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math.FA2023
Weighted shifts on directed forests and hyponormality
Piotr Pikul
In a paper from 2012 Jabłoński, Jung and Stochel introduced the weighted shifts on directed trees, a generalisation of well known weighted shift operators on . In the last…
math.FA2022
Joint backward extension property for weighted shifts on directed trees
Piotr Pikul
Weighted shifts on directed trees are a decade old generalisation of classical shift operators in the sequence space . In this paper we introduce the joint backward extensi…