Identities, Ore extensions and character skew derivations
作者： Chen-Lian Chuang
DOI: 10.1016/J.JALGEBRA.2015.06.013
关键词:
摘要: Following [17], a σ-derivation δ is called quasi-algebraic if there exist a,ai∈Q such that δk(x)+∑i=1k−1aiδi(x)+ax−σk(x)a=0 for x∈Q. Let k be the minimal integer and g0,g1,… mutually outer automorphisms of Q. f(zij) generalized polynomial in variables zij, where i≥0 0≤j
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