Volume 19, Issue 1 Eungil Ko Ji Eun Lee Mee-Jung Lee On C-hyponormal operators 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 Eungil Ko Ji Eun Lee Mee-Jung Lee Find more articles with the same keywords C-normal operator C-hyponormal operator hyponormal Find more articles with the same subject classes 47A05 47B15 47B20