Goldbach Theorem3 g# P' }. l! ?) @
Union of set construction and analysis3 g4 I" \5 l* I, A" c; }
% L$ z/ ^- ]# H, J+ D' t. R% J Loudi Xiaoguang mathematical research studio Su Xiaoguang 7 y) }( W; G! Z7 Q" r; [ Abstract: In the analytic number theory Goldbach problem is an important issue. The authors studied the:A={N │ N = (N-i) + i, N is a natural number, i belong to N} Clearly A is a countable set。C={N │ N = Pi + Pj, N is even number, Pi, Pj is prime number,i, j is natural number} Clearly, C is A subset。So C is a countable set.If x ={x|x no less than 6 and not more than N is an even number,x=P1+P2, P1, P2 is prime number},card (x)=M (x).Clearly, x is C subset。So x is a countable set.We can get the M(x) range,If N ={N|N = P1 + P2, N is even number, P1, P2 is prime number},card (N)=D(N),D(N)=M(N)-M(N-2)+ n2 [2 v8 p8 B9 E' w9 q
So when N> 800000 when, D(N)No less than1.8432(1-1/logN)N/log^2_(N-2);I+ |& ]: U Y5 v4 f/ c; A
Not more than5.0176[1+2/logN +o(1)]N/log[(N-2)/2]log(N-2)。 ; |% G- F( P& K" s4 k) EKey words: Germany,Goldbach,Union of set,even number, prime number, 7 A. u# I6 U7 G+ p# r8 ~& iMR (2000) theme classification: 11 P32 ! u4 `/ T1 X2 e; F) }
Email:suxiaoguong@foxmail. Com