| 摘要: | 
	         
			 
		     | 本文研究了随机延迟微分方程的平衡方法的收敛性和均方稳定性. 利用半鞅收敛定理, 给出了真解的渐进稳定和均方稳定的一个更弱的条件. 平衡方法下随机延迟微分方程的真解的均方稳定性. | 
	         
			
	         
				| 关键词:  平衡方法  随机延迟微分方程  收敛性  均方稳定性  渐进稳定性 | 
	         
			 
                | DOI: | 
           
            
                | 分类号:O29 | 
             
			 
             
                | 基金项目:Supported by NNSF (70871046) and HUST Foundation (0125011017). | 
             
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                | CONVERGENCE AND STABILITY OF NUMERICAL METHODS FOR STOCHASTIC DIFFERENTIAL DELAY EQUATION | 
           
           
			
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				CHENG Sheng-min1, ZHOU Shao-bo2
						
				
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				1.Department of Basic Teaching, Zhengzhou Huaxin College, Xinzheng 451100, China;2.School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, China
				
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                | Abstract: | 
              
			
                | The paper investigates convergence and mean-square stability of the balanced method for stochastic differential delay equation. By applying the semi-martingale convergence theorem, a weaker condition of asymptotic and mean-square stability of the exact solution is given, the balanced method reproduces mean-square stability of the exact solution for stochastic differential delay equation. | 
            
	       
                | Key words:  balanced method  stochastic differential delay equation  convergence  mean-square stability  asymptotic stability |