摘要: 
In this paper, the extreme points of the unit ball of diagonal-disjoint ideals I in nest algebras are characterized completely; Furthermore, it is shown that every extreme point of the unit ball of I has essential-norm one.
                                                        
                            
                            																											
											
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                                        															董浙, 鲁世杰. EXTREME POINTS IN DIAGONAL-DISJOINT IDEALS OF NEST ALGEBRAS[J]. 数学物理学报(英文版), 2002, 22(2): 222-226.	
																																									     												                                                                                                        	                                                           DONG Zhe, LU Shi-Jie. EXTREME POINTS IN DIAGONAL-DISJOINT IDEALS OF NEST ALGEBRAS[J]. Acta mathematica scientia,Series B, 2002, 22(2): 222-226.