Volume 4, Issue 4 Loredana Ciurdariu On Bergstrom inequality for commuting gramian normal 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 Loredana Ciurdariu Find more articles with the same keywords Pseudo-Hilbert spaces (Loynes spaces) seminorms Bergstrom inequality Find more articles with the same subject classes 47A45 42B10