3 papers
math.AC2021
Frobenius Categories over a Triangular Matrix Ring and Comma Categories
Dancheng Lu, Panpan Xie
We introduce the dual notions of and , and investigate when they have enough injective objects or p…
math.AC2016
Finite lattices and Koszul Filtrations
Dancheng Lu, Ke Zhang
We characterize when a finite lattice is distributive by the existences of some particular classes of Koszul filtrations.
math.AC2014
Partial regularities and -invariants of Borel type ideals
Dancheng Lu, Lizhong Chu
We express the Partial regularities and -invariants of a Borel type ideal in terms of its irredundant irreducible decomposition. In addition we consider the behaviours of thos…