In this paper, we prove that each sufficiently large integer N ≠1(mod 3) can be written as N=p+p1^2+p2^2+p3^2+p4^2, with|p-N/5|≤U,|pj-√N/5|≤U,j=1,2,3,4,where U=N^2/20+c and p,pj are primes.
In this paper we prove that, with at most O(N^5/12+ε) exceptions, all positive odd integers n ≤ N with n ≡ 0 or 1(mod 3) can be written as a sum of a prime and two squares of primes.
基金the National Natural Science Foundation of China (Grant No.10701048)
文摘In this paper, we prove that each sufficiently large integer N ≠1(mod 3) can be written as N=p+p1^2+p2^2+p3^2+p4^2, with|p-N/5|≤U,|pj-√N/5|≤U,j=1,2,3,4,where U=N^2/20+c and p,pj are primes.
基金Project supported by National Natural Science Foundation(No. 90304009)Foundation of Qufu Normal University for Ph.D.
文摘In this paper we prove that, with at most O(N^5/12+ε) exceptions, all positive odd integers n ≤ N with n ≡ 0 or 1(mod 3) can be written as a sum of a prime and two squares of primes.