报告题目 (Title)：Integer flows of signed graphs
报 告 人 (Presenter)：陆由教授Professor Lu, You (西北工业大学Northwestern Polytechnical University)
报告时间 (Date)：2018.5.18, from 3:30 to 4:30 pm
摘要 (Abstract)：The well-known Bouchet’conjecture is that every flow-admissible signed graph admits a nowhere-zero integer 6-flow. Up to now, it remains open, although it has been extensively researched and studied. In this talk, I will give a simple survey on this conjecture, and present our progress on this topic.