摘要: By introducing a parameter a,we give an extension of Van der Corput's inequal- ity.Also a new strengthened version of it is considered.
                                                        
                              
                             
                            
                            																								
								
																中图分类号: 
																 
								
								
																                            
                            
                                
                                    
                                
                                
                                    
                                        															杨必成. 关于Van der Corput不等式的一个推广及改进[J]. 数学季刊, 2007, 22(1): 94-98.	
																																									     												                                                                                                        	                                                                                                                      YANG Bi-cheng. On an Extension and a Refinement of Van der Corput's Inequality[J]. Chinese Quarterly Journal of Mathematics, 2007, 22(1): 94-98.