递归生成的加权移位算子的二次亚正规性  

On Quadratically Hyponormal of Recursively Generated Weighted Shits

作　　者：董延武[1] 

机构地区：[1]湛江师范学院,广东湛江524300

出　　处：《廊坊师范学院学报（自然科学版）》2013年第2期17-21,共5页Journal of Langfang Normal University(Natural Science Edition)

摘　　要：对于含有两个未知数的递归生成的加权移位算子,Jung提出了其二次亚正规和正的二次亚正规是等价的。但如果细加论证可以发现,这个假设是不正确的,对此有具体的实例可以证明。For recursively generated weighted shift which have two unknown numbers, Jung considered that quadrati- cally hyponormal and positively quadratically hyponormal are equivalent. But the author proved that the conjecture is wrong. And last he gives an example.

关 键 词：算子 2-亚正规 二次亚正规 正的二次亚正规 

分 类 号：O177.1[理学—数学]