\pmod4 and δ=0\delta=0.

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Cite

@article{arxiv.2408.14401,
  title  = {On determinants involving $(\frac{j^2-k^2}p)$ and $(\frac{jk}p)$},
  author = {Deyi Chen and Zhi-Wei Sun},
  journal= {arXiv preprint arXiv:2408.14401},
  year   = {2024}
}

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7 pages