Discrete logarithmic-derivative measure conjecture

Let L-Pn\mathcal{L}\text{-}\mathcal{P}_n denote the real polynomials of degree nn with only real zeros, let μ(p)\mu(p) be the mesh size, and let mm denote Lebesgue measure. Discrete measure conjecture. If pL-Pnp\in\mathcal{L}\text{-}\mathcal{P}_n, n2n\ge 2, and μ(p)1\mu(p)\ge 1, then

m({xR:p(x+1)p(x)p(x)λ})=nλm\left(\left\{x\in\mathbb{R}:\frac{p(x+1)-p(x)}{p(x)}\ge\lambda\right\}\right)=\frac{n}{\lambda}

for all λ>0\lambda>0. This is the discrete analogue of the corresponding theorem for the logarithmic derivative, and the supplied text does not report a resolution.

Sources & referencesView supporting material

Primary source

George Csordas and Matthew Chasse, “Discrete analogues of the Laguerre inequalities and a conjecture of I. Krasikov”, arXiv:1005.5186 (2010).

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