Abstract
We sharpen Hua’s result by proving that each sufficiently large odd integer N can be written as
, where p j are primes. This result is as good as what was previously derived from the Generalized Riemann Hypothesis.
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Lü, G.S., Xu, Y.F. Hua’s theorem with nine almost equal prime variables. Acta Math Hung 116, 309–326 (2007). https://doi.org/10.1007/s10474-007-6041-6
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DOI: https://doi.org/10.1007/s10474-007-6041-6