令ρ3(n)=∑n=|m|^3-|t|^3,(m,t)=11.本文研究了和式R3(x)=∑n≤xρ3(n)=A3x^2/3+B3x^1/2+E3(x),并且在黎曼假设下,得到E3(x)=O(x^4/15+ε),从而进一步改进了前人的结果.
Let ρ3(n)=∑n=|m|^3-|t|^3,(m,t)=1 1. In this paper we study the sum R3(x)=∑n≤xρ3(n)=A3x^2/3+B3x^1/2+E3(x), and we shall prove that if the Riemman Hypothesis (RH) is true, then E3(x) = O(x^4/15+ε), which improves the previous result.