On the Waring-Goldbach Problem for Six Cubes and Two Biquadrates

Citation:

Sanying SHI,Li LIU.On the Waring-Goldbach Problem for Six Cubes and Two Biquadrates[J].Chinese Annals of Mathematics B,2018,39(6):1033~1046
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Authors:

Sanying SHI; Li LIU

Foundation:

This work was supported by the National Natural Science Foundation of China (No.11201107) and the China Scholarship Council.
Abstract: Let $P_r$ denote an almost prime with at most $r$ prime factors, counted according to multiplicity. In the present paper, it is proved that for any sufficiently large even integer $n$, the equation $$ n=x^3+p_1^3+p_2^3+p_3^3+p_4^3+p_5^3+p_6^4+p_7^4$$ has solutions in primes $p_i$ with $x$ being a $P_6$. This result constitutes a refinement upon that of Hooley C.

Keywords:

Waring-Goldbach problem, Hardy-Littlewood method, Sieve theory

Classification:

11P32, 11N36
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