报告题目 (Title)：有限半格的同态-同质性 (The homomorphism-homogeneity of finite semilattices)
报告人 (Speaker)：杨丹丹（西安电子科技大学）
报告时间 (Time)：2026年5月7日(周四) 15:30
报告地点 (Place)：校本部F309
邀请人(Inviter)：张红莲
主办部门：理学院数学系
报告摘要：A countable structure A is said to be homomorphism-homogeneous if every homomorphism between its finitely generated substructures extends to an endomorphism of A. In this talk, I will give a complete and explicit classification of homomorphism-homogeneous finite semilattices, addressing an open problem posed by Dolinka and Masulovic in 2011. This is joint work with W. Yang.