Volume 12, Issue 2 Il Ju An Jaeseong Heo Hypercyclicity and Weyl type theorems for 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 Il Ju An Jaeseong Heo Find more articles with the same keywords 2 × 2 operator matrices Browder essential approximate point spectrum Weyl's theorem a Find more articles with the same subject classes 47A53 47A55 47A10