Volume 12, Issue 4 Xiaohong Cao Jiong Dong Junhui Liu Weyl's theorem and its perturbations for the functions of 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 Xiaohong Cao Jiong Dong Junhui Liu Find more articles with the same keywords Weyl's theorem Browder's theorem spectrum Find more articles with the same subject classes 47B53 47A55 47A10