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《College Mathematics》 2015-01
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Annotations on the Product of Infinite Infinitesimals

MA Jin-juan;ZHENG Ting;YAO Xiao-peng;Mathematics and Statistics Faculty of Zhejiang Gong Shang University;  
Document[1,2,3]set counterexamples to prove the product of infinite infinitesimals not necessarily to be infinitesimal.This article primarily questions the reasonability of the three counterexamples.
【Fund】: 浙江省自然科学基金项目(Y1111039)
【CateGory Index】: O171-4;G642
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