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Abstract
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image)
In the article, we prove that the double inequality ...... holds for ...... with ...... if and only if ...... and ......, where ......, ...... and ...... denote the Neuman-Sándor, logarithmic and second Seiffert means of two positive numbers a and b, respectively.
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1 School of Mathematical Science, Anhui University, Hefei, China





