Volume 12, Issue 1 Haihui Fan Don Hadwin Wenjing Liu An extension of the Chen-Beurling-Helson-Lowdenslager theorem 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 Haihui Fan Don Hadwin Wenjing Liu Find more articles with the same keywords gauge norm Hardy space Beurling theorem Find more articles with the same subject classes 46E20 30H10 30J99 47L10