R Balasubramanian - On warning's problem : g (4) < 21

hrj:643 - Hardy-Ramanujan Journal, January 1, 1979, Volume 2 - 1979 - https://doi.org/10.46298/hrj.1979.643
On warning's problem : g (4) < 21Article

Authors: R Balasubramanian 1

We prove that every natural number is a sum of at most 21 fourth powers of integers. This improves the corresponding result of H. E. Thomas, Jr. where 21 is replaced by 22. Using Vinogradov's version of the Hardy-Littlewood circle method, a careful estimation of the singular series and of the trigonometric sums by means of ideas of Ch'en-Ching Jun leads to the above result.

https://doi.org/10.46298/hrj.1979.643
Source: HAL:hal-01103845v1
Volume: Volume 2 - 1979
Published on: January 1, 1979
Imported on: April 9, 2015
Keywords: singular series.,Hardy-Littlewood circle method,sum of fourth powers,[MATH]Mathematics [math]

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