递归生成加权移位算子正的二次亚正规性  

Positively Quadratically Hyponormal of Recursively Generated Weighted Shifts

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5期12-16,共5页Journal of Langfang Normal University(Natural Science Edition)

摘　　要：Curto-Fialkow讨论了由三个权序列递归生成的加权移位算子的正的二次亚正规性,给出了算子是正的二次亚正规的一个充要条件。在此基础之上,讨论了由五个权序列递归生成的加权移位算子正的二次亚正规性。Curto-Fialkow discussed positively quadratically hyponormal which is generated by only three weighted shifts and presented a necessary and sufficient condition for which being positively quadratically hyponormal. Then the author considered positively quadratically hyponormality of recursively generated weighted shift which is generated by five weights.

关 键 词：递归生成加权移位 二次亚正规 正的二次亚正规 

分 类 号：O177.1[理学—数学]