Complementary Cusick conjecture on strict Hamming-weight increase

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Let tt be a nonnegative integer, and define

c~t=dens⁡{n∈N:w(n+t)>w(n)},\widetilde c_t=\operatorname{dens}\bigl\{n\in\mathbb N:w(n+t)>w(n)\bigr\},

where dens⁡A\operatorname{dens} A denotes the asymptotic density of a set A⊆NA\subseteq\mathbb N.

Complementary Cusick conjecture. For every nonnegative integer tt,

c~t≤12.\widetilde c_t\leq\frac12.

This is the statement complementary to Cusick's conjecture for strict rather than weak Hamming-weight increase. The source discusses it as a conjecture related to the Tu–Deng problem, and no resolution is supplied.

References

Primary source

Lukas Spiegelhofer and Michael Wallner, “The Tu–Deng Conjecture holds almost surely”, arXiv:1707.07945 (2018).

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