Project supported in part by the Fundamental Research Funds for the Central Universities(No. 2010HGBZ0603);by NSFC(No.11071186 and No.11201107)
本文证明了如果λ_1,λ_2,…,λ_8为不全同号的非零实数,其中λ_1/λ_2为无理数,则对任意实数κ及0<σ<1/8,不等式|λ_1x_1~2+λ_2x_2~2+sum ( λ_ix_i^4+κ) from i=3 to 8|<(max 1≤i≤8 xi)^(-σ)有无穷多组整数解(x_1,x_2,…,x_8).
Supported by the NNSF of China(11071186);Supported by the Science Foundation for the Excellent Youth Scholars of Shanghai(ssc08017);Supported by the Doctoral Research Fund of Shanghai Ocean University
In this paper a zero-density estimate of the large sieve type is given for the automorphic L-function L f (s,χ),where f is a holomorphic cusp form and χ a Dirichlet character of mod q.
Project supported by the National Natural Science Foundation of China(No.11071186);the Science Foundation for the Excellent Youth Scholars of Shanghai(No.ssc08017);the Doctoral Research Fund of Shanghai Ocean University
Let N be a sufficiently large even integer.Let p denote a prime and P2 denote an almost prime with at most two prime factors.In this paper,it is proved that the equation N = p + P2(p ≤ N0.945) is solvable.