Volume 7, Issue 4 Ji Eun Lee Spectral properties between operator matrices and Helton class 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 Ji Eun Lee Find more articles with the same keywords Helton class operator matrix the property (β)ε the generalized Weyl's theorem Find more articles with the same subject classes 47A11 47A53 47A10