Other Mathematical Symbols These symbols have numeric codes only. Character Name Character Entity Hex Entity MINUS-OR-PLUS SIGN ∓ ∓ &#x2213 DOT PLUS ∔ ∔ &#x2214 ASTERISK OPERATOR ∗ ∗ &#x2217 RING OPERATOR ∘ ∘ &#x2218 BULLET OPERATOR ∙ ∙ &#x2219 PROPORTIONAL TO ∝ ∝ &#x221D RATIO ∶ ∶ &#x2236 PROPORTION ∷ ∷ &#x2237 DOT MINUS ∸ ∸ &am...

Logic & Set Theory -- means no HTML entity code exists and that a numeric code must be used. Mac Keyboard Option: Penn State also offers a Logic Keyboard for the Macintosh which enables users to enter logic and mathematical symbols from a keyboard. Character Name Character Entity Num Entity Hex Entity FOR ALL (Upside-down A) ∀ ∀ ∀ &#x2200 COMPLEMENT (Thin C) ∁ -- ∁ &#x2201 THERE EXISTS (Backwards E...

被上标给折腾的 只是想给计算出的面积加上平方的上标 可惜不知道 还楞是搜不到 最后想这些特殊字符的核心code应该是一样的吧 就用html里的平方上标code换成C#的转义字符 居然成了 囧··· 时间大把流逝··· 具体是这么用这个表的： 比如想显示∞（根号无穷） 在表中找到∞ 及其HexEntity &#x221E （HTML中可以直接用） 在C#中需要用转义符 即x221E 再比如在C#中表示平方上标 即用x00b2 Common Arithmetic & Alebgra Character Name Character Entity Num Entity Hex Entity ...