---
title: "Subscripts, superscripts, and decorations"
description: "Distinguish indices, powers, iteration labels, estimates, averages, and transposes."
canonical_url: "https://fanout.sh/ml-math/decoder/subscripts-superscripts-and-decorations"
md_url: "https://fanout.sh/ml-math/decoder/subscripts-superscripts-and-decorations.md"
last_updated: "2026-08-09"
access: "public"
---

# Subscripts, superscripts, and decorations

Distinguish indices, powers, iteration labels, estimates, averages, and transposes.

## Public overview

Is the small mark changing a value, naming a version, or selecting a part?

Read the expression aloud without skipping structural marks.

Identify the symbol that controls the expression.

Translate the expression into one faithful sentence.

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