---
title: "Diagonal operator mathematical notation"
description: "Diagonal operator is a recurring research-paper notation family. Creates a diagonal matrix from a vector or extracts diagonal entries from a matrix,…"
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/diagonal"
md_url: "https://fanout.sh/labs/math-decoder/symbol/diagonal.md"
last_updated: "2026-08-09"
access: "public"
---

# Diagonal operator mathematical notation

Diagonal operator is a recurring research-paper notation family. Creates a diagonal matrix from a vector or extracts diagonal entries from a matrix,…

## Public overview

Diagonal operator is a recurring research-paper notation family. Creates a diagonal matrix from a vector or extracts diagonal entries from a matrix, depending on context.

Diagonal operator: Creates a diagonal matrix from a vector or extracts diagonal entries from a matrix, depending on context. Example: Place a and b on a matrix diagonal and fill other entries with zero.

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