English

On families of monic polynomials

Number Theory 2026-01-13 v1

Abstract

In this paper we derive generalizations of different properties of monic polynomial families of binomial type, i.e. families of monic polynomials, for which the binomial theorem holds pn(α+β)=k=0n(nk)pk(α)pnk(β) p_n(\alpha+\beta)=\sum_{k=0}^n \left(\vphantom{\bigg|}\genfrac{}{}{0pt}{0}{n}{k}\right) p_k(\alpha)p_{n-k}(\beta) Some trivial representations of general ''multiplication'' and ''derivative'' operators are derived. In addition we derive a formula for the logarithmic derivative of general monic polynomial pn(x)p_n(x) which reduces to the formula 1npn(x)pn(x)=(x+1φ(y)(ddynL))1φ(y)yφ(y) y=0 \frac{1}{n}\frac{p_n'(x)}{p_n(x)} =\left(x+\frac{1}{\varphi'(y)}\left(\frac{d}{dy}-n\mathrm{L}\right)\right)^{-1}\cdot\left.\frac{\varphi(y)}{y\varphi'(y)}~\right|_{y=0} derived by the author in binomial case, when the generating function of pn(x)p_n(x) equals to exφ(y)e^{x\varphi(y)}.

Keywords

Cite

@article{arxiv.2601.07029,
  title  = {On families of monic polynomials},
  author = {Danil Krotkov},
  journal= {arXiv preprint arXiv:2601.07029},
  year   = {2026}
}