摘要: In this paper,the authors discuss the relationship in detail between the rank of M in the modified matrix M=A+BC* and the rank of matrix A.The authors do believe the results are useful tools in the modified matrices.
                                                        
                              
                             
                            
                            																								
								
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                                        															盛兴平, 陈果良. 秩2修正矩阵的秩[J]. 数学季刊, 2007, 22(3): 352-358.	
																																									     												                                                                                                        	                                                                                                                       SHENG Xing-ping, CHEN Guo-liang. The Rank of Rank-2 Modified Matrix[J]. Chinese Quarterly Journal of Mathematics, 2007, 22(3): 352-358.