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Mansooreh Moosapoor
Department of Mathematics, Farhangian University, Tarbiat Moallem Ave, Tehran 1998963341.
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics

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On Subspace-ergodic Operators Mansooreh Moosapoor
Journal of Mathematical and Fundamental Sciences Vol. 52 No. 3 (2020)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2020.52.3.5

Abstract

In this paper, we define subspace-ergodic operators and give examples of these operators. We show that by any given separable infinite-dimensional Banach space, subspace-ergodic operators can be constructed. We demonstrate that an invertible operator T is subspace-ergodic if and only if T-1 is subspace-ergodic. We prove that the direct sum of two subspace-ergodic operators is subspace-ergodic and if the direct sum of two operators is subspace-ergodic, then each of them is subspace-ergodic. Also, we investigate relations between subspace-ergodic and subspace-mixing operators. For example, we show that if T is subspace-mixing and invertible, then Tn and T-n are subspace-ergodic for n∈ℕ.
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