· α β γ ø ÷ ½ ² ³          
θ ° π ± μ    
       

πθ ·αβγø °÷½≥≤²³∠≈≅∞≠±√μ→←↑↓↔↵⇒⇐⇑⇓⇔

24个希腊字母

  大写 小写 英文注音 国际音标注音 中文读音 意义
1 Α α alpha a:lf 阿尔法 角度;系数
2 Β β beta bet 贝塔 磁通系数;角度;系数
3 Γ γ gamma ga:m 伽马 电导系数(小写)
4 Δ δ delta delt 德尔塔 变动;;屈光度
5 Ε ε epsilon ep`silon 伊普西龙 对数之基数
6 Ζ ζ zeta zat 截塔 系数;方位角;阻抗;相对粘度;原子序数
7 Η η eta eit 艾塔 磁滞系数;效率(小写)
8 Θ θ thet θit 西塔 温度;相位角
9 Ι ι iot aiot 约塔 微小,一点儿
10 Κ κ kappa kap 卡帕 介质常数
11 Λ λ lambda lambd 兰布达 波长(小写);体积
12 Μ μ mu mju 磁导系数微(千分之一)放大因数(小写)
13 Ν ν nu nju 磁阻系数
14 Ξ ξ xi ksi 克西 随机变量
15 Ο ο omicron omik`ron 奥密克戎 无穷小量:ο(x)
16 Π π pi pai 圆周率=圆周÷直径=3.14159 2653589793
17 Ρ ρ rho rou 电阻系数(小写)密度(小写)
18 Σ σ sigma `sigma 西格马 总和(大写),表面密度;跨导(小写)
19 Τ τ tau tau 时间常数
20 Υ υ upsilon jup`silon 宇普西龙 位移
21 Φ φ phi fai 佛爱 磁通;黄金分割符号;空集(大写);工程学中表示直径
22 Χ χ chi phai 西 卡方分布;电感
23 Ψ ψ psi psai 普西 角速;介质电通量(静电力线);角
24 Ω ω omega o`miga 欧米伽 欧姆(大写);角速(小写);角

插入-公式-符号下拉箭头-基础数学下拉箭头-希腊字母;

数学符号:GB3102.11-82

(f(x)在点处的左极限 Φ(z) 正态概率积分
f(x)的反函数   sgn 符号函数
f(x)的一阶导函数   狄拉克函数
f(x)的二阶导函数   不完全伽马函数
f(x)的n阶导函数   普西函数
F(x) 广义积分      
d(f) f(x)的微分   li(z) 对数函数
(a,b) a与b的开区间 不包括a,b两点 黎曼函数
[a,b] a与b的闭区间 包括a,b两点 F(x) 随机变量x的分布函数
x的有限增量   F(x,y) 二维随机变量(x,y)的联合分布函数
af f的全微分   (x,y)关于x的边缘密度函数
f的差分   独立样本联合分布函数
f的二阶差分      
f的n阶差分      
f(x)对x自a到b的积分      

max 最大   等价
min 最小   恒等于
属于   约等于
包含于   相似
包含   () 圆括号
  [] 方括号
  {} 花括号
存在   因为
成正比   所以
无穷大   lim 极限
垂直   上极限
平行   下极限
充分性证明
命题A成立,则命题B成立;
sup 上确界
必要性证明
命题B成立,则命题A成立;
inf 下确界
等价于
当且仅当,互为充要条件
l.i.m 均方收敛
欧拉常数   单调上升
En 欧拉数   单调下降
a:b a比b   收敛于、趋于
|a| a的绝对值   推出
A! A的阶乘   排列
(2n)!! 2n的双阶乘   排列
(2n+1)!! 2n+1的双阶乘      

         
      事件A在n次试验中的频率
      P(A) 事件A的概率
      P(A|B) 事件B发生的条件下事件A的概率
      P{|u|> 条件概率
      n重贝努利试验
      E(x) 随机变量的期望
      D(x) 随机变量的方差
      样本均值
      样本标准差
      E( x的k阶原点矩
|A| 方阵A的行列式   E[ x的k阶中心矩
n维向量空间   Cov(x,y) 二维随机变量的协方差
(a,b) 两个n维向量的内积   二维随机变量x,y的相关系数
(A,B) 分块矩阵      
(A,b)增广矩阵 事件A的对立事件 B(1,P) 0-1分布
tr(A) 矩阵A的秩   B(n,P) 二项分布
矩阵A的伴随矩阵   B() 泊松分布
矩阵A的逆矩阵   (a,b) 均匀分布
矩阵A的转置矩阵   E() 指数分布
行列式D的转置行列式   N() 正态分布
的子空间      
对角矩阵      
单位矩阵      
n维向量的长度 等于    
样本空间      

中文韵母表

a ā á ǎ à 高(gāo)常(cháng)广(guǎng)逛(guàng)  
o ō ó ǒ ò 窝(wō)哦(ó)我(wǒ)怄òu  
e ē é ě è 喝(hē)河(hé)很(hěn)褐(hè)  
i ī í ǐ ì 衣(yī)移(yí)椅(yǐ)益(yì)  
u ū ú ǔ ù 突(tū)图(tú)土(tǔ)兔(tù)  
ü ü ǘ ǚ ǜ 驴(lǘ)吕(lǚ)律(lǜ)掠(lüè)  

Character Entity References in HTML 4 and XHTML 1.0 to go

Here is a set of tables containing the 252 allowed entities in HTML 4 and XHTML 1.0, as described in section 24 of the official HTML 4 specifications, published by the W3C. I have divided them into my own, hopefully logical, categories:

Each table has five columns. The first column contains the entity reference, in the form &entity_name;, that is, an ampersand, the entity name, and then a semi colon. The second column displays how that entity appears in your browser. The proper character will only appear if you have a font that can display it. The third column contains the number reference for the same character in the form &#number;, that is, an ampersand, a hash symbol (which signals that a number reference is coming), the character's number, and then a semi colon. The fourth column shows how the number reference displays in your browser. Again, the proper character is only displayed if the default font selected in your browser preferences contains such a character.

The fifth column contains a description of the character, and an occasional note. You can either hover over the note link to see the note, or click it to go the notes page, which will open in a separate window.

There are many ways to order character entities. You can order them alphabetically, by number, or by Unicode collection, to mention just a few methods. I find all of these rather arbitrary. So, I have taken the liberty of classifying them into what I consider logical categories, and sometimes subcategories, and then by alphabetical order. I hope you find it useful. And don't forget, you can always use your browser's Find command to find a particular word or phrase within this page.

For more information on how to use these entities in your Web pages, see HTML, XHTML, and CSS, Sixth Edition by Elizabeth Castro.

Entities for characters with special meaning in HTML and XHTML

Entity Entity
Displayed
Number Entity
Displayed
Description  
& & & & ampersand
> > > > greater-than sign 大于
&lt; < &#60; < less-than sign 小于
&quot; " &#34; " quotation mark = APL quote 引号

Entities for accented characters, accents, and other diacritics from Western European Languages

Entity Entity
Displayed
Number Entity
Displayed
Description  
&acute; ´ &#180; ´ acute accent = spacing acute 重音=间隔重音
&cedil; ¸ &#184; ¸ cedilla = spacing cedilla 变音
&circ; ˆ &#710; ˆ modifier letter circumflex accent 修饰字母声调重音
&macr; ¯ &#175; ¯ macron = spacing macron = overline = APL overbar 长音=间隔长音=上划线
&middot; · &#183; · middle dot = Georgian comma = Greek middle dot 中间点号=Georgian逗号
&tilde; ˜ &#732; ˜ small tilde 小颚化
&uml; ¨ &#168; ¨ diaeresis = spacing diaeresis 分音
&Aacute; Á &#193; Á latin capital letter A with acute 带有重音符号的拉丁大写字母
&aacute; á &#225; á latin small letter a with acute  
&Acirc; Â &#194; Â latin capital letter A with circumflex 带有声调符号拉丁大写字母
&acirc; â &#226; â latin small letter a with circumflex  
&AElig; Æ &#198; Æ latin capital letter AE = latin capital ligature AE 拉丁大写字母AE
&aelig; æ &#230; æ latin small letter ae = latin small ligature ae  
&Agrave; À &#192; À latin capital letter A with grave = latin capital letter A grave 带有抑音符号的大写字母A
&agrave; à &#224; à latin small letter a with grave = latin small letter a grave  
&Aring; Å &#197; Å latin capital letter A with ring above = latin capital letter A ring 上面带有圆圈的大写字母A
&aring; å &#229; å latin small letter a with ring above = latin small letter a ring  
&Atilde; Ã &#195; Ã latin capital letter A with tilde 带有颚化符号的大写字母A
&atilde; ã &#227; ã latin small letter a with tilde  
&Auml; Ä &#196; Ä latin capital letter A with diaeresis 带有分音符号的大写字母A
&auml; ä &#228; ä latin small letter a with diaeresis  
&Ccedil; Ç &#199; Ç latin capital letter C with cedilla 带有变音符号的拉丁大写字母C
&ccedil; ç &#231; ç latin small letter c with cedilla  
&Eacute; É &#201; É latin capital letter E with acute  
&eacute; é &#233; é latin small letter e with acute  
&Ecirc; Ê &#202; Ê latin capital letter E with circumflex  
&ecirc; ê &#234; ê latin small letter e with circumflex  
&Egrave; È &#200; È latin capital letter E with grave  
&egrave; è &#232; è latin small letter e with grave  
&ETH; Ð &#208; Ð latin capital letter ETH 拉丁大写字母EDH
&eth; ð &#240; ð latin small letter eth 拉丁小写字母edh
&Euml; Ë &#203; Ë latin capital letter E with diaeresis  
&euml; ë &#235; ë latin small letter e with diaeresis  
&Iacute; Í &#205; Í latin capital letter I with acute  
&iacute; í &#237; í latin small letter i with acute  
&Icirc; Î &#206; Î latin capital letter I with circumflex  
&icirc; î &#238; î latin small letter i with circumflex  
&Igrave; Ì &#204; Ì latin capital letter I with grave  
&igrave; ì &#236; ì latin small letter i with grave  
&Iuml; Ï &#207; Ï latin capital letter I with diaeresis  
&iuml; ï &#239; ï latin small letter i with diaeresis  
&Ntilde; Ñ &#209; Ñ latin capital letter N with tilde  
&ntilde; ñ &#241; ñ latin small letter n with tilde  
&Oacute; Ó &#211; Ó latin capital letter O with acute  
&oacute; ó &#243; ó latin small letter o with acute  
&Ocirc; Ô &#212; Ô latin capital letter O with circumflex  
&ocirc; ô &#244; ô latin small letter o with circumflex  
&OElig; Œ &#338; Œ latin capital ligature OE 拉丁大写连音OE
&oelig; œ &#339; œ latin small ligature oe (note) 拉丁小写连音oe
&Ograve; Ò &#210; Ò latin capital letter O with grave  
&ograve; ò &#242; ò latin small letter o with grave  
&Oslash; Ø &#216; Ø latin capital letter O with stroke = latin capital letter O slash 带有斜杠的拉丁大字字母O
&oslash; ø &#248; ø latin small letter o with stroke, = latin small letter o slash  
&Otilde; Õ &#213; Õ latin capital letter O with tilde  
&otilde; õ &#245; õ latin small letter o with tilde  
&Ouml; Ö &#214; Ö latin capital letter O with diaeresis  
&ouml; ö &#246; ö latin small letter o with diaeresis  
&Scaron; Š &#352; Š latin capital letter S with caron 带有caron的拉丁大写字母S
&scaron; š &#353; š latin small letter s with caron  
&szlig; ß &#223; ß latin small letter sharp s = ess-zed  
&THORN; Þ &#222; Þ latin capital letter THORN  
&thorn; þ &#254; þ latin small letter thorn  
&Uacute; Ú &#218; Ú latin capital letter U with acute  
&uacute; ú &#250; ú latin small letter u with acute  
&Ucirc; Û &#219; Û latin capital letter U with circumflex  
&ucirc; û &#251; û latin small letter u with circumflex  
&Ugrave; Ù &#217; Ù latin capital letter U with grave  
&ugrave; ù &#249; ù latin small letter u with grave  
&Uuml; Ü &#220; Ü latin capital letter U with diaeresis  
&uuml; ü &#252; ü latin small letter u with diaeresis  
&Yacute; Ý &#221; Ý latin capital letter Y with acute  
&yacute; ý &#253; ý latin small letter y with acute  
&yuml; ÿ &#255; ÿ latin small letter y with diaeresis  
&Yuml; Ÿ &#376; Ÿ latin capital letter Y with diaeresis  

Entities for punctuation characters

Entity Entity
Displayed
Number Entity
Displayed
Description  
&cent; ¢ &#162; ¢ cent sign 美分
&curren; ¤ &#164; ¤ currency sign 货币
&euro; &#8364; euro sign 欧元
&pound; £ &#163; £ pound sign 英镑
&yen; ¥ &#165; ¥ yen sign = yuan sign 人民币=日元
&brvbar; ¦ &#166; ¦ broken bar = broken vertical bar 竖杠=竖直杠
&bull; &#8226; bullet = black small circle (note) 着重号=黑色小圆点号
&copy; © &#169; © copyright sign 版权符号
&dagger; &#8224; dagger 剑号
&Dagger; &#8225; double dagger 双剑号
&frasl; &#8260; fraction slash 分数斜杠
&hellip; &#8230; horizontal ellipsis = three dot leader 水平省略号
&iexcl; ¡ &#161; ¡ inverted exclamation mark 倒置惊叹号
&image; &#8465; blackletter capital I = imaginary part 黑体大写I=虚数部分
&iquest; ¿ &#191; ¿ inverted question mark = turned question mark 倒置问号
&lrm; &#8206; left-to-right mark (for formatting only)  
&mdash; &#8212; em dash 长连字符

&ndash; &#8211; en dash 短連字符
&not; ¬ &#172; ¬ not sign 非符号
&oline; &#8254; overline = spacing overscore 上划线=间隔顶上划线
&ordf; ª &#170; ª feminine ordinal indicator 阴性序数指示符
&ordm; º &#186; º masculine ordinal indicator 阳性序数指示符
&para; &#182; pilcrow sign = paragraph sign 段落符号
&permil; &#8240; per mille sign 千分号
&prime; &#8242; prime = minutes = feet 撇号=分=英尺
&Prime; &#8243; double prime = seconds = inches 双撇号=秒=英寸
&real; &#8476; blackletter capital R = real part symbol 黑体大写R=实数部分符号
&reg; ® &#174; ® registered sign = registered trade mark sign 注册符号
&rlm; &#8207; right-to-left mark (for formatting only)  
&sect; § &#167; § section sign 小节符号
&shy; ­ &#173; ­ soft hyphen = discretionary hyphen (displays incorrectly on Mac) 软数字符
&sup1; ¹ &#185; ¹ superscript one = superscript digit one 上标1

&trade; &#8482; trade mark sign 商标符号
&weierp; &#8472; script capital P = power set = Weierstrass p 手写体大写P=幂集
&bdquo; &#8222; double low-9 quotation mark  
&laquo; « &#171; « left-pointing double angle quotation mark = left pointing guillemet 左向双低引号
&ldquo; &#8220; left double quotation mark  
&lsaquo; &#8249; single left-pointing angle quotation mark (note)  
&lsquo; &#8216; left single quotation mark  
&raquo; » &#187; » right-pointing double angle quotation mark = right pointing guillemet  
&rdquo; &#8221; right double quotation mark  
&rsaquo; &#8250; single right-pointing angle quotation mark (note)  
&rsquo; &#8217; right single quotation mark  
&sbquo; &#8218; single low-9 quotation mark  
&emsp; &#8195; em space 双倍间距
&ensp; &#8194; en space 单倍间距
&nbsp;   &#160;   no-break space = non-breaking space 不中断间距
&thinsp; &#8201; thin space 薄间距
&zwj; &#8205; zero width joiner 零宽连结符
&zwnj; &#8204; zero width non-joiner 零宽非连轴结符

Entities for mathematical and technical characters (including Greek)

Entity Entity
Displayed
Number Entity
Displayed
Description  
&deg; ° &#176; ° degree sign
&divide; ÷ &#247; ÷ division sign 除号
&frac12; ½ &#189; ½ vulgar fraction one half = fraction one half 二分之一
&frac14; ¼ &#188; ¼ vulgar fraction one quarter = fraction one quarter  
&frac34; ¾ &#190; ¾ vulgar fraction three quarters = fraction three quarters 大于或等于
&ge; &#8805; greater-than or equal to  
&le; &#8804; less-than or equal to  
&minus; &#8722; minus sign  
&sup2; ² &#178; ² superscript two = superscript digit two = squared  
&sup3; ³ &#179; ³ superscript three = superscript digit three = cubed  
&times; × &#215; × multiplication sign  
&alefsym; &#8501; alef symbol = first transfinite cardinal (note) 第一超穷基数
&and; &#8743; logical and = wedge 逻辑与=楔形符号
&ang; &#8736; angle
&asymp; &#8776; almost equal to = asymptotic to 约等于号=渐进
&cap; &#8745; intersection = cap 交集=帽形符号
&cong; &#8773; approximately equal to 近似等于号
&cup; &#8746; union = cup 并集=杯形符号
&empty; &#8709; empty set = null set = diameter 空集=零集=直径
&equiv; &#8801; identical to 全等于号
&exist; &#8707; there exists 存在
&fnof; ƒ &#402; ƒ latin small f with hook = function = florin 无穷
&forall; &#8704; for all 对于所有的
&infin; &#8734; infinity 无穷
&int; &#8747; integral 积分
&isin; &#8712; element of ...的元素(属于)
&lang; &#9001; left-pointing angle bracket = bra (note) 左向尖括号=左矢
&lceil; &#8968; left ceiling = apl upstile 左上限=上角括号
&lfloor; &#8970; left floor = apl downstile 左下限=下角括号
&lowast; &#8727; asterisk operator 星号
&micro; µ &#181; µ micro sign 微符号
&nabla; &#8711; nabla = backward difference 微分算符=劈形算符
&ne; &#8800; not equal to 不等于号
&ni; &#8715; contains as member (note) 包含成员
&notin; &#8713; not an element of 不是...的元素
&nsub; &#8836; not a subset of 不是...的子集
&oplus; &#8853; circled plus = direct sum 圆圈加号=直接和
&or; &#8744; logical or = vee 逻辑或
&otimes; &#8855; circled times = vector product 圆圈乘号=矢积
&part; &#8706; partial differential 偏微分
&perp; &#8869; up tack = orthogonal to = perpendicular 向上图钉符号=正交=垂直
&plusmn; ± &#177; ± plus-minus sign = plus-or-minus sign 加减号=加或减号
&prod; &#8719; n-ary product = product sign (note) n元乘积=乘积符号
&prop; &#8733; proportional to 成比例
&radic; &#8730; square root = radical sign 平方根=根号
&rang; &#9002; right-pointing angle bracket = ket (note) 右向尖括号=右矢
&rceil; &#8969; right ceiling 右上限
&rfloor; &#8971; right floor 右下限
&sdot; &#8901; dot operator (note) 点操作符
&sim; &#8764; tilde operator = varies with = similar to (note) 代字符号=随...变化=类似于
&sub; &#8834; subset of ...的子集
&sube; &#8838; subset of or equal to ...的子集或等于
&sum; &#8721; n-ary sumation (note) n元总和
&sup; &#8835; superset of (note) ...的超集
&supe; &#8839; superset of or equal to ...的超集或等于
&there4; &#8756; therefore 所以
&Alpha; Α &#913; Α greek capital letter alpha  
&alpha; α &#945; α greek small letter alpha  
&Beta; Β &#914; Β greek capital letter beta  
&beta; β &#946; β greek small letter beta  
&Chi; Χ &#935; Χ greek capital letter chi  
&chi; χ &#967; χ greek small letter chi  
&Delta; Δ &#916; Δ greek capital letter delta  
&delta; δ &#948; δ greek small letter delta  
&Epsilon; Ε &#917; Ε greek capital letter epsilon  
&epsilon; ε &#949; ε greek small letter epsilon  
&Eta; Η &#919; Η greek capital letter eta  
&eta; η &#951; η greek small letter eta  
&Gamma; Γ &#915; Γ greek capital letter gamma  
&gamma; γ &#947; γ greek small letter gamma  
&Iota; Ι &#921; Ι greek capital letter iota  
&iota; ι &#953; ι greek small letter iota  
&Kappa; Κ &#922; Κ greek capital letter kappa  
&kappa; κ &#954; κ greek small letter kappa  
&Lambda; Λ &#923; Λ greek capital letter lambda  
&lambda; λ &#955; λ greek small letter lambda  
&Mu; Μ &#924; Μ greek capital letter mu  
&mu; μ &#956; μ greek small letter mu  
&Nu; Ν &#925; Ν greek capital letter nu  
&nu; ν &#957; ν greek small letter nu  
&Omega; Ω &#937; Ω greek capital letter omega  
&omega; ω &#969; ω greek small letter omega  
&Omicron; Ο &#927; Ο greek capital letter omicron  
&omicron; ο &#959; ο greek small letter omicron  
&Phi; Φ &#934; Φ greek capital letter phi  
&phi; φ &#966; φ greek small letter phi  
&Pi; Π &#928; Π greek capital letter pi  
&pi; π &#960; π greek small letter pi  
&piv; ϖ &#982; ϖ greek pi symbol  
&Psi; Ψ &#936; Ψ greek capital letter psi  
&psi; ψ &#968; ψ greek small letter psi  
&Rho; Ρ &#929; Ρ greek capital letter rho  
&rho; ρ &#961; ρ greek small letter rho  
&Sigma; Σ &#931; Σ greek capital letter sigma  
&sigma; σ &#963; σ greek small letter sigma  
&sigmaf; ς &#962; ς greek small letter final sigma (note)  
&Tau; Τ &#932; Τ greek capital letter tau  
&tau; τ &#964; τ greek small letter tau  
&Theta; Θ &#920; Θ greek capital letter theta  
&theta; θ &#952; θ greek small letter theta  
&thetasym; ϑ &#977; ϑ greek small letter theta symbol  
&upsih; ϒ &#978; ϒ greek upsilon with hook symbol  
&Upsilon; Υ &#933; Υ greek capital letter upsilon  
&upsilon; υ &#965; υ greek small letter upsilon  
&Xi; Ξ &#926; Ξ greek capital letter xi  
&xi; ξ &#958; ξ greek small letter xi  
&Zeta; Ζ &#918; Ζ greek capital letter zeta  
&zeta; ζ &#950; ζ greek small letter zeta  

Entities for shapes and arrows

Entity Entity
Displayed
Number Entity
Displayed
Description  
&crarr; &#8629; downwards arrow with corner leftwards = carriage return 下折左箭头=回车
&darr; &#8595; downwards arrow 下箭头
&dArr; &#8659; downwards double arrow 下双箭头
&harr; &#8596; left right arrow 左右箭头
&hArr; &#8660; left right double arrow 左右双箭头
&larr; &#8592; leftwards arrow 左箭头
&lArr; &#8656; leftwards double arrow (note) 左双箭头
&rarr; &#8594; rightwards arrow 右箭头
&rArr; &#8658; rightwards double arrow (note) 右双箭头
&uarr; &#8593; upwards arrow 上箭头
&uArr; &#8657; upwards double arrow 上双箭头
&clubs; &#9827; black club suit = shamrock 黑梅花=三叶草
&diams; &#9830; black diamond suit 黑方块
&hearts; &#9829; black heart suit = valentine 黑红心=情人卡
&spades; &#9824; black spade suit (note) 黑桃
&loz; &#9674; lozenge 菱形

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The layout of this document is copyright © 2002 Elizabeth Castro. Please don't copy this document. Instead link to it. Thanks!