Weak Galois and Weak Cocleft Coextensions

• 来源期刊: 代数集刊（英文版）
• 关键词: weak entwining structure weak Galois coextension weak coclef coextension weak Hopf algebra
• 年，卷（期）: 2007,（2）
• 页码范围: 229-244
• 页数: 16页
• 语种: 英文

摘要

For a weak entwining structure (A, C,ψ) living in a braided monoidal category with equalizers and coequalizers, we formulate the notion of weak A-Galois coextension with normal basis and we show that these Galois coextensions are equivalent to the weak A-cocleft coextensions introduced by the authors.