Auxiliary types of sums occur in the theory, for example character sums; going back to Harold Davenport's thesis.
Sum 41 | The Sum of All Fears | Yeung Sum | The Sum of All Fears (film) | Sum Mo Chikan | Exponential growth | The Sum of Us | Sum-of-squares optimization | Sum of absolute transformed differences | Systematic Evolution of Ligands by Exponential Enrichment | Motivation (Sum 41 song) | lump sum | J C Sum | Exponential random graph models | Exponential function | Dim sum | civis romanus sum | Chebyshev's sum inequality |