euler.md

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---
"lang": "en",
"title": "Euler's Identity",
"subtitle": "How to combine 5 important math constants to a short formula",
"authors": ["Max Muster<sup>1</sup>", "Lisa Master<sup>2</sup>"],
"adresses": ["<sup>1</sup>Hochschule Gartenstadt","<sup>2</sup>Universität Übersee"],
"date": "May 2021",
"description": "mdmath LaTeX demo site",
"tags": ["markdown+math","VSCode","static page","publication","LaTeX","math"]
---

Abstract

Euler's identity makes a valid formula out of five mathematical constants.

1. Introduction

Euler's identity is often cited as an example of deep mathematical beauty. Three basic arithmetic operations occur exactly once and combine five fundamental mathematical constants [1].

2. The Identity

Starting from Euler's formula $e^{ix}=\cos x + i\sin x$ for any real number $x$, we get to Euler's identity with the special case of $x = \pi$

$$e^{i\pi}+1=0,.$$ (1)

The arithmetic operations addition, multiplication and exponentiation combine the fundamental constants

• the additive identity $0$.
• the multiplicative identity $1$.
• the circle constant $\pi$.
• Euler's number $e$.
• the imaginary constant $i$.

3. Conclusion

It has been shown, how Euler's identity makes a valid formula from five mathematical constants.

References

[1] Euler's identity