4 papers
Examples of scalar extension Hopf algebroids over a universal enveloping algebra
Martina Stojić, Zoran Škoda
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…
Internal Hopf algebroid
Martina Stojić
We introduce a natural generalization of the definition of a symmetric Hopf algebroid, internal to any symmetric monoidal category with coequalizers that commute with the monoidal…
Enveloping algebra is a Yetter--Drinfeld module algebra over Hopf algebra of regular functions on the automorphism group of a Lie algebra
Zoran Škoda, Martina Stojić
We present an elementary construction of a (highly degenerate) Hopf pairing between the universal enveloping algebra of a finite-dimensional Lie algebra $\mathfra…
Comment on "Twisted bialgebroids versus bialgebroids from Drinfeld twist"
Zoran Škoda, Martina Stojić
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…