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# System prepended metadata

title: Field(體)定義
tags: [crypto]

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---
title: Field(體)定義
tags: crypto
lang: zh_tw
---

* [筆記總覽](https://hackmd.io/@LJP/rkerFdnqS)

[TOC]

# Field(體) 定義
A ring $R$ is a **field** if every nonzero $a\in R$ has an inverse $a^{-1}$