TITLE: 
                        
                            Relationships among Three Multiplicities  of a Differential Operator’s Eigenvalue
                                
                                
                                    AUTHORS: 
                                            Shouzhong Fu, Zhong Wang 
                                                    
                                                        KEYWORDS: 
                        Differential Operators, Eigenvalue, Algebraic Multiplicities, Geometric Multiplicities, Analytic  Multiplicities 
                                                    
                                                    
                                                        JOURNAL NAME: 
                        Applied Mathematics,  
                        Vol.5 No.15, 
                        August
                                                        5,
                        2014
                                                    
                                                    
                                                        ABSTRACT: In this paper, the algebraic, geometric and analytic multiplicities of
an eigenvalue for linear differential operators are defined and classified. The
relationships among three multiplicities of an eigenvalue of the linear
differential operator are given, and a fundamental fact that the algebraic,
geometric and analytic multiplicities for any eigenvalue of self-adjoint
differential operators are equal is proven.