Square functions associated with Ritt$_E$ operators
Square functions associated with Ritt$_E$ operators
For a subset $E = \{\xi_1, ..., \xi_N\}$ of the unit circle $\mathbb{T}$, the notion of Ritt$_E$ operators on a Banach space and their functional calculus on generalized Stolz domains was developed and studied in arXiv:2203.05373. In this paper, we define a quadratic functional calculus for a Ritt$_E$ operator on …