3 papers
math.CO2026
Level of Faces for Exponential Sequence of Arrangements
Yanru Chen, Houshan Fu, Weikang Liang +1
In this paper, we introduce the bivariate exponential generating function for the number of level- faces of an exponential sequence of arrangements (ESA), and establi…
math.CO2024
Characterizing Nice Partition of Graphical Arrangements
Weikang Liang, Suijie Wang, Chengdong Zhao
The successive works of Terao as well as Stanley revealed that, for graphical arrangements, supersolvability and the existence of nice partitions are equivalent properties, both ch…
math.CO2024
-Adjoint of Hyperplane Arrangements
Weikang Liang, Suijie Wang, Chengdong Zhao
In this paper, we introduce the -adjoint of a given hyperplane arrangement associated with rank- elements in the intersection lattice , which ge…