Volume 17, Issue 2 Pieter C. Allaart Digital sum inequalities and approximate convexity of Takagi-type functions 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 Pieter C. Allaart Find more articles with the same keywords digital sum cumulative digital sum Takagi function approximate convexity Find more articles with the same subject classes 11A63 26A27 26A51