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Badly approximable infinite products of quadratic polynomials

Number Theory 2022-11-14 v1

Abstract

We provide a number of conditions on the rational numbers uu and vv which ensure that the Laurent series gu,v(x):=t=0(1+ux3t+vx23t)g_{u,v}(x):=\prod_{t=0}^\infty (1+ux^{-3^t} + vx^{-2\cdot 3^t}) is badly approximable.

Keywords

Cite

@article{arxiv.2211.05915,
  title  = {Badly approximable infinite products of quadratic polynomials},
  author = {Dmitry Badziahin and Cameron Eggins},
  journal= {arXiv preprint arXiv:2211.05915},
  year   = {2022}
}

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13 pages