当前位置：网站首页>Unnamed article
Unnamed article
20210504 12:42:37 【sanhangkc】
The mathematical symbols commonly used in this official account
Focus on “ Sanxing scientific innovation ” Friends of WeChat official account will find that some of the official account numbers will bring some mathematical symbols. , Some are common mathematical symbols , Some are less common mathematical symbols , Some symbols are difficult to grasp even if you are a math major , The main reason is that there are too many mathematical symbols , It's hard to categorize , The maintenance of mathematical symbols is a longterm work of continuous enrichment and improvement , It should be one version after another , This paper tries to do classification cleaning , The examples are vivid , Accurate interpretation , Welcome to leave a message for correction .
（ This update time 20210328）

aggregate
Symbol  Mathematical meaning  example  paraphrase 

Positive integer set  0 It does not belong to the set of natural numbers  
Set of natural numbers  0 It belongs to the set of natural numbers  
Set of integers  2 Belongs to the set of integers  
Set of real numbers  Radical sign 2 It belongs to the set of real numbers  
Set of rational numbers  Radical sign 2 It does not belong to the set of rational numbers  
Complex sets  2+i  The combination of real number and imaginary number  
Set of imaginary numbers  i  Unit imaginary number  
An empty set 

Set operations
Symbol  Mathematical meaning  example  paraphrase 

Belong to  2 It belongs to the set of natural numbers  
Do not belong to  2 Does not belong to the set of positive integers  
intersection  aggregate And assemble The intersection of is a set  
Combine  aggregate And assemble The union of is a set  
contain  aggregate Contains sets  
It really includes  Set true Contains sets  
Included in  aggregate Contained in collection  
It's really contained in  aggregate True inclusion in set  
   Potential of set  $  A 
  The difference in the set  Radical sign 2 The difference set belonging to real number set and rational number set , The set of irrational numbers 

operation
Symbol  Mathematical meaning  example  paraphrase 

+  Add  2+3=5  2 add 3 be equal to 5 
  Subtraction  31=2  3 subtract 1 be equal to 2 
Multiplication  （2*3=6）  2 multiply 3 be equal to 6  
division  （6/3=2）  6 Divide 3 be equal to 2  
   The absolute value  3=3  negative 3 The absolute value of is equal to 3 
！  Factorial  5 The factorial representation of from 1 Start to 5 The tandem of  
prescribing  2 prescribing  
Take the logarithm  Yes 4 Take 2 Log base  
Take 10 Is the low logarithm  Yes 100 Take 10 Log base  
Take natural number e Is the low logarithm  Yes 10 Take e Log base  
=  be equal to  
<  Less than  2<3  2 Less than 3 
＞  Greater than  3＞2  3＞2 
<<  Far less than  2<<10000  2 Far less than 10000 
>>  Far greater than  10000>>2  10000 Far greater than 2 
About equal to  Natural number e About equal to 2.718  
Equal to  
∵  because  Often used to prove  
∴  therefore  Often used to prove  
There is  
arbitrarily  
┐  Not  ┐q  Not q proposition 
Introduction  Conditions p Draw conclusions q  
∧  And  proposition p And proposition q  
∨  or  proposition p Or proposition q  
∑  Lianga  i from 1 Add to 5 be equal to 15  
∏  multiply continuously  i from 1 Add to 5 be equal to 120  
C  Combinatorial number  from 6 Take out... Of the different elements 2 A combination of elements , common 15 Maybe  
A  Number of permutations  from 6 Take out... Of the different elements 2 An arrangement of elements , common 30 Maybe  
It's just infinite  
Negative infinity  
（ ）  greatest common divisor  （4,6）= 2  4 And 6 The greatest common divisor of 2 
Common multiple  [3, 4] =12  3 And 4 The minimum common multiple of is 12 

other Readers are welcome to provide more clues
版权声明
本文为[sanhangkc]所创，转载请带上原文链接，感谢
https://chowdera.com/2021/05/20210504124132404v.html
边栏推荐
 Power node tutorial: using PHP to write web service
 一个SQL让导致整个数据库都整挂了！
 A SQL causes the whole database to hang up!
 ASP检测客户是否取消微信公众号
 ASP微信服务号H5客户登陆，且获取客户授权的用户基本信息
 ASP程序写的项目与微信服务号（公众号）完美结合。仅需一个DLL组建WeixinDLL
 ASP testing whether customers cancel WeChat official account
 ASP wechat service number H5 customer login, and obtain the basic information of the user authorized by the customer
 The ASP program is perfectly integrated with WeChat service number (official account). Only one DLL is needed to build weixindll
 ASP检测客户是否取消微信公众号
猜你喜欢

列表的常用方法

收藏分享：众多PPT模板，分享给需要的你！

ECMAScript 2019(ES10)新特性简介

ASP testing whether customers cancel WeChat official account

Common methods of listing

Collection and share: many ppt templates, to share with you in need!

New features of ECMAScript 2019 (ES10)

从零开始带你打开批处理大门

Start from scratch to open the door of batch processing

ECMAScript 2019(ES10)新特性简介
随机推荐
 New features of ECMAScript 2019 (ES10)
 FutureTask 使用指南
 Futuretask Guide
 .Net之静态资源
 ECMAScript 2019(ES10)新特性简介
 Static resources of. Net
 New features of ECMAScript 2019 (ES10)
 综述 面向自动驾驶的边缘计算技术研究
 我的视频号上线了
 Overview  research on edge computing technology for autopilot
 My video number is online
 眼睛看特定角度有闪光的处理办法
 How to deal with the flash when the eye looks at a specific angle
 “古籍汉字最强数据库”国学大师网关闭 网友：我的论文怎么办？
 "The strongest database of Chinese characters in ancient books" Sinology masters website closed netizen: what about my thesis?
 Martin Fowler厌倦ORM了
 什么是TOGAF以及如何获得TOGAF认证
 Martin Fowler is tired of orm
 What is togaf and how to obtain togaf certification
 How to import the SQL file in the book "SQL basic course" into the database?
 LeetCode 1847. 最近的房间（排序离线计算 + 二分查找）
 LeetCode 1846. 减小和重新排列数组后的最大元素
 【C++】从零开始，只使用FFmpeg，Win32 API，实现一个播放器（一）
 MapReduce on yarn的流程
 Leetcode 1847. Nearest room (sort offline calculation + binary search)
 Leetcode 1846. Reduce and rearrange the largest element of an array
 [C + +] starting from scratch, only using ffmpeg and Win32 API to realize a player (1)
 MapReduce on yarn process
 为什么有时博客中的代码复制进自己的VS中报错
 光猫和路由器都支持ipv6，却无法使用ipv6？
 【C++】从零开始，只使用FFmpeg，Win32 API，实现一个播放器（一）
 Why does the code in the blog sometimes copy into its own vs and report an error
 Both optical cat and router support IPv6, but they can't use it?
 [C + +] starting from scratch, only using ffmpeg and Win32 API to realize a player (1)
 基于事件日志的流程挖掘简介  Chaudhuri
 最好的语言也敌不过人类愚蠢：使用PHPStan通过静态分析尽早捕获PHP错误  madewithlove
 为什么我不推荐鲍勃叔叔的清晰架构这本书？
 Chromium privacy sandbox makes user privacy more secure
 Introduction of process mining based on event log  Chaudhuri
 The best language is no match for Human Stupidity: using phpstan to catch PHP errors early through static analysis  made with love