Volume 15, Issue 3 Maria Adam Aikaterini Aretaki Ahmed Muhammad Approximation of the numerical range of polynomial operator matrices 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 Maria Adam Aikaterini Aretaki Ahmed Muhammad Find more articles with the same keywords polynomial operator q-numerical range projection method Hain-Lüst operator Stokes operator Find more articles with the same subject classes 47A58 47A20 47A12 15A60