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arXiv 1409.4002math.KTmath.QA
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量子包络代数的Hopf-循环上同调

Hopf-cyclic Cohomology of Quantum Enveloping Algebras

Atabey Kaygun, Serkan Sütlü

摘要:

本文计算了Drinfeld-Jimbo量子包络代数$U_q(\mathfrak{g})$的周期和非周期Hopf-循环上同调,其中,半单李代数$\mathfrak{g}$的系数是模对中的对合.我们证明了它的Hochschild上同调集中在由李代数$\mathfrak{g}$的秩决定的单次上.

英文摘要:

In this paper we calculate both the periodic and non-periodic Hopf-cyclic cohomology of Drinfeld-Jimbo quantum enveloping algebra $U_q(\mathfrak{g})$ for an arbitrary semi-simple Lie algebra $\mathfrak{g}$ with coefficients in a modular pair in involution. We show that its Hochschild cohomology is concentrated in a single degree determined by the rank of the Lie algebra $\mathfrak{g}$.

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