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

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73664We 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.25 pagesQuantum AlgebraRings and Algebras16W30Extending lazy 2-cocycles on Hopf algebras and lifting projective representations afforded by themtext