题目: Signed circuit covers of signed graphs
报告人: Professor Rong Luo (West Virginia University, USA )
报告时间: 12月17号下午4:30-5:30
地点: 1418
摘要:
It is known that a signed graph G has a signed circuit cover if and only if it is sbridgeless where a signed
circuit cover of G is a family F of signed circuits such that each edge of G belongsto at least one member of F.
Recently, Macajova et al. proved that every s-bridgeless signed graph G has a signed circuit cover with length at most 11|E(G)|.
Recently we improve the result of Macajova et al. from 11|E(G)| to 14/3|E(G)|.