Representations of quantum groups defined over commutative rings II

On Coreflexive Coalgebras and Comodules over Commutative Rings

In this note we study dual coalgebras of algebras over arbitrary (noetherian) commutative rings. We present and study a generalized notion of coreflexive comodules and use the results obtained for them to characterize the so called coreflexive coalgebras. Our approach in this note is an algebraically topological one.

交换多项式环上斜PBW扩张的光滑几何 I

Smooth geometry of skew PBW extensions over commutative polynomial rings I

研究交换多项式环上斜PBW扩张的微分光滑性，针对一个和两个不定元情形。