On the Universal Central Extension of Hyperelliptic Current Algebras
On the Universal Central Extension of Hyperelliptic Current Algebras
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DOI:
10.1090/proc/13057
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发表时间:
2015-03
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通讯作者:
B. Cox
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文献类型:
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作者:
B. Cox
Let $p(t)\in\mathbb C[t]$ be a polynomial with distinct roots and nonzero constant term. We describe, using Fa\'a de Bruno's formula and Bell polynomials, the universal central extension in terms of generators and relations for the hyperelliptic current Lie algebras $\mathfrak g\otimes R$ whose coordinate ring is of the form $R=\mathbb C[t,t^{-1},u\,|\, u^2=p(t)]$.