»ã±¨±êÌâ (Title)£ºSome extremal problems: Surrounding certain substructures in bipartite graphs £¨Èô¸É¼«ÖµÎÊÌ⣺¹ØÓÚ¶þ²¿Í¼µÄ×ӽṹ£©

»ã±¨ÈË (Speaker)£ºÀîÊ鳬 ½ÌÊÚ£¨»ªÖÐʦ·¶´óѧ£©

»ã±¨¹¦·ò (Time)£º2024Äê9ÔÂ12ÈÕ(ÖÜËÄ) 14:00

»ã±¨µØÖ· (Place)£ºÌÚѶ»áÒé 631-100-083

Ô¼ÇëÈË(Inviter)£ºÑîٻٻ

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»ã±¨ÌáÒª£ºThe Tur¨¢n-type problem is a fundamental problem in extremal graph theory. Naturally, the reverse version of the above problem is to characterize the existence of some substructure in a graph. These problems attract more and more researchers¡¯ attention. In this talk£¬we first introduce some background in this fields. Then we give some new results of ours on the above two types of problems. At last we will propose some further research problems along this line. This is a joint work with Yifang Hao and Shujing Miao.