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Extending lazy 2-cocycles on Hopf algebras and lifting projective representations afforded by them

Juan Cuadra·Florin Panaite
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Abstract

We study some problems related to lazy 2-cocycles, such as: extension of (lazy) 2-cocycles to a Drinfeld double and to a Radford biproduct, Yetter-Drinfeld data obtained from lazy 2-cocycles, lifting of projective representations afforded by lazy 2-cocycles.

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Juan Cuadra, Florin Panaite. 2004-12-21. Extending lazy 2-cocycles on Hopf algebras and lifting projective representations afforded by them. https://arxiv.org/abs/math/0412425

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