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math.OA2026
On the Orlicz function estimations of the -Davis--Wielandt radius in -algebra
Debarati Bhattacharya, Fuad Kittaneh, Arnab Patra
We present a systematic study of -Davis--Wielandt radius estimates for elements in a unital -algebra through an Orlicz function approach. We derive novel bounds for the alg…
math.OA2026
On the geometry of the algebraic Davis--Wielandt shell and norm-parallelism in -algebra
Debarati Bhattacharya, Fuad Kittaneh, Arnab Patra +1
This article is devoted to the study of the Davis--Wielandt shell and the Davis--Wielandt radii of elements in a -algebra. Utilizing a state-space approach, several geometric…