3 papers
math.CO2022
A note on the Tuza constant for small
Yun-Shan Lu, Hung-Lung Wang
For a hypergraph , the transversal is a subset of vertices whose intersection with every edge is nonempty. The cardinality of a minimum transversal is the transversal number of…
math.LO2011
Reducts of the Generalized Random Bipartite Graph
Yun Lu
Let Γbe the generalized random bipartite graph that has two sides Rl and Rr with edges for every pair of vertices between R1 and Rr but no edges within each side, where all the edg…
math.LO2011
Reducts of the random bipartite graph
Yun Lu
Let be the random bipartite graph, a countable graph with two infinite sides, edges randomly distributed between the sides, but no edges within a side. In this paper, we invest…