---
title: "Subset or equal mathematical notation"
description: "Subset or equal is a recurring research-paper notation family. States that every element of the left set also belongs to the right set, allowing equality."
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/subset-or-equal"
md_url: "https://fanout.sh/labs/math-decoder/symbol/subset-or-equal.md"
last_updated: "2026-08-09"
access: "public"
---

# Subset or equal mathematical notation

Subset or equal is a recurring research-paper notation family. States that every element of the left set also belongs to the right set, allowing equality.

## Public overview

Subset or equal: States that every element of the left set also belongs to the right set, allowing equality. Example: Nothing in A lies outside B.

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