@article{Zhang2022, 
author = {Min Zhang and Fei Xue and Jinjiang Li},
title = {On the Waring–Goldbach problem for two squares and four cubes},
year = {2022},
journal = {AIMS Mathematics},
volume = {7},
number = {7},
pages = {12415-12436},
keywords = {Waring–Goldbach problem, Hardy–Littlewood method, sieve method, almost–prime},
url = {https://www.sciopen.com/article/10.3934/math.2022689},
doi = {10.3934/math.2022689},
abstract = {Let              P        r   denote an almost–prime with at most    r prime factors, counted according to multiplicity. In this paper, it is proved that for every sufficiently large even integer    N, the following equation     N  =      p    1    2    +      p    2    2    +      x    3    +      p    3    3    +      p    4    3    +      p    5    3  is solvable with    x being an almost–prime              P        7   and the other variables primes. This result constitutes a deepening upon that of previous results.}
}