González Robert–et al. twisted lim sup conjecture

About 1 year old · traced to

Let ω=(ωn)n≥1{\bm \omega}=({\bm \omega}_{n})_{n\ge 1} be a sequence of points in Rd\mathbb{R}^{d}, and let r=(r1,…,rd){\bf r}=(r_1,\ldots,r_d) be a dd-tuple of non-increasing functions. For the twisted lim sup set

T(ω,r):={β∈[0,1)d:ωn∈β+Rn(r)(mod1) for infinitely many n∈N},\mathcal{T}({\bm \omega},{\bf r}):=\left\{ {\bm \beta}\in[0,1)^{d}: {\bm \omega}_{n}\in {\bm \beta}+\mathcal{R}_{n}({\bf r})\pmod 1\text{ for infinitely many }n\in\mathbb{N}\right\},

González Robert–et al. conjecture. For almost every sequence ω{\bm \omega} in Rd\mathbb{R}^{d}, for every dd-tuple of non-increasing functions r=(r1,…,rd){\bf r}=(r_1,\ldots,r_d),

Ld(T(ω,r))={0,if ∑n=1∞∏i=1dri(n)<∞,1,if ∑n=1∞∏i=1dri(n)=∞.\mathcal{L}^{d}\big(\mathcal{T}({\bm \omega},{\bf r})\big)=\begin{cases}0,&\text{if }\sum_{n=1}^{\infty}\prod_{i=1}^{d}r_i(n)<\infty,\\1,&\text{if }\sum_{n=1}^{\infty}\prod_{i=1}^{d}r_i(n)=\infty. \end{cases}

This conjecture predicts a zero–one law for twisted lim sup sets generated by almost every sequence. The supplied text attributes it to González Robert et al. and does not provide evidence of resolution.

References

Primary source

Sam Chow and Qing-Long Zhou, “Twisted Diophantine approximation for matrix transformations of tori”, arXiv:2511.14954 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.