我们知道以下内容:
$$\颜色{红色}{{x_1}^2+{x_2}^2-2x_1x_2}=\颜色{蓝色}{(x_1-x_2)^2}$$
$$\颜色{红色}{{x_1}^3+{x_2}^3+{x_3}^3-3x_1x_2x_3}$$$$=\压裂{1}{2}$$
我一直对推广这些身份感兴趣。然后,我得到了以下信息:
$$\颜色{红色}{{x_1}^4+{x_2}^4+{x_3}^4+/{x_4}^4-4x_1x_2x_3x_4{$$$$=压裂{1}{6}\左(2({x_1}^2+x_1x_2+{x_2}^2)+(x_1+x_2)(x_3+x_4)+2x_3x_4\右)\颜色{蓝色}{(x_1-x_2)^2}$$$$+\frac{1}{6}\左(2({x_1}^2+x_1x_3+{x_3}^2)+(x_1+x_3)(x_2+x_4)+2x_2x_4\右)\颜色{蓝色}{(x_1-x.3)^2}$$$$+\frac{1}{6}\ left(2({x_1}^2+x_1x_4+{x_4}^2)+(x_1+x_4)(x_2+x_3)+2x2x_3\ right)\ color{blue}{(x_1-x_4)^2}$$$$+\frac{1}{6}\左(2({x_2}^2+x_2x_3+{x_3}^2)+(x_2+x_3)(x_1+x_4)+2x_1x_4\右)\颜色{蓝色}{(x_2-x.3)^2}$$$$+\压裂{1}{6}\左(2({x_2}^2+x_2x_4+{x_4}^2)+(x_2+x_4)(x_1+x_3)+2x_1x_3\右)\颜色{蓝色}{(x_2-x_4$$$$+\压裂{1}{6}\左(2({x_3}^2+x_3x_4+{x_4}^2)+(x_3+x_4)(x_1+x_2)+2x_1x_2\右)\颜色{蓝色}{(x_3-x_4$$
$$\颜色{红色}{x_1}^5+{x_2}^5+{x_3}^5+{x_4}^5+{x_5}^5-5x_1x_2x_3x_4x_5}$$$$\小=F{1,2}\颜色{蓝色}{(x_1-x_2)^2}+F{1,3}\颜色}蓝色}}{$$$$\小+F{2,4}\颜色{蓝色}{(x_2-x_4)^2}+F{2,5}\颜色}蓝色}}{$$哪里$12F{1,2}=3({x_1}^3+{x_1{^2{x_2}+{x_1}{x_2}^2+{x_2{^3)+$$
$12F{1,3}=3({x_1}^3+{x_1{^2{x_3}+{x_1}^2+{x_3{^3)+({x_1}^2+{x_1}{x_3}+{x_3}^2)(x_2+x_4+x_5)+(x_1+x_3)(x_4+4x_5+x_5x_2)+3x_2x_4x_5$$$12F{1,4}=3({x_1}^3+{x_1{^2{x_4}+{x_1}{x_4}^2+{x_ 4}^3)+({x_1}^2+{x_1}{x_4}+{x_4]^2)(x_2+x_3+x_5)+(x_1+x_4)(x_2x_3+x_5+x_5x_2)+3x_2x_3x_5$$
$12F{1,5}=3({x_1}^3+{x_1{^2{x_5}+{x_1}{x_5}^2+{x~5}^3)+({x_1}^2+{x_1}{x5}+{x_5%}^2)(x_2+x_3+x_4)+(x_1+x_5)$$$12F{2,3}=3({x_2}^3+{x_2{^2{x_3}+{x_2}{x_3}^2+{x_3{^3)+({x_2{^2+}{x_3}+{x_3}^2)(x_1+x_4+x_5)+(x_2+x_3)(x_4+4x_5+x_5x_1)+3x_1x_4x_5$$$12F{2,4}=3({x_2}^3+{x_2{^2{x_4}+{x_2}^2+{x_4}^3)+({x_2{^2+{x_2}{x_4]+{x_3}^2)(x_1+x_3+x_5)+(x_2+x_4)(x_1x_3+x_5+x_5x_1)+3x_1x_3x_5$$$12F{2,5}=3({x_2}^3+{x_2{^2{x_5}+{x_2}{x_5}^2+{x_5%}^3)+({x_2{^2+}x_2}{x_5A}^2)(x1+x_3+x_4)+(x_2+x_5)(x_1x_3+x_5)$$$12F{3,4}=3({x_3}^3+{x_3{^2{x_4}+{x_3}{x_4}^2+{x_ 4}^3)+({x_3}^2+{x_3}{x_4}+{x_4]^2)(x_1+x_2+x_5)+(x_3+x_4)(x1x_2+x2x_5+x_5x_1)+3x_1x_2x_5$$$12F{3,5}=3({x_3}^3+{x_3{^2{x_5}+{x_3}{x_5}^2+{x~5}^3)+({x_3}^2+{x_3}{x5}+{x_5%}^2)(x_1+x_2+x_4)+(x_3+x_5)(x1x_2+x2x_4+x_4x1)+3x_1x_2x_4$$$12F{4,5}=3({x_4}^3+{x_4]^2{x_5}+{x_4}{x_5}^2+{x_ 5}^3)+({x_ 4}^2+{x_4/{x_6}{x5}^2)(x1+x_2+x_3)+(x_4+x_5)(x_1x_2+x_5)$$在这里,我有一个猜测。
问题:以下猜测是真的吗?
猜想:对于任何$n\(\ge 2\in\mathbb n)$变量$x_1,\cdot,x_n$,如下所示。
$$\sum_{i=1}^{n}{x_i}^n-n\prod_{i=1{^{n} x _ i=sum{1\lei\ltj\len}(x_i-x_j)^2\sum{k=0}^{n-2}\frac{left(sum{m=0}^{k}{x_i}^m{x_j}^{k-m}\right)\cdot s{n-2,n-2-k}(not=x_i,x_j$$
哪里$s_{n-2,n-2-k}(not=x_i,x_j)=s_{n-2,n-2k}$和$s_{n,k}(x_1,\cdots,x_n)$是$\binom{n}{k}$每种产品千美元$元素选择自$\{x_1,\cdot,x_n\}$具有$s_{n,0}(x_1,\cdots,x_n)=1$.
我已经检查过这是真的$n=2,3,4,5,6$和$7$,但我没有任何好主意来证明这一点。有人能帮忙吗?