Derivations and spectral triples on quantum domains Ⅱ: Quantum annulus

• 来源期刊: 中国科学：数学（英文版）
• 年，卷（期）: 2019,（12）
• 页码范围: 2463-2486
• 页数: 24页
• 语种: 英文

摘要

Continuing our study of spectral triples on quantum domains,we look at unbounded invariant and covariant derivations in the quantum annulus.In particular,we investigate whether such derivations can be implemented by operators with compact parametrices,a necessary condition in the definition of a spectral triple.