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A Lower Bound for the Differences of Powers of Linear Operators
Esterle--Berkani's conjecture Quasi-nilpotent linear operator Differences of powers Decay
2007/12/11
Let $T$ be a bounded linear operator in a Banach space, with $\sigma(T) = \{1\}$. In 1983, Esterle--Berkani' s conjecture was proposed for the decay of differences $\left ( I - T \right ) T\sp{n}$ as ...