3 papers
math.QA2025
Enveloping algebra is a Yetter--Drinfeld module algebra over Hopf algebra of regular functions on the automorphism group of a Lie algebra
Zoran Å koda, Martina StojiÄ
We present an elementary construction of a (highly degenerate) Hopf pairing between the universal enveloping algebra of a finite-dimensional Lie algebra $\mathfra…
math.QA2025
Examples of scalar extension Hopf algebroids over a universal enveloping algebra
Martina StojiÄ, Zoran Å koda
We present several related examples of Hopf algebroids over a universal enveloping algebra which are of the scalar extension Hopf algebroid type and explain their origin in Lie and…
math.QA2024
Comment on "Twisted bialgebroids versus bialgebroids from Drinfeld twist"
Zoran Å koda, Martina StojiÄ
A class of left bialgebroids whose underlying algebra is a smash product of a bialgebra with a braided commutative Yetter--Drinfeld -algebra has recently bee…