发表机构
Northwest University(西北大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文针对分级顶点算子余代数,构造可容许余模的逆步余模与余交织算子,通过泛性质定义余张量分解,并证明其复化Grothendieck群为余交换余结合余代数,且对偶于对偶顶点算子代数的融合代数。
AI 中文摘要
设 $V$ 为分级顶点算子余代数,$\mathcal{C}$ 为可容许 $V$-余模的范畴。我们首先给出可容许 $V$-余模的逆步余模的构造。然后,我们引入可容许 $V$-余模之间的余交织算子。利用余交织算子,我们通过泛性质定义了可容许 $V$-余模的余张量分解。最后,我们证明复化 Grothendieck 群 $\mathbb{K}[\mathcal{C}]=\mathbb{C}\otimes_{\mathbb{Z}}K[\mathcal{C}]$ 是一个余交换余结合余代数。此外,该余代数自然对偶于对偶顶点算子代数 $V'$ 上可容许模范畴的融合代数。
英文摘要
Let $V$ be a graded vertex operator coalgebra and $\mathcal{C}$ the category of admissible $V$-comodules. We first give the construction of contragredient comodule of an admissible $V$-comodule. We then introduce cointertwining operators among admissible $V$-comodules. Using cointertwining operators, we define the cotensor decomposition of an admissible $V$-comodule by a universal property. Finally, we prove that the complexified Grothendieck group $\mathbb{K}[\mathcal{C}]=\mathbb{C}\otimes_{\mathbb{Z}}K[\mathcal{C}]$ is a cocommutative coassociative coalgebra. Moreover, this coalgebra is naturally dual to the fusion algebra of the category of admissible modules over the dual vertex operator algebra $V'$.