# Integral

*Math & Statistics — Finicade finance glossary*

The area under a curve — adding up infinitely many tiny slices. Probabilities are integrals of a density, and expected values are integrals of payoffs, so it underlies all continuous pricing.

**Also known as:** integration, riemann-sum, integral-as-area

**Related terms:** [Probability Distribution](https://finicade.com/glossary/probability-distribution), [Expected Value](https://finicade.com/glossary/expected-value), [Derivative (Calculus)](https://finicade.com/glossary/derivative-calculus)

**Taught in:** Math Masters — Integrals: Area, Probability, Expectation

Source: https://finicade.com/glossary/integral