Quartically hyponormal weighted shifts need not be 3-hyponormal
نویسندگان
چکیده
منابع مشابه
Quartically Hyponormal Weighted Shifts Need Not Be 3-hyponormal
We give the first example of a quartically hyponormal unilateral weighted shift which is not 3-hyponormal.
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ژورنال
عنوان ژورنال: Journal of Mathematical Analysis and Applications
سال: 2006
ISSN: 0022-247X
DOI: 10.1016/j.jmaa.2005.04.020