Asymptotic harmonic-mean conjecture for generalized Taylor means

Let a,ba,b be positive real numbers, let Mp,m1,m2(a,b)M_{p,m_{1},m_{2}}(a,b) denote the means defined in the paper, and set n=m1+m2+1n=m_{1}+m_{2}+1. The harmonic mean is H(a,b)=2aba+bH(a,b)=\tfrac{2ab}{a+b}. Asymptotic harmonic-mean conjecture.

limnMp,m1,m2(a,b)=H(a,b).\lim\limits_{n\rightarrow \infty}M_{p,m_{1},m_{2}}(a,b)=H(a,b).

This is proposed as an analogue of the established convergence of the Taylor polynomial means MprM_p^r to the harmonic mean. The asymptotic behavior of these generalized means is presented as an open direction for future research.

Sources & referencesView supporting material

Primary source

Alan Horwitz, “Means and Hermite Interpolation”, arXiv:0711.4940 (2008).

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