Fatemah Ayatollah Zadeh Shirazi

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math.FA2022

Eigenvalues of weighted generalized shifts over direct products of vector spaces

Safoura Arzanesh, Fatemah Ayatollah Zadeh Shirazi, Arezoo Hosseini +1

In the following text for vector space $V$ over field $F$ we compute all eigenvalues of weighted generalized shift $σ_{φ, w} : V^{Γ} \to V^{Γ}$ (and generalized shift $σ_φ:V^Γ\t…

math.FA2021

Generalized shifts through derivations' concept in $ℓ^{p} (τ)$ spaces

Safoura Arzanesh, Fatemah Ayatollah Zadeh Shirazi, Arezoo Hosseini

In the following text for $p \in [1, \infty]$ , nonzero cardinal number $τ$ , self--map $φ : τ \to τ$ if there exists $N \in N$ such that $φ^{- 1} (α)$ has at most $N$ elements for eac…

Eigenvalues of weighted generalized shifts over direct products of vector spaces

Generalized shifts through derivations' concept in ℓp(τ) spaces

Generalized shifts through derivations' concept in $ℓ^{p} (τ)$ spaces