The NSF (9452902001003278, 10452902001005845) of Guangdong Province.The author is grateful to Professors Shi Zhong-rui, Fu Jun-yi and Gong Xun-hua for their helps.
<正> For an integer n≥2,we say that an operator A is an n-idempotent ifA~n=A;A is a generalized n-idempotent if A~n=A~*;A is a hyper-generalized n-iclempotent
<正>In this paper, we investigate the description of T-B singularity and the bifurcation behavior near T-B point for delay differential systems with two paramet