Volume 19, Issue 2 Lulu Zhang Guojun Hai The properties of the product of two orthogonal projections 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 Lulu Zhang Guojun Hai Find more articles with the same keywords CS decomposition unbounded operator orthogonal projection Tseng inverse core inverse Find more articles with the same subject classes 15A09 47A05 15A23