19 citations · 47 across the 17 of their papers we have counts for
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math.CO2018★ 4 cited
New bounds on the maximum size of Sperner partition systems
Yanxun Chang, Charles J. Colbourn, Adam Gowty +2
An -Sperner partition system is a collection of partitions of some -set, each into nonempty classes, such that no class of any partition is a subset of a class of any…
math.CO2018
Several classes of optimal Ferrers diagram rank-metric codes
Shuangqing Liu, Yanxun Chang, Tao Feng
Four constructions for Ferrers diagram rank-metric (FDRM) codes are presented. The first one makes use of a characterization on generator matrices of a class of systematic maximum…
math.CO2018★ 16 cited
Constructions for optimal Ferrers diagram rank-metric codes
Shuangqing Liu, Yanxun Chang, Tao Feng
Optimal rank-metric codes in Ferrers diagrams can be used to construct good subspace codes. Such codes consist of matrices having zeros at certain fixed positions. This paper gener…