Volume 23, Issue 1 Feng Liu On the variation of the discrete maximal operator 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 Feng Liu Find more articles with the same keywords discrete nontangential fractional maximal operator bounded variation boundedness continuity Find more articles with the same subject classes 42B25 46E35