A Jacobian criterion for separability
A Jacobian criterion for separability
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DOI:
10.1016/0021-8693(80)90233-1
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发表时间:
1980-08
影响因子:
0.9
通讯作者:
S. Wang
中科院分区:
文献类型:
--
作者:
S. Wang
Contents. 1.Introduction and Notation; 2.A Jacobian Criterion for Separability; 3.A Jacobian Criterion for Extension of Derivations; 4.Explicit Formulas for the Separability Idempotent; 4.1. 1-variable, 1-relation case and a theorem of Euler, 4.2. 1-variable, ¦I¦-relation case, 4.3. Symmetric expansions andn-algebras, 4.4.n-variable,n-relation case where the base ring contains the rational number field, 4.5.n-variable, ¦I¦-relation case where the base ring contains the rational number field, 4.6.n-variable,n-relation case where 2 is a unit, the relations are quadratic and the Jacobian determinant is in the base ring; 5.Applications to the Jacobian Problem; 5.1. Brief history, 5.2. Interpretations of the Jacobian condition, 5.3. Consequences of flatness, 5.4. Equivalent conditions under separability, 5.5. Pseudo-inverse polynomials, 5.6. Counter-examples, 5.7. Quadratic case.