Goldbach Theorem& |5 p9 h; o5 x9 J: g
Union of set construction and analysis1 F! d+ A7 T3 ?+ I( q% k8 Y' O
Z ~* T, D0 N: X4 {4 o Loudi Xiaoguang mathematical research studio Su Xiaoguang6 p. z r3 Z! ~2 b. @
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) 1 u8 f' m3 j8 d9 uSo when N> 800000 when, D(N)No less than1.8432(1-1/logN)N/log^2_(N-2);I& ?- B3 N5 |. V8 `) N
Not more than5.0176[1+2/logN +o(1)]N/log[(N-2)/2]log(N-2)。 0 C5 v: s0 p0 p2 ]& H0 ?. W; l' `/ t2 VKey words: Germany,Goldbach,Union of set,even number, prime number, 3 Y9 D; @, S5 r8 ~! I
MR (2000) theme classification: 11 P32 - H( _8 H4 P2 a$ l4 j4 lEmail:suxiaoguong@foxmail. Com