Ebrahim Samei

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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.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…

Amenable traces and the joint numerical radius

Crossed product functors associated to ℓp-pseudofunctions

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