Goldbach Theorem 1 M& _9 F+ \6 U" l0 y Union of set construction and analysis t2 c- K+ ^. l
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Loudi Xiaoguang mathematical research studio Su Xiaoguang% i" p1 f' e$ F! E
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) & F- w2 W8 W+ v( l5 u1 NSo when N> 800000 when, D(N)No less than1.8432(1-1/logN)N/log^2_(N-2);I + m: W. X1 P3 {$ Y4 aNot more than5.0176[1+2/logN +o(1)]N/log[(N-2)/2]log(N-2)。 1 A R0 O' |, |4 d7 D1 IKey words: Germany,Goldbach,Union of set,even number, prime number, / B+ l. {: m% t+ l0 `$ j2 o1 h! E
MR (2000) theme classification: 11 P32 % p. s; {; D5 }- `1 q1 T+ a
Email:suxiaoguong@foxmail. Com
Goldbach formula:& g5 K# I9 F, h& Z
1.8432(1-1/log N)N/log(N-2)log(n-2)<D(N)<2.5088 S(N)N/[log(N-2)/2][log(N-2)/2]. C" R U0 Q* a
For N>800000,D(N) mean ) c$ w$ a- }- F: B& Y p N=P_1+P_2# V: h+ {3 @, e5 L! K: o
The number of elements。prime number P_1,P_2>2。 : @6 ]$ o& m, A; _, B S(N)=1-(2 log 2 log 2)/[log(N-2)log(N-2)]-2{[ log(N-2)/2]log N(N-2)}/[2 log N log(N-2)log N/2] , x9 P; ?" a; \9 m( B0 S+ [ +[log N(N-2)/4]/[2 (log N/2)(log N/2)]/ b/ i- y% H1 I
+{2 [log(N-2)/2] [log(N-2)/2]log N(N-2)}/[log N log N log(N-2)log(N-2)]