On the Möbius invariant principal functions of Pincus
In this semi-expository short note, we prove that the only homogeneous pure hyponormal operator \(T\) with \(\operatorname{rank} (T^*T-TT^*) =1\), modulo unitary equivalence, is the unilateral shift.
Main Authors: | Sagar Ghosh, Gadadhar Misra |
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Format: | Article |
Language: | English |
Published: |
AGH Univeristy of Science and Technology Press
2024-02-01
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Series: | Opuscula Mathematica |
Subjects: | |
Online Access: | https://www.opuscula.agh.edu.pl/vol44/3/art/opuscula_math_4420.pdf |
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