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Các ký tự toán học trong bảng mã Unicode

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∀ ∁ ∂ ∃ ∄ ∅ ∆ ∇ ∈ ∉ ∊ ∋ ∌ ∍ ∎ ∏
∐ ∑ − ∓ ∔ ∕ ∖ ∗ ∘ ∙ √ ∛ ∜ ∝ ∞ ∟
∠ ∡ ∢ ∣ ∤ ∥ ∦ ∧ ∨ ∩ ∪ ∫ ∬ ∭ ∮ ∯
∰ ∱ ∲ ∳ ∴ ∵ ∶ ∷ ∸ ∹ ∺ ∻ ∼ ∽ ∾ ∿
≀ ≁ ≂ ≃ ≄ ≅ ≆ ≇ ≈ ≉ ≊ ≋ ≌ ≍ ≎ ≏
≐ ≑ ≒ ≓ ≔ ≕ ≖ ≗ ≘ ≙ ≚ ≛ ≜ ≝ ≞ ≟
≠ ≡ ≢ ≣ ≤ ≥ ≦ ≧ ≨ ≩ ≪ ≫ ≬ ≭ ≮ ≯
≰ ≱ ≲ ≳ ≴ ≵ ≶ ≷ ≸ ≹ ≺ ≻ ≼ ≽ ≾ ≿
⊀ ⊁ ⊂ ⊃ ⊄ ⊅ ⊆ ⊇ ⊈ ⊉ ⊊ ⊋ ⊌ ⊍ ⊎ ⊏
⊐ ⊑ ⊒ ⊓ ⊔ ⊕ ⊖ ⊗ ⊘ ⊙ ⊚ ⊛ ⊜ ⊝ ⊞ ⊟
⊠ ⊡ ⊢ ⊣ ⊤ ⊥ ⊦ ⊧ ⊨ ⊩ ⊪ ⊫ ⊬ ⊭ ⊮ ⊯
⊰ ⊱ ⊲ ⊳ ⊴ ⊵ ⊶ ⊷ ⊸ ⊹ ⊺ ⊻ ⊼ ⊽ ⊾ ⊿
⋀ ⋁ ⋂ ⋃ ⋄ ⋅ ⋆ ⋇ ⋈ ⋉ ⋊ ⋋ ⋌ ⋍ ⋎ ⋏
⋐ ⋑ ⋒ ⋓ ⋔ ⋕ ⋖ ⋗ ⋘ ⋙ ⋚ ⋛ ⋜ ⋝ ⋞ ⋟
⋠ ⋡ ⋢ ⋣ ⋤ ⋥ ⋦ ⋧ ⋨ ⋩ ⋪ ⋫ ⋬ ⋭ ⋮ ⋯

Codes for Common Math Symbols
TÊN KÝ TỰ KÝ TỰ Entity Num
Entity
Hex 
Entity





LESS THAN OR EQUAL TO ≤ ≤ ≤
GREATER THAN OR EQUAL TO ≥ ≥ ≥
PLUS OR MINUS ± ± ± ±
NOT EQUALS ≠ ≠ ≠
DIVISION SIGN ÷ ÷ ÷ ÷
TIMES X × × × ×
MINUS − − −
DIVISION SLASH -- ∕ ∕
FRACTION SLASH &frasl ⁄ ⁄
SQUARE ROOT RADICAL √ √ √
CUBE ROOT -- ∛ &#x221B
FOURTH ROOT -- ∜ &#x221C
INFINITY ∞ ∞ ∞
ALEF INFINITY SYMBOL ℵ ℵ ℵ
FUNCTION ITALIC F ƒ ƒ ƒ ƒ
PRIME (single quote) ′ ′ ′
DOUBLE PRIME (double quote) ″ ″ ″
TRIPLE PRIME (triple quote) -- ‴ ‴
THEREFORE (Triangular Dots) ∴ ∴ ∴
DOT OPERATOR ⋅ ⋅ &#x22C5
SUPERSCRIPT TWO ¹ ¹ ¹ ¹
SUPERSCRIPT TWO ² ² ² ²
SUPERSCRIPT THREE ³ ³ ³ ³




LEFT CEILING BRACKET ⌈ ⌈ ⌈
RIGHT CEILING BRACKET ⌉ ⌉ ⌉
LEFT FLOOR BRACKET ⌈ ⌊ ⌊
RIGHT FLOOR BRACKET ⌉ ⌋ ⌋
CIRCLED PLUS (Direct Sum) ⊕ ⊕ &#x2295
CIRCLED TIMES (Vector Product) ⊗ ⊗ &#x2297
Additional Calculus Symbols
TÊN KÝ TỰ KÝ TỰ Num
Entity
Hex 
Entity
DOUBLE INTEGRAL ∬ &#x222C
TRIPLE INTEGRAL ∭ &#x222D
QUADRUPLE INTEGRAL ⨌ &#x2A0C
CONTOUR INTEGRAL ∮ &#x222E
SURFACE INTEGRAL ∯ &#x222F
VOLUME INTEGRAL ∰ &#x2230
CLOCKWISE INTEGRAL ∱ &#x2231
ANTICLOCKWISE INTEGRAL ⨑ &#x2A11
CLOCKWISE CONTOUR INTEGRAL ∲ &#x2232
ANTICLOCKWISE CONTOUR INTEGRAL ∳ &#x2233

Common Letter Symbols
TÊN KÝ TỰ KÝ TỰ Entity Num
Entity
Hex 
Entity
INFINITY (Sideways 8) ∞ ∞ ∞
ALEF INFINITY SYMBOL ℵ ℵ ℵ
WEIERSTRASS POWER SET (Script Capital P) ℘ ℘ ℘
IMAGINARY NUMBER (Blackletter I) ℑ ′ ′
REAL NUMBER (Blackletter I) ℜCapital P R I M E ′ ′
DOUBLE-STRUCK REAL NUMBER (Double R) -- ℝ ℝ
COMPLEX NUMBERS (Double C) -- ℂ ℂ
NATURAL NUMBERS (Double N) -- ℕ ℕ
PRIME NUMBERS (Double P) -- ℙ ℙ
RATIONAL NUMBERS (Double Q) -- ℚ ℚ
INTEGERS (Double Z) -- ℤ ℤ


Codes for Logic and Set Theory Symbols
TÊN KÝ TỰ KÝ TỰ Entity Num
Entity
Hex
Entity
FOR ALL (Upside-down A) ∀  ∀ &#x2200
COMPLEMENT (Thin C) -- ∁ &#x2201
THERE EXISTS (Backwards E) ∃  ∃ &#x2203
THERE DOES NOT EXIST (Backwards E with slash) -- ∄ &#x2204
EMPTY SET (O slash) ∅  ∅ &#x2205
NOT SYMBOL (Corner) ¬ ¬  ¬ ¬
TILDE (Alternate Not Symbol) ˜ ˜  -- --
LOGICAL AND (Wedge or Upside down V Symbol) ∧  ∧ &#x2227
LOGICAL OR (V Symbol) ∨  ∨ &#x2228
XOR -- ⊻ &#x22BB
NAND -- ⊼ &#x22BC
NOR -- ⊽ &#x22BD
INTERSECTION (Cap or Upside Down U) ∩  ∩ &#x2229
UNION (Cup or U Symbol) ∪  ∪ &#x222A
ELEMENT OF ∈  ∈ &#x2208
NOT AN ELEMENT OF ∉  ∉ &#x2209
SMALL ELEMENT OF -- ∊ &#x220A
CONTAINS AS MEMBER ∋  ∋ &#x220B
DOES NOT CONTAIN AS MEMBER -- ∌ &#x220C
SMALL CONTAINS AS MEMBER -- ∍ &#x220D
SET MINUS -- ∖ &#x2216
SUBSET OF (Sideways U with cap to left) ⊂  ⊂ &#x2282
SUPERSET OF (Sideways U with cap to right) ⊃  ⊃ &#x2283
NOT A SUBSET OF (Subset with Slash) ⊄  ⊄ &#x2284
NOT A SUPERSET OF (Superset with slash) -- ⊅ &#x2285
SUBSET OF OR EQUAL TO (Subset with line below) ⊆  ⊆ &#x2286
SUPERSET OF OR EQUAL TO (Superset with line below) ⊇  ⊇ &#x2287
NEITHER A SUBSET OF NOR EQUAL TO -- ⊈ &#x2288
NEITHER A SUPERSET OF NOR EQUAL TO -- ⊉ &#x2289
SUBSET OF WITH NOT EQUAL TO -- ⊊ &#x228A
SUPERSET OF WITH NOT EQUAL TO -- ⊋ &#x228B
DIAMOND OPERATOR 
(Possibility)
-- ⋄ &#x22C4
ASYMPTOTICALLY EQUAL TO
One to one Correspondence
-- ≃ &#x2243
NOT ASYMPTOTICALLY EQUAL TO -- ≄ &#x2244
MULTISET (U with arrow) -- ⊌ &#x228C
MULTISET MULTIPLICATION (U with dot in center) -- ⊍ &#x228D
MULTISET UNION (U with plus in center) -- ⊎ &#x228E
DOUBLE SUBSET -- ⋐ &#x22D0
DOUBLE SUPERSET -- ⋑ &#x22D1
DOUBLE INTERSECTION -- ⋒ &#x22D2
DOUBLE UNION -- ⋓ &#x22D3
N-ARY LOGICAL AND -- ⋀ &#x22C0
N-ARY LOGICAL OR -- ⋁ &#x22C1
N-ARY INTERSECTION/td> -- ⋂ &#x22C2
N-ARY UNION -- ⋃ &#x22C3
CURLY LOGICAL OR -- ⋎ &#x22CE
CURLY LOGICAL AND -- ⋏ &#x22CF
CIRCLED PLUS (Direct Sum) ⊕ ⊕ &#x2295
CIRCLED TIMES (Vector Product) ⊗ ⊗ &#x2297
CIRCLED MINUS -- ⊖ &#x2296
CIRCLED DIVISION SLASH -- ⊘ &#x2298


TÊN KÝ TỰ KÝ TỰ Num
Entity
Hex 
Entity
STRICTLY EQUIVALENT TO ≣ &#x2263
NOT IDENTICAL TO ≢ &#x2262
LESS-THAN OVER EQUAL TO ≦ &#x2266
GREATER-THAN OVER EQUAL TO ≧ &#x2267
LESS-THAN BUT NOT EQUAL TO ≨ &#x2268
GREATER-THAN BUT NOT EQUAL TO ≩ &#x2269
MUCH LESS-THAN ≪ &#x226A
MUCH GREATER-THAN ≫ &#x226B
BETWEEN ≬ &#x226C
NOT EQUIVALENT TO ≭ &#x226D
NOT LESS-THAN ≮ &#x226E
NOT GREATER-THAN ≯ &#x226F
NEITHER LESS-THAN NOR EQUAL TO ≰ &#x2270
NEITHER GREATER-THAN NOR EQUAL TO ≱ &#x2271
LESS-THAN OR EQUIVALENT TO ≲ &#x2272
GREATER-THAN OR EQUIVALENT TO ≳ &#x2273
NEITHER LESS-THAN NOR EQUIVALENT TO ≴ &#x2274
NEITHER GREATER-THAN NOR EQUIVALENT TO ≵ &#x2275
LESS-THAN OR GREATER-THAN ≶ &#x2276
GREATER-THAN OR LESS-THAN ≷ &#x2277
NEITHER LESS-THAN NOR GREATER-THAN ≸ &#x2278
NEITHER GREATER-THAN NOR LESS-THAN ≹ &#x2279
NOT TILDE ≁ &#x2241
MINUS TILDE ≂ &#x2242
ASYMPTOTICALLY EQUAL TO ≃ &#x2243
NOT ASYMPTOTICALLY EQUAL TO ≄ &#x2244
APPROXIMATELY BUT NOT ACTUALLY EQUAL TO ≆ &#x2246
NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TO ≇ &#x2247
NOT ALMOST EQUAL TO ≉ &#x2249
ALMOST EQUAL OR EQUAL TO ≊ &#x224A
TRIPLE TILDE ≋ &#x224B
ALL EQUAL TO ≌ &#x224C
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