Volume 14, Issue 1 H. Ikmet Seyhan Özarslan Letter to the editor 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 H. Ikmet Seyhan Özarslan Find more articles with the same keywords absolute summability equivalence theorem infinite series Riesz mean Find more articles with the same subject classes 40F05 40G99