---
title: "Big O mathematical notation"
description: "Big O is a recurring research-paper notation family. Describes an asymptotic upper growth class while suppressing constants and lower-order terms."
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/big-o"
md_url: "https://fanout.sh/labs/math-decoder/symbol/big-o.md"
last_updated: "2026-08-09"
access: "public"
---

# Big O mathematical notation

Big O is a recurring research-paper notation family. Describes an asymptotic upper growth class while suppressing constants and lower-order terms.

## Public overview

Big O: Describes an asymptotic upper growth class while suppressing constants and lower-order terms. Example: For sufficiently large n, runtime grows no faster than a constant times n squared.

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