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---
lastmod: "2021-09-12T22:47:44.0000000+01:00"
author: patrick
categories:
- mathematics
comments: true
date: "2017-02-14T00:00:00Z"
aliases:
- /cauchy-schwarz-proof/
title: Proof of Cauchy-Schwarz
---
This is just a link to a [beautiful proof][proof] of the [Cauchy-Schwarz inequality][CS].
There are a number of elegant proofs, but this is by far my favourite, because (as pointed out in the paper) it "builds itself".
[CS]: https://en.wikipedia.org/wiki/Cauchy%E2%80%93Schwarz_inequality
[proof]: http://www-stat.wharton.upenn.edu/~steele/Publications/Books/CSMC/New%20Problems/CSNewProof/CauchySchwarzInequalityProof.pdf