---
title: "Set difference mathematical notation"
description: "Set difference is a recurring research-paper notation family. Keeps elements from the left set after removing every element that appears in the right set."
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/set-difference"
md_url: "https://fanout.sh/labs/math-decoder/symbol/set-difference.md"
last_updated: "2026-08-09"
access: "public"
---

# Set difference mathematical notation

Set difference is a recurring research-paper notation family. Keeps elements from the left set after removing every element that appears in the right set.

## Public overview

Set difference: Keeps elements from the left set after removing every element that appears in the right set. Example: Take the elements in A that are not also in B.

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