2 papers
math.KT2025
Corings, their dual rings and relative (co)Hochschild cohomology
Jonathan Lindell
We show for a coring which is finitely generated projective as a left module that the Cartier cohomology is isomorphic to the relative Hochschild cohomology of the right algebra. F…
math.RT2024
On the first relative Hochschild cohomology and contracted fundamental group
Jonathan Lindell, Lleonard Rubio y Degrassi
In this paper we investigate the Lie algebra structure of the first relative Hochschild cohomology and its relation with the relative notion of fundamental group. Let be fini…