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.
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)
关键词
递归生成加权移位
二次亚正规
正的二次亚正规
recursively generated weighted shift
quadratically hyponormal
positively quadratically hyponormal
