Renormalized Hennings Invariants and 2+1-TQFTs

Marco De Renzi, Nathan Geer, Bertrand Patureau-Mirand

We construct non-semisimple $2+1$-TQFTs yielding mapping class group representations in Lyubashenko's spaces. In order to do this, we first generalize Beliakova, Blanchet and Geer'…