Ebrahim Samei

collaborators

4 papers

math.OA2026

Amenable traces and the joint numerical radius

Vern I. Paulsen, Mizanur Rahaman, Ebrahim Samei

We provide necessary and sufficient characterizations of the existence of an amenable trace on a C $^{*}$ -algebra in terms of the joint free numerical radius of tuples of unitaries, i…

math.FA2026

Multipliers of Beurling-Fourier algebras

Mahmood Alaghmandan, Olof Giselsson, Ebrahim Samei +1

For a locally compact group G we introduce and study the reduced Beurling-Fourier-Stieltjes algebra, a weighted analogue of the reduced Fourier-Stieltjes algebra, together with the…

math.OA2026

Crossed product functors associated to $ℓ^{p}$ -pseudofunctions

Jacek Krajczok, Ebrahim Samei, Timo Siebenand +1

We show that the $ℓ^{p}$ -pseudofunctions, which were recently shown to lead to exotic completions of group $C^{*}$ -algebras by Wiersma and the second named author, can be used to co…

math.DS2026

Entropies and Poisson boundaries of random walks on groups with rapid decay

Benjamin Anderson-Sackaney, Tim de Laat, Ebrahim Samei +1

Let $G$ be a countable group and $I^¼$ a probability measure on $G$ . We build a new framework to compute asymptotic quantities associated with the $I^¼$ -random walk on $G$ , using met…

Amenable traces and the joint numerical radius

Multipliers of Beurling-Fourier algebras

Crossed product functors associated to ℓp-pseudofunctions

Entropies and Poisson boundaries of random walks on groups with rapid decay

Crossed product functors associated to $ℓ^{p}$ -pseudofunctions