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Dimension theory of the product of partial quotients in Lüroth expansions
International Journal of Number Theory ( IF 0.5 ) Pub Date : 2020-10-23 , DOI: 10.1142/s1793042121500287 Bo Tan 1 , Qinglong Zhou 2
International Journal of Number Theory ( IF 0.5 ) Pub Date : 2020-10-23 , DOI: 10.1142/s1793042121500287 Bo Tan 1 , Qinglong Zhou 2
Affiliation
For x ∈ [ 0 , 1 ) , let [ d 1 ( x ) , d 2 ( x ) , … ] be its Lüroth expansion and { p n ( x ) q n ( x ) , n ≥ 1 } be the sequence of convergents of x . Define the sets
𝜀 2 ( φ ) = { x ∈ [ 0 , 1 ) : d n + 1 ( x ) d n ( x ) ≥ φ ( n ) for infinitely many n ∈ ℕ } ,
U ∗ ( τ ) = x ∈ [ 0 , 1 ) : x − p n ( x ) q n ( x ) < 1 q n ( x ) ( τ + 1 ) for n ∈ ℕ ultimately
and
F ( τ ) = x ∈ [ 0 , 1 ) : lim n → ∞ log ( d n ( x ) d n + 1 ( x ) ) log q n ( x ) = τ ,
where φ : ℕ → [ 2 , ∞ ) is a positive function. In this paper, we calculate the Lebesgue measure of the set 𝜀 2 ( φ ) and the Hausdorff dimension of the sets U ∗ ( τ ) and F ( τ ) .
中文翻译:
Lüroth展开中偏商乘积的量纲理论
为了X ∈ [ 0 , 1 ) , 让[ d 1 ( X ) , d 2 ( X ) , … ] 是它的 Lüroth 扩张和{ p n ( X ) q n ( X ) , n ≥ 1 } 是收敛的序列X . 定义集合
𝜀 2 ( φ ) = { X ∈ [ 0 , 1 ) : d n + 1 ( X ) d n ( X ) ≥ φ ( n ) 对于无限多 n ∈ ℕ } ,
ü * ( τ ) = X ∈ [ 0 , 1 ) : X - p n ( X ) q n ( X ) < 1 q n ( X ) ( τ + 1 ) 为了 n ∈ ℕ 最终
和
F ( τ ) = X ∈ [ 0 , 1 ) : 林 n → ∞ 日志 ( d n ( X ) d n + 1 ( X ) ) 日志 q n ( X ) = τ ,
在哪里φ : ℕ → [ 2 , ∞ ) 是正函数。在本文中,我们计算了集合的 Lebesgue 测度𝜀 2 ( φ ) 和集合的 Hausdorff 维数ü * ( τ ) 和F ( τ ) .
更新日期:2020-10-23
中文翻译:
Lüroth展开中偏商乘积的量纲理论
为了