A question of Joseph Ritt from the point of view of vertex algebras
A question of Joseph Ritt from the point of view of vertex algebras
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从顶点代数角度看 Joseph Ritt 的一个问题
DOI:
10.1016/j.jalgebra.2021.07.030
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发表时间:
2021
影响因子:
0.9
通讯作者:
Sebag Julien
中科院分区:
文献类型:
--
作者:
Arakawa Tomoyuki;Kawasetsu Kazuya;Sebag Julien
Let k be a field of characteristic zero. This paper studies a problem proposed by Joseph F. Ritt in 1950. Precisely, we prove that (1) If p⩾ 2 is an integer, for every integer i∈ N, the nilpotency index of the image of T i in the ring k {T}/[T p] equals (i+ 1) p− i.(2) For every pair of integers (i, j), the nilpotency index of the image of T i U j in the ring k {T}/[T U] equals i+ j+ 1.
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