Volume 8, Issue 2 Mohammed Hichem Mortad Commutativity of unbounded normal and self-adjoint operators and applications Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Mohammed Hichem Mortad Find more articles with the same keywords unbounded selfadjoint and normal operators invertible unbounded operators operator products strong commutativity Find more articles with the same subject classes 47A05 47B25