summation Synonym

addition - total - aggregate - aggregation - sum - tally - grand total

In mathematics, summation is the process of adding a sequence of numbers or expressions to obtain their total. It is often represented by the Greek capital letter sigma (Σ), followed by a rule that describes which terms are to be added. Summation can involve a finite set of terms, such as adding a list of given numbers, or an infinite series, where infinitely many terms are added according to a specific pattern. The concept is fundamental in arithmetic, algebra, calculus, statistics, and many applied fields, as it underpins notions like averages, integrals, and discrete accumulations.