Involutions on Classical Crossed Products over Global Fields

• 来源期刊: 代数集刊（英文版）
• 关键词: involution crossed product global field
• 年，卷（期）: 2002,（3）
• 页码范围: 345-349
• 页数: 5页
• 语种: 英文

摘要

If L/K is a finite Galois extension of the global field K with Galois group G, we denote by A = (L/K, α) the crossed product algebra of G over L,where α is the factor set of G. We give a criterion when A admits an involution of the first kind by which a characterization of the factor set is given.