Tame Automorphisms with Multidegrees in the Form of Arithmetic Progressions

Tame Automorphisms with Multidegrees in the Form of Arithmetic Progressions
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DOI:
10.1515/ms-2015-0087
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发表时间:
2011-12
影响因子:
1.6
通讯作者:
Jiantao Li;Xiankun Du
Jiantao Li;Xiankun Du
中科院分区:
数学4区
文献类型:
--
作者:
Jiantao Li;Xiankun Du

文献摘要

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设(a, a + d, a + 2d)为正整数等差数列。证明了下列命题:(1)如果一个| 2d,则(a, a + d, a + 2d)∈mdeg(Tame(3))。(2)如果一个∤2 d和(a + d + 2 d)∉{(4,5,6),(我)我我10:我∈ℕ+},然后(a + d + 2 d)∉mdeg(驯服(ℂ3))。
Abstract Let (a, a + d, a + 2d) be an arithmetic progression of positive integers. The following statements are proved: (1) If a | 2d, then (a, a + d, a + 2d) ∈ mdeg(Tame(ℂ3)). (2) If a ∤ 2d and (a, a + d, a + 2d) ∉ {(4i, 5i, 6i), (4i, 7i, 10i) : i ∈ ℕ+}, then (a, a + d, a + 2d) ∉ mdeg(Tame(ℂ3)).