Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:	马杰教授，中国科学技术大学数学学院
Inviter:	交叉中心
Title:	Extremal results on 4-cycles
Language:	Chinese
Time & Venue:	2022.12.06 16:00-17:00 腾讯会议：178-297-907
Abstract:	The study of the 4-cycle has an important enlightening effect on the development of Turan type problems, especially the degenerate cases. In this talk, we focus on two conjectures about 4-cycles: a conjecture of Erdos on the upper bound of the Turan number ex(n,C_4), and a conjecture of Erdos-Simonovits on the supersaturation problem of 4-cycles. Joint with Tianchi Yang.