---
title: "Entropy mathematical notation"
description: "Entropy is a recurring research-paper notation family. Measures the average information or uncertainty in outcomes drawn from a probability distribution."
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/entropy"
md_url: "https://fanout.sh/labs/math-decoder/symbol/entropy.md"
last_updated: "2026-08-09"
access: "public"
---

# Entropy mathematical notation

Entropy is a recurring research-paper notation family. Measures the average information or uncertainty in outcomes drawn from a probability distribution.

## Public overview

Entropy: Measures the average information or uncertainty in outcomes drawn from a probability distribution. Example: Average each outcome's negative log probability under p.

---
This representation contains public Fanout content only. Protected Pro lessons, account data, billing, checkout, and pricing are not included.

Browse the public content map: https://fanout.sh/sitemap.md