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math.RT2026
The associated graded algebras of biserial fractional Brauer graph algebras
Jing Guo, Nengqun Li, Yuming Liu
For any finite-dimensional algebra , one can associate a graded algebra (denoted by ) with the radical filtration of . An interesting question is to compare t…
math.RA2026
On Dual Algebras of Hopf Algebroids
Jingbang Guo
We study the dual algebras of (discrete) Hopf algebroids. In particular, we understand comodules over a Hopf algebroid as (discrete) modules over its dual algebra.