② if x > y, y > z；; Then x > z；;

③ if x > y and z are arbitrary real numbers, then x+z > y+z;

④

If x > y and z > 0, then xz > yz.

⑤ if x > y and z < 0, then xz < yz.

Attribute 1: If a >；; B, b>c, then a>c (transitivity of inequality).

Attribute 2: If a>b, then A+C > B+c (additivity of inequality).

Attribute 3: If a>b, c>0, then ac> BC; If a>b, cd, and then A+C > b+d。

Attribute 5: If a>b>0, c>d>0, then ac & gtbd.

Attribute 6: if a>b>0, n∈N, n> 1, then an & gtbn,