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Expressing the difference of two Hurwitz zeta functions by a linear combination of the Gauss hypergeometric functions

Classical Analysis and ODEs 2025-02-04 v1

Abstract

In the paper, the author expresses the difference 2m[ζ(m,1+x2)ζ(m,2+x2)]2^m\bigl[\zeta\bigl(-m,\frac{1+x}{2}\bigr)-\zeta\bigl(-m,\frac{2+x}{2}\bigr)\bigr] in terms of a linear combination of the function Γ(m+1)2F1(m,x;1;2)\Gamma(m+1){\,}_2F_1(-m,-x;1;2) for mN0m\in\mathbb{N}_0 and x(1,)x\in(-1,\infty) in the form of matrix equations, where Γ(z)\Gamma(z), ζ(z,α)\zeta(z,\alpha), and 2F1(a,b;c;z){}_2F_1(a,b;c;z) stand for the classical Euler gamma function, the Hurwitz zeta function, and the Gauss hypergeometric function, respectively. This problem originates from the Landau level quantization in solid state materials.

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Cite

@article{arxiv.2502.00624,
  title  = {Expressing the difference of two Hurwitz zeta functions by a linear combination of the Gauss hypergeometric functions},
  author = {Feng Qi},
  journal= {arXiv preprint arXiv:2502.00624},
  year   = {2025}
}

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12 pages