42 citations · 111 across the 12 of their papers we have counts for
4 papers · 1 filter
A note on the discriminant of reflection Hopf algebras
Ruipeng Zhu
We provide a formula for commputing the discriminant of skew Calabi-Yau algebra over a central Calabi-Yau algebra. This method is applied to study the Jacobian and discriminant for…
Instanton counting and O-vertex
Satoshi Nawata, Rui-Dong Zhu
We present closed-form expressions of unrefined instanton partition functions for gauge groups of type as sums over Young diagrams. For gauge groups, we prov…
Derived equivalences for a class of PI algebras
Quanshui Wu, Ruipeng Zhu
A description of tilting complexes is given for a class of PI algebras whose prime spectrum is canonically homeomorphic to the prime spectrum of its center. Some Sklyanin algebras…
Some invariant subalgebras are graded isolated singularities
Ruipeng Zhu
In this note, we prove that the invariant subalgebra of the (-1)-skew polynomial algebra under a permutation action is a graded isolated singularity, and thus a conjecture of Chan-…