Description |
Symbol |
HTML Entity |
HTML Decimal Code |
HTML Hex Code |
For all (universal quantifier) |
∀ |
∀ |
∀ |
∀ |
There exists (existential quantifier) |
∃ |
∃ |
∃ |
∃ |
There does not exist |
∄ |
-- |
∄ |
∄ |
Empty set (null set; diameter) |
∅ |
∅ |
∅ |
∅ |
Complement |
∁ |
-- |
∁ |
∁ |
Intersection (cap) |
∩ |
∩ |
∩ |
∩ |
Union (cup) |
∪ |
∪ |
∪ |
∪ |
Multiset (U with arrow) |
⊌ |
-- |
⊌ |
⊌ |
Multiset multiplication (U with dot in center) |
⊍ |
-- |
⊍ |
⊍ |
Multiset union (U with plus in center) |
⊎ |
-- |
⊎ |
⊎ |
Double subset |
⋐ |
-- |
⋐ |
⋐ |
Double superset |
⋑ |
-- |
⋑ |
⋑ |
Double intersection |
⋒ |
-- |
⋒ |
⋒ |
Double union |
⋓ |
-- |
⋓ |
⋓ |
Element of |
∈ |
∈ |
∈ |
∈ |
Not an element of |
∉ |
∉ |
∉ |
∉ |
Small element of |
∊ |
-- |
∊ |
∊ |
Contains as member (such that) |
∋ |
∋ |
∋ |
∋ |
Does not contain as member |
∌ |
-- |
∌ |
∌ |
Small contains as member |
∍ |
-- |
∍ |
∍ |
Set difference |
\ |
-- |
∖ |
∖ |
Subset of |
⊂ |
⊂ |
⊂ |
⊂ |
Superset of |
⊃ |
⊃ |
⊃ |
⊃ |
Not a subset of |
⊄ |
⊄ |
⊄ |
⊄ |
Not a superset of |
⊅ |
-- |
⊅ |
⊅ |
Subset of or equal to |
⊆ |
⊆ |
⊆ |
⊆ |
Superset of or equal to |
⊇ |
⊇ |
⊇ |
⊇ |
Neither a subset of nor equal to |
⊈ |
-- |
⊈ |
⊈ |
Neither a superset of or equal to |
⊉ |
-- |
⊉ |
⊉ |
Subset of with not equal to |
⊊ |
-- |
⊊ |
⊊ |
Subset of with not equal to |
⊋ |
-- |
⊋ |
⊋ |
N-ary product (product sign) |
∏ |
∏ |
∏ |
∏ |
N-ary co-product |
∐ |
-- |
∐ |
∐ |
N-ary summation |
∑ |
∑ |
∑ |
∑ |
Square root (radical sign) |
√ |
√ |
√ |
√ |
Cube root |
∛ |
-- |
∛ |
∛ |
Fourth root |
∜ |
-- |
∜ |
∜ |
Logical AND (conjunction) |
∧ |
∧ |
∧ |
∧ |
Logical OR (disjunction) |
∨ |
∨ |
∨ |
∨ |
XOR |
⊻ |
-- |
⊻ |
⊻ |
NAND |
⊼ |
-- |
⊼ |
⊼ |
NOR |
⊽ |
-- |
⊽ |
⊽ |
N-ary logical AND |
⋀ |
-- |
⋀ |
⋀ |
N-ary logical OR |
⋁ |
-- |
⋁ |
⋁ |
N-ary intersection |
⋂ |
-- |
⋂ |
⋂ |
N-ary union |
⋃ |
-- |
⋃ |
⋃ |
Curly logical OR |
⋎ |
-- |
⋎ |
⋎ |
Curly logical AND |
⋏ |
-- |
⋏ |
⋏ |
Negation |
¬ |
¬ |
¬ |
¬ |
Partial differential |
∂ |
∂ |
∂ |
࢚ |
Increment (difference) |
Δ |
δ |
∆ |
∆ |
Nabla (backward difference) |
∇ |
∇ |
∇ |
∇ |
Integral |
∫ |
∫ |
∫ |
∫ |
Double integral |
∬ |
-- |
∬ |
∬ |
Triple integral |
∭ |
-- |
∭ |
∭ |
Quadruple integral |
⨌ |
-- |
⨌ |
⨌ |
Contour integral |
∮ |
-- |
∮ |
∮ |
Surface integral |
∯ |
-- |
∯ |
∯ |
Volume integral |
∰ |
-- |
∰ |
∰ |
Clockwise integral |
∱ |
-- |
∱ |
∱ |
Anticlockwise integral |
⨑ |
-- |
⨑ |
⨑ |
Clockwise contour integral |
∲ |
-- |
∲ |
∲ |
Anticlockwise contour integral |
∳ |
-- |
∳ |
∳ |
Element of, with long horizontal stroke |
⋲ |
-- |
⋲ |
⋲ |
Element of, with vertical bar at end of horizontal stroke |
⋳ |
-- |
⋳ |
⋳ |
Small element of, with vertical bar at end of horizontal stroke |
⋴ |
-- |
⋴ |
⋴ |
Element of, with dot above |
⋵ |
-- |
⋵ |
⋵ |
Element of, with overbar |
⋶ |
-- |
⋶ |
⋶ |
Small element of, with overbar |
⋷ |
-- |
⋷ |
⋷ |
Element of, with underbar |
⋸ |
-- |
⋸ |
⋸ |
Element of, with two horizontal strokes |
⋹ |
-- |
⋹ |
⋹ |
Contains, with long horizontal stroke |
⋺ |
-- |
⋺ |
⋺ |
Contains, with vertical bar at end of horizontal stroke |
⋻ |
-- |
⋻ |
⋻ |
Small contains, with vertical bar at end of horizontal stroke |
⋼ |
-- |
⋼ |
⋼ |
Contains, with overbar |
⋽ |
-- |
⋽ |
⋽ |
Small contains, with overbar |
⋾ |
-- |
⋾ |
⋾ |
Notation bag membership |
⋿ |
-- |
⋿ |
⋿ |
Diamond operator (possibility) |
⋄ |
-- |
⋄ |
⋄ |
Dot operator |
⋅ |
-- |
⋅ |
⋅ |
Star operator |
⋆ |
-- |
⋆ |
⋆ |
Asterisk operator |
∗ |
∗ |
∗ |
∗ |
Therefore (conclusion) |
∴ |
∴ |
∴ |
∴ |
Because |
∵ |
-- |
∵ |
∵ |
Proportional to |
∝ |
∝ |
∝ |
∝ |
End of proof |
∎ |
-- |
∎ |
∎ |
Tilde operator (varies with; similar to) |
∼ |
∼ |
∼ |
∼ |
Reversed tilde |
∽ |
-- |
∽ |
∽ |
Reversed tilde equals |
⋍ |
-- |
⋍ |
⋍ |
Not tilde |
≁ |
-- |
≁ |
≁ |
Minus tilde |
≂ |
-- |
≂ |
≂ |
Not equivalent to |
≭ |
-- |
≭ |
≭ |
Approximately, but not actually equal to |
≆ |
-- |
≆ |
≆ |
Neither approximately nor actually equal to |
≇ |
-- |
≇ |
≇ |
Almost equal or equal to |
≊ |
-- |
≊ |
≊ |
Triple tilde |
≋ |
-- |
≋ |
≋ |
All equal to |
≌ |
-- |
≌ |
≌ |
Approximately equal to |
≅ |
≅ |
≅ |
≅ |
Almost equal to (asymptotic to) |
≈ |
≈ |
≈ |
≈ |
Asymptotically equal to |
≃ |
-- |
≃ |
≃ |
Not almost equal to |
≉ |
-- |
≉ |
≉ |
Not asymptotically equal to |
≄ |
-- |
≄ |
≄ |
Not equal to |
≠ |
≠ |
≠ |
≠ |
Identical to (equivalent) |
≡ |
≡ |
≡ |
≡ |
Not identical to |
≢ |
-- |
≢ |
≢ |
Strictly equivalent to |
≣ |
-- |
≣ |
≣ |
Not identical to |
≢ |
-- |
≢ |
≢ |
Between |
≬ |
-- |
≬ |
≬ |
Less than |
< |
< |
< |
< |
Greater than |
>> |
> |
> |
> |
Less than or equal to |
≤ |
≤ |
≤ |
≤ |
Greater than or equal to |
≥ |
≥ |
≥ |
≥ |
Much less than |
≪ |
-- |
≪ |
≪ |
Much greater than |
≫ |
-- |
≫ |
≫ |
Less than over equal to |
≦ |
-- |
≦ |
≦ |
Greater than over equal to |
≧ |
-- |
≧ |
≧ |
Less than but not equal to |
≨ |
-- |
≨ |
≨ |
Greater than but not equal to |
≩ |
-- |
≩ |
≩ |
Not less than |
≮ |
-- |
≮ |
≮ |
Not greater than |
≯ |
-- |
≯ |
≯ |
Neither less than nor equal to |
≰ |
-- |
≰ |
≰ |
Neither greater than nor equal to |
≱ |
-- |
≱ |
≱ |
Less than or equivalent to |
≲ |
-- |
≲ |
≲ |
Greater than or equivalent to |
≳ |
-- |
≳ |
≳ |
Neither less than nor equivalent to |
≴ |
-- |
≴ |
≴ |
Neither greater than nor equivalent to |
≵ |
-- |
≵ |
≵ |
Less than or greater than |
≶ |
-- |
≶ |
≶ |
Greater than or less than |
≷ |
-- |
≷ |
≷ |
Neither less than nor greater than |
≸ |
-- |
≸ |
≸ |
Neither greater than nor less than |
≹ |
-- |
≹ |
≹ |
Circled plus (direct sum) |
⊕ |
⊕ |
⊕ |
⊕ |
Circled times (vector product) |
⊗ |
⊗ |
⊗ |
⊗ |
Circled minus |
⊖ |
-- |
⊖ |
⊖ |
Circled division |
⊘ |
-- |
⊘ |
⊘ |
Circled dot operator |
⊙ |
-- |
⊙ |
⊙ |
Circled ring operator |
⊚ |
-- |
⊚ |
⊚ |
Circled asterisk operator |
⊛ |
-- |
⊛ |
⊛ |
Circled equals |
⊜ |
-- |
⊜ |
⊜ |
Circled dash |
⊝ |
-- |
⊝ |
⊝ |
Squared plus |
⊞ |
-- |
⊞ |
⊞ |
Squared minus |
⊟ |
-- |
⊟ |
⊟ |
Squared times |
⊠ |
-- |
⊠ |
⊠ |
Up tack (orthogonal to; perpendicular) |
⊥ |
⊥ |
⊥ |
⊥ |
Right tack |
⊢ |
-- |
⊢ |
⊢ |
Left tack |
⊣ |
-- |
⊣ |
⊣ |
Down tack |
⊤ |
-- |
⊤ |
⊤ |
Peirce arrow |
↓ |
↓ |
↓ |
↓ |
Scheffer stroke |
| |
-- |
| |
| |
Left ceiling |
⌈ |
⌈ |
⌈ |
⌈ |
Right ceiling |
⌉ |
⌉ |
⌉ |
⌉ |
Left floor |
⌊ |
⌊ |
⌊ |
⌊ |
Right floor |
⌋ |
⌋ |
⌋ |
⌋ |
Left angle bracket |
〈 |
⟨ |
〈 |
〈 |
Right angle bracket |
〉 |
⟩ |
〉 |
〉 |
Plus or minus |
± |
± |
± |
± |
Minus or plus |
∓ |
-- |
∓ |
∓ |
Multiplication sign |
× |
× |
× |
× |
Plus sign |
+ |
+ |
+ |
+ |
Minus sign |
– |
− |
− |
− |
Division sign |
÷ |
÷ |
÷ |
÷ |
Function |
⨍ |
ƒ |
ƒ |
ƒ |
Fraction slash |
/ |
⁄ |
⁄ |
⁄ |
Infinity |
∞ |
∞ |
∞ |
∞ |
Prime |
′ |
′ |
′ |
′ |
Double prime |
″ |
″ |
″ |
″ |
Triple prime |
‴ |
-- |
‴ |
‴ |
Degree |
° |
° |
° |
° |
Per cent |
% |
-- |
% |
% |
Per mille |
‰ |
‰ |
‰ |
‰ |
Angle |
∠ |
∠ |
∠ |
∠ |
Right angle |
∟ |
-- |
∟ |
∟ |
Measured angle |
∡ |
-- |
∡ |
∡ |
Spherical angle |
∢ |
-- |
∢ |
∢ |
Divides |
∣ |
-- |
∣ |
∣ |
Does not divide |
∤ |
-- |
∤ |
∤ |
Parallel to |
∥ |
-- |
∥ |
∥ |
Not parallel to |
∦ |
-- |
∦ |
∦ |
Right angle with arc |
⊾ |
-- |
⊾ |
⊾ |
Right triangle |
⊿ |
-- |
⊿ |
⊿ |
Dot plus |
∔ |
-- |
∔ |
∔ |
Ring operator |
∘ |
-- |
∘ |
∘ |
Bullet operator |
∙ |
-- |
∙ |
∙ |
Ratio |
∶ |
-- |
∶ |
∶ |
Proportion |
∷ |
-- |
∷ |
∷ |
Dot minus |
∸ |
-- |
∸ |
∸ |
Excess |
∹ |
-- |
∹ |
∹ |
Geometric proportion |
∺ |
-- |
∺ |
∺ |
Homothetic |
∻ |
-- |
∻ |
∻ |
Inverted lazy s |
∾ |
-- |
∾ |
∾ |
Sine wave |
∿ |
-- |
∿ |
∿ |
Wreath product |
≀ |
-- |
≀ |
≀ |
Equivalent to |
≍ |
-- |
≍ |
≍ |
Geometrically equivalent to |
≎ |
-- |
≎ |
≎ |
Difference between |
≏ |
-- |
≏ |
≏ |
Approaches the limit |
≐ |
-- |
≐ |
≐ |
Geometrically equal to |
≑ |
-- |
≑ |
≑ |
Approximately equal to or the image of |
≒ |
-- |
≒ |
≒ |
Image of or approximately equal to |
≓ |
-- |
≓ |
≓ |
Colon equals |
≔ |
-- |
≔ |
≔ |
Equals colon |
≕ |
-- |
≕ |
≕ |
Ring in equal to |
≖ |
-- |
≖ |
≖ |
Ring equal to |
≗ |
-- |
≗ |
≗ |
Corresponds to |
≘ |
-- |
≘ |
≘ |
Estimates |
≙ |
-- |
≙ |
≙ |
Equiangular to |
≚ |
-- |
≚ |
≚ |
Star equals |
≛ |
-- |
≛ |
≛ |
Delta equal to |
≜ |
-- |
≜ |
≜ |
Equal to by definition |
≝ |
-- |
≝ |
≝ |
Measured by |
≞ |
-- |
≞ |
≞ |
Questioned equal to |
≟ |
-- |
≟ |
≟ |
Precedes |
≺ |
-- |
≺ |
≺ |
Succeeds |
≻ |
-- |
≻ |
≻ |
Precedes or equal to |
≼ |
-- |
≼ |
≼ |
Succeeds or equal to |
≽ |
-- |
≽ |
≽ |
Precedes or equivalent to |
≾ |
-- |
≾ |
≾ |
Succeeds or equivalent to |
≿ |
-- |
≿ |
≿ |
Does not precede |
⊀ |
-- |
⊀ |
⊀ |
Does not succeed |
⊁ |
-- |
⊁ |
⊁ |
Square image of |
⊏ |
-- |
⊏ |
⊏ |
Square original of |
⊐ |
-- |
⊐ |
⊐ |
Square image of or equal to |
⊑ |
-- |
⊑ |
⊑ |
Square original of or equal to |
⊒ |
-- |
⊒ |
⊒ |
Square cap |
⊓ |
-- |
⊓ |
⊓ |
Square cup |
⊔ |
-- |
⊔ |
⊔ |
Squared dot operator |
⊪ |
-- |
⊪ |
⊪ |
Assertion |
⊦ |
-- |
⊦ |
⊦ |
Models |
⊧ |
-- |
⊧ |
⊧ |
True |
⊨ |
-- |
⊨ |
⊨ |
Forces |
⊩ |
-- |
⊩ |
⊩ |
Triple vertical bar right turnstile |
⊪ |
-- |
⊪ |
⊪ |
Double vertical bar double right turnstile |
⊫ |
-- |
⊫ |
⊫ |
Does not prove |
⊬ |
-- |
⊬ |
⊬ |
Not true |
⊭ |
-- |
⊭ |
⊭ |
Does not force |
⊮ |
-- |
⊮ |
⊮ |
Negated double vertical bar double right turnstile |
⊯ |
-- |
⊯ |
⊯ |
Precedes under relation |
⊰ |
-- |
⊰ |
⊰ |
Succeeds under relation |
⊱ |
-- |
⊱ |
⊱ |
Normal subgroup of |
⊲ |
-- |
⊲ |
⊲ |
Contains as normal subgroup |
⊳ |
-- |
⊳ |
⊳ |
Normal subgroup of or equal to |
⊴ |
-- |
⊴ |
⊴ |
Contains as normal subgroup or equal to |
⊵ |
-- |
⊵ |
⊵ |
Original of |
⊶ |
-- |
⊶ |
⊶ |
Image of |
⊷ |
-- |
⊷ |
⊷ |
Multimap |
⊸ |
-- |
⊸ |
⊸ |
Hermitian conjugate matrix |
⊹ |
-- |
⊹ |
⊹ |
Intercalate |
⊺ |
-- |
⊺ |
⊺ |
Division times |
⋇ |
-- |
⋇ |
⋇ |
Bowtie |
⋈ |
-- |
⋈ |
⋈ |
Left normal factor semi-direct product |
⋉ |
-- |
⋉ |
⋉ |
Right normal factor semi-direct product |
⋊ |
-- |
⋊ |
⋊ |
Left semi-direct product |
⋋ |
-- |
⋋ |
⋋ |
Right semi-direct product |
⋌ |
-- |
⋌ |
⋌ |
Pitchfork |
⋔ |
-- |
⋔ |
⋔ |
Equal and parallel to |
⋕ |
-- |
⋕ |
⋕ |
Less than with dot |
⋖ |
-- |
⋖ |
⋖ |
Greater than with dot |
⋗ |
-- |
⋗ |
⋗ |
Very much less than |
⋘ |
-- |
⋘ |
⋘ |
Very much greater than |
⋙ |
-- |
⋙ |
⋙ |
Less than, equal to, or greater than |
⋚ |
-- |
⋚ |
⋚ |
Greater than, equal to, or less than |
⋛ |
-- |
⋛ |
⋛ |
Equal to or less than |
⋜ |
-- |
⋜ |
⋜ |
Equal to or greater than |
⋝ |
-- |
⋝ |
⋝ |
Equal to or precedes |
⋞ |
-- |
⋞ |
⋞ |
Equal to or succeeds |
⋟ |
-- |
⋟ |
⋟ |
Does not precede or equal |
⋠ |
-- |
⋠ |
⋠ |
Does not succeed or equal |
⋡ |
-- |
⋡ |
⋡ |
Not square image of or equal to |
⋢ |
-- |
⋢ |
⋢ |
Not square original of or equal to |
⋣ |
-- |
⋣ |
⋣ |
Square image of or not equal to |
⋤ |
-- |
⋤ |
⋤ |
Square original of or not equal to |
⋥ |
-- |
⋥ |
⋥ |
Less than but not equivalent to |
⋦ |
-- |
⋦ |
⋦ |
Greater than but not equivalent to |
⋧ |
-- |
⋧ |
⋧ |
Precedes but not equivalent to |
⋨ |
-- |
⋨ |
⋨ |
Succeeds but not equivalent to |
⋩ |
-- |
⋩ |
⋩ |
Not a normal subgroup of |
⋪ |
-- |
⋪ |
⋪ |
Does not contain as a normal subgroup |
⋫ |
-- |
⋫ |
⋫ |
Not a normal subgroup of or equal to |
⋬ |
-- |
⋬ |
⋬ |
Does not contain as a normal subgroup or equal |
⋭ |
-- |
⋭ |
⋭ |
Vertical ellipsis |
⋮ |
-- |
⋮ |
⋮ |
Midline horizontal ellipsis |
⋯ |
-- |
⋯ |
⋯ |
Up right diagonal ellipsis |
⋰ |
-- |
⋰ |
⋰ |
Down right diagonal ellipsis |
⋱ |
-- |
⋱ |
⋱ |
Leftward arrow |
← |
← |
← |
← |
Rightward arrow (conditional) |
→ |
→ |
→ |
→ |
Downward arrow (bi-conditional) |
↓ |
↓ |
↓ |
↓ |
Upward arrow |
↑ |
↑ |
↑ |
↑ |
Bi-directional arrow |
↔ |
↔ |
↔ |
↔ |
Carriage return |
↵ |
↵ |
↵ |
↵ |
Leftward double arrow |
⇐ |
⇐ |
⇐ |
⇐ |
Upward double arrow |
⇑ |
⇑ |
⇑ |
⇑ |
Rightward double arrow |
⇒ |
⇒ |
⇒ |
⇒ |
Downward double arrow |
⇓ |
⇓ |
⇓ |
⇓ |
Bi-directional double arrow |
⇔ |
⇔ |
⇔ |
⇔ |