On certain properties of harmonic numbers On certain properties of harmonic numbers. Let Hn be the n -th harmonic number and let un be its numerator. For any prime p , let Jp be the set of positive integers n with p|un. In 1991, Eswaratha... On the Erdős-Turán conjecture On the Erdős-Turán conjecture - Tang, Min*
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Anhui Normal University, China... Physical Chemistry Research Toward Proton Exchange Membrane Fuel Cell Advancement In this video, Karen E. Swider-Lyons, from the Naval Research Laboratory, and Stephen A. Campbell, from the Automotive Fuel Cell Cooperation Corp., discuss their Perspective published in issue 3 of th... Created and maintained by Ryan Watkins (2013-present)
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