论文标题
正态操作员的力量
Powers of posinormal operators
论文作者
论文摘要
正态正态操作员的平方不一定是正常$。$。$，但（i）准上骨算子的能力是准上骨的力量，是准上骨的正常，并且在封闭的范围内，（ii）正常操作员的功率是正常正常的功能，是操作员的（iii），（iii）是（iii）的（iii），（iii）是巨大的和cososinormal and coposinormal and Coposinormal and Coposinormal and-forsinormal selormal selormal sormantoral stormantral sormantralsoral，且（正态算子是正常的。
Square of a posinormal operator is not necessarily posinormal$.$ But (i) powers of quasiposinormal operators are quasiposinormal and, under closed ranges assumption, powers of (ii) posinormal operators are posinormal, (iii) of operators that are both posinormal and coposinormal are posinormal and coposinormal, and (iv) of semi-Fredholm posinormal operators are posinormal.
