Volume 8, Issue 1 Fugen Gao Xiaochun Li On k-quasi-paranormal 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 Fugen Gao Xiaochun Li Find more articles with the same keywords Riesz idempotent k-quasi-paranormal operators inequality Find more articles with the same subject classes 47B20 47A63