Title of article :
Quartically hyponormal weighted shifts
need not be 3-hyponormal
Author/Authors :
Ra?l E. Curto، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2006
Abstract :
We give the first example of a quartically hyponormal unilateral weighted shift which is not
3-hyponormal.
2005 Elsevier Inc. All rights reserved
Keywords :
k-Hyponormal , Weakly k-hyponormal , weighted shift
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications
