3 papers
math.NT2026
A density version of quaternary Goldbach problem
Xiaoyang Hu, Meng Gao
Let denote the set of all primes, and let denote the relative lower density of a subset in . Suppose that are…
math.GR2026
Finite basis problem for involution semigroups of order four
Meng Gao, Wen Ting Zhang, Yan Feng Luo
Recently, we have found a non-finitely based involution semigroup of order five. It is natural to question what is the smallest order of non-finitely based involution semigroups. I…
math.NT2026
On the quadratic Waring-Goldbach problem with primes in Piatetski-Shapiro sets
Meng Gao, Jinjiang Li, Linji Long +1
In this paper, it is proved that, for any , every sufficiently large integer subject to can be represented as…