Happel's question, Han's conjecture and $\tau$-Hochschild (co)homology

Claude Cibils, Marcelo Lanzilotta, Eduardo N. Marcos +1

We introduce the $\tau$-Hochschild (co)homology of a finite dimensional associative algebra $\Lambda$ by means of the higher Auslander-Reiten translate of O. Iyama. We show that the global…