中文

图灵自同构问题的一个可处理情形:双一致$E_0$-不变的康托尔同胚

逻辑 2020-09-01 v2

摘要

函数F:2ω2ωF:2^\omega\to 2^\omega若对所有x,y2ωx,y\in 2^\omega满足xE0y    f(x)E0f(y)xE_0y\iff f(x)E_0 f(y),其中xE0y    (a)(nb)x(n)=y(n)xE_0y\iff(\exists a)(\forall n\ge b) x(n)=y(n),则称为E0E_0-同构。若xE0yxE_0 yf(x)E0f(y)f(x)E_0 f(y)的见证aa相互依赖而不依赖于x,yx,y,则称FF为双一致的。本文证明,作为双一致E0E_0-同构的康托尔空间同胚只能诱导图灵度上的平凡自同构。

关键词

引用

@article{arxiv.1908.05381,
  title  = {A tractable case of the Turing automorphism problem: bi-uniformly $E_0$-invariant Cantor homeomorphisms},
  author = {Bjørn Kjos-Hanssen},
  journal= {arXiv preprint arXiv:1908.05381},
  year   = {2020}
}

备注

Accepted for publication in: Higher recursion theory and set theory. Lecture Notes Series, Institute of Mathematical Sciences, National University of Singapore, World Scientific Publishing, Hackensack, NJ