S. Zadeh

activity

20142026

most citedOn isomorphisms between weighted

L^{p}

-algebras

2 citations · 6 across the 12 of their papers we have counts for

collaborators

13 papers

math.OA2026

A Non-commutative Individual Ergodic Theorem Along Sparse Random Subsequences

Léonard Cadilhac, Christian Le Merdy, Safoura Zadeh

Let $(M, τ)$ be a semifinite von Neumann algebra, let $J$ be a trace-preserving Jordan isomorphism, and let $(n_{k})_{k \geq 1}$ be a random increasing sequence of integers obtained by…

math.OA2026

Pointwise Convergence for Random Ergodic Averages in Non-commutative $L^{p}$ -spaces

Christian Le Merdy, Safoura Zadeh

Let $M$ be a semifinite von Neumann algebra and $T$ a positive contraction on both $L^{1} (M)$ and $L^{\infty} (M)$ . We consider ergodic averages along a random sparse subsequence determ…

math.OA2025

Absolute dilation of Fourier multipliers

Christian Le Merdy, Safoura Zadeh

Let $M$ be a von Neumann algebra equipped with a normal semifinite faithful (nsf) trace. We say that an operator $T : M \to M$ is absolutely dilatabl…

math.OA2024

On the extension of positive maps to Haagerup non-commutative $L^{p}$ -spaces

Christian Le Merdy, Safoura Zadeh

Let $M$ be a von Neumann algebra, let $φ$ be a normal faithful state on $M$ and let $L^{p} (M, φ)$ be the associated Haagerup non-commutative $L^{p}$ -spaces, for $1 \leq p \leq \infty$ . Let…

math.CA2023

Separating Fourier and Schur multipliers

Cédric Arhancet, Christoph Kriegler, Christian Le Merdy +1

Let $G$ be a locally compact unimodular group, let $1 \leq p < \infty$ ,let $ϕ \in L^{\infty} (G)$ and assume that the Fourier multiplier $M_{ϕ}$ associated with $ϕ$ is bounded on the noncomm…

math.FA2023

Hankel operators on $L^{p} (R_{+})$ and their $p$ -completely bounded multipliers

Loris Arnold, Christian Le Merdy, Safoura Zadeh

We show that for any $1 < p < \infty$ , the space $H an k_{p} (R_{+}) \subseteq B (L^{p} (R_{+}))$ of all Hankel operators on $L^{p} (R_{+})$ is equal to the $w^{*}$ -closure of th…

math.FA2022★ 2 cited

$S^{1}$ -bounded Fourier multipliers on $H^{1} (R)$ and functional calculus for semigroups

Loris Arnold, Christian Le Merdy, Safoura Zadeh

Let $T : H^{1} (R) \to H^{1} (R)$ be a bounded Fourier multiplier on the analytic Hardy space $H^{1} (R) \subset L^{1} (R)$ and let $m\in L^\infty({\m…

math.FA2021

Weak*-continuity of invariant means on spaces of matrix coefficients

Tim de Laat, Safoura Zadeh

With every locally compact group $G$ , one can associate several interesting bi-invariant subspaces $X (G)$ of the weakly almost periodic functions $WAP (G)$ on $G$ , each of…

math.OA2020

Surjective separating maps on noncommutative $L^{p}$ -spaces

Christian Le Merdy, Safoura Zadeh

Let $1 \leq p < \infty$ and let $T : L^{p} (M) \to L^{p} (N)$ be a bounded map between noncommutative $L^{p}$ -spaces. If $T$ is bijective and separating (i.e., for an…

math.OA2020

On factorization of separating maps on noncommutative $L^{p}$ -spaces

Christian Le Merdy, Safoura Zadeh

For any semifinite von Neumann algebra $M$ and any $1 \leq p < \infty$ , we introduce a natutal $S^{1}$ -valued noncommutative $L^{p}$ -space $L^{p} (M; S^{1})$ . We say that…

math.OA2019★ 2 cited

$ℓ^{1}$ -contractive maps on noncommutative $L^{p}$ -spaces

Christian Le Merdy, Safoura Zadeh

Let $T : L^{p} (M) \to L^{p} (N)$ be a bounded operator between two noncommutative $L^{p}$ -spaces, $1 \leq p < \infty$ . We say that $T$ is $ℓ^{1}$ -bounded (resp. $\e…

math.FA2018★ 2 cited

On isomorphisms between weighted $L^{p}$ -algebras

Yulia Kuznetsova, Safoura Zadeh

Let $G$ be a locally compact group and $ω$ be a continuous weight on $G$ . In this paper, we first characterize bicontinuous biseparating algebra isomorphisms between weighted $L^{p}$ …

math.FA2014

Isometric isomorphism of the annihilator of $C_{0} (G)$ in $LU C (G)^{*}$

Safoura Zadeh

Let $LU C (G)$ denote the $C^{*}$ -algebra of left uniformly continuous functions with the uniform norm and let $C_{0} (G)^{⊥}$ denote the annihilator of $C_{0} (G)$ in $LU C (G)^{*}$ . In thi…

A Non-commutative Individual Ergodic Theorem Along Sparse Random Subsequences

Pointwise Convergence for Random Ergodic Averages in Non-commutative Lp-spaces

Absolute dilation of Fourier multipliers

On the extension of positive maps to Haagerup non-commutative Lp-spaces

Separating Fourier and Schur multipliers

Hankel operators on Lp(R+​) and their p-completely bounded multipliers

S1-bounded Fourier multipliers on H1(R) and functional calculus for semigroups

Weak*-continuity of invariant means on spaces of matrix coefficients

Surjective separating maps on noncommutative Lp-spaces

On factorization of separating maps on noncommutative Lp-spaces

ℓ1-contractive maps on noncommutative Lp-spaces

On isomorphisms between weighted Lp-algebras

Isometric isomorphism of the annihilator of C0​(G) in LUC(G)∗

Pointwise Convergence for Random Ergodic Averages in Non-commutative $L^{p}$ -spaces

On the extension of positive maps to Haagerup non-commutative $L^{p}$ -spaces

Hankel operators on $L^{p} (R_{+})$ and their $p$ -completely bounded multipliers

$S^{1}$ -bounded Fourier multipliers on $H^{1} (R)$ and functional calculus for semigroups

Surjective separating maps on noncommutative $L^{p}$ -spaces

On factorization of separating maps on noncommutative $L^{p}$ -spaces

$ℓ^{1}$ -contractive maps on noncommutative $L^{p}$ -spaces

On isomorphisms between weighted $L^{p}$ -algebras

Isometric isomorphism of the annihilator of $C_{0} (G)$ in $LU C (G)^{*}$