On sums of squares of primes II
On sums of squares of primes II
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DOI:
10.1016/j.jnt.2010.03.010
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发表时间:
2009-02
影响因子:
0.7
通讯作者:
G. Harman;A. Kumchev
中科院分区:
文献类型:
--
作者:
G. Harman;A. Kumchev
In this paper we continue our study, begun in G. Harman and A.V. Kumchev (2006) [10], of the exceptional set of integers, not restricted by elementary congruence conditions, which cannot be represented as sums of three or four squares of primes. We correct a serious oversight in our first paper, but make further progress on the exponential sums estimates needed, together with an embellishment of the previous sieve technique employed. This leads to an improvement in our bounds for the maximal size of the exceptional sets.