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hep-th2022
Vertex algebras with big center and a Kazhdan-Lusztig Correspondence
Boris L. Feigin, Simon D. Lentner
Certain deformable families of vertex algebras acquire at a limit of the deformation parameter a large center, similar to affine Lie algebras at critical level. Then the vertex alg…
math.QA2022
Pointed Hopf algebras over non-abelian groups with non-simple standard braidings
Iván Angiono, Simon Lentner, Guillermo Sanmarco
We construct finite-dimensional Hopf algebras whose coradical is the group algebra of a central extension of an abelian group. They fall into families associated to a semisimple Li…