Unicode character entities:
Mathematical Operators

 Character Ranges
Unicode Index
ISO 8859-1 Index
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Character    Numbered Entity    Named Entity
Unicode
Position		 Description Entity
Number		 HTML
Result		 Standards/
Browser
Support		 Entity
Name		 HTML
Result		 Standards/
Browser
Support
2200 For all ∀∀  2 | 3 | 3.2 | 4 | IE | M | N  ∀∀  2 | 3 | 3.2 | 4 | IE | M | N 
2202 Partial differential ∂∂  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∂∂  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2203 There exists ∃∃  2 | 3 | 3.2 | 4 | IE | M | N  ∃∃  2 | 3 | 3.2 | 4 | IE | M | N 
2205 Empty set;
Null set;
Diameter		 ∅∅  2 | 3 | 3.2 | 4 | IE | M | N  ∅∅  2 | 3 | 3.2 | 4 | IE | M | N 
2207 Nabla;
Backward difference		 ∇∇  2 | 3 | 3.2 | 4 | IE | M | N  ∇∇  2 | 3 | 3.2 | 4 | IE | M | N 
2208 Element of ∈∈  2 | 3 | 3.2 | 4 | IE | M | N  ∈∈  2 | 3 | 3.2 | 4 | IE | M | N 
2209 Not an element of ∉∉  2 | 3 | 3.2 | 4 | IE | M | N  ∉∉  2 | 3 | 3.2 | 4 | IE | M | N 
220B Contains as member ∋∋  2 | 3 | 3.2 | 4 | IE | M | N  ∋∋  2 | 3 | 3.2 | 4 | IE | M | N 
220F N-ary product;
Product sign		 ∏∏  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∏∏  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2211 N-ary sumation ∑∑  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∑∑  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2212 Minus sign −−  2 | 3 | 3.2 | 4 | IE4B2 | M | N  −−  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2217 Asterisk operator ∗∗  2 | 3 | 3.2 | 4 | IE | M | N  ∗∗  2 | 3 | 3.2 | 4 | IE | M | N 
221A Square root;
Radical sign		 √√  2 | 3 | 3.2 | 4 | IE4B2 | M | N  √√  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
221D Proportional to ∝∝  2 | 3 | 3.2 | 4 | IE | M | N  ∝∝  2 | 3 | 3.2 | 4 | IE | M | N 
221E Infinity ∞∞  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∞∞  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2220 Angle ∠∠  2 | 3 | 3.2 | 4 | IE | M | N  ∠∠  2 | 3 | 3.2 | 4 | IE | M | N 
2227 Logical and;
Wedge		 ⊥⊥  2 | 3 | 3.2 | 4 | IE | M | N  ∧∧  2 | 3 | 3.2 | 4 | IE | M | N 
2228 Logical or;
Vee		 ⊦⊦  2 | 3 | 3.2 | 4 | IE | M | N  ∨∨  2 | 3 | 3.2 | 4 | IE | M | N 
2229 Intersection;
Cap		 ∩∩  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∩∩  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
222A Union;
Cup		 ∪∪  2 | 3 | 3.2 | 4 | IE | M | N  ∪∪  2 | 3 | 3.2 | 4 | IE | M | N 
222B Integral ∫∫  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ∫∫  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2234 Therefore ∴∴  2 | 3 | 3.2 | 4 | IE | M | N  ∴∴  2 | 3 | 3.2 | 4 | IE | M | N 
223C Tilde operator;
Varies with;
Similar to		 ∼∼  2 | 3 | 3.2 | 4 | IE | M | N  ∼∼  2 | 3 | 3.2 | 4 | IE | M | N 
2245 Approximately equal to ≅≅  2 | 3 | 3.2 | 4 | IE | M | N  ≅≅  2 | 3 | 3.2 | 4 | IE | M | N 
2248 Almost equal to;
Asymptotic to		 ≈≈  2 | 3 | 3.2 | 4 | IE4B2 | M | N  ≈≈  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2260 Not equal to ≠≠  2 | 3 | 3.2 | 4 | IE4B1 | M | N  ≠≠  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2261 Identical to ≡≡  2 | 3 | 3.2 | 4 | IE4B1 | M | N  ≡≡  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2264 Less-than or equal to ≤≤  2 | 3 | 3.2 | 4 | IE4B1 | M | N  ≤≤  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2265 Greater-than or equal to ≥≥  2 | 3 | 3.2 | 4 | IE4B1 | M | N  ≥≥  2 | 3 | 3.2 | 4 | IE4B2 | M | N 
2282 Subset of ⊂⊂  2 | 3 | 3.2 | 4 | IE | M | N  ⊂⊂  2 | 3 | 3.2 | 4 | IE | M | N 
2283 Superset of ⊃⊃  2 | 3 | 3.2 | 4 | IE | M | N  ⊃⊃  2 | 3 | 3.2 | 4 | IE | M | N 
2284 Not a subset of ⊄⊄  2 | 3 | 3.2 | 4 | IE | M | N  ⊄⊄  2 | 3 | 3.2 | 4 | IE | M | N 
2286 Subset of or equal to ⊆⊆  2 | 3 | 3.2 | 4 | IE | M | N  ⊆⊆  2 | 3 | 3.2 | 4 | IE | M | N 
2287 Superset of or equal to ⊇⊇  2 | 3 | 3.2 | 4 | IE | M | N  ⊇⊇  2 | 3 | 3.2 | 4 | IE | M | N 
2295 Circled plus;
Direct sum		 ⊕⊕  2 | 3 | 3.2 | 4 | IE | M | N  ⊕⊕  2 | 3 | 3.2 | 4 | IE | M | N 
2297 Circled times;
Vector product		 ⊗⊗  2 | 3 | 3.2 | 4 | IE | M | N  ⊗⊗  2 | 3 | 3.2 | 4 | IE | M | N 
22A5 Up tack;
Orthogonal to;
Perpendicular		 ⊥⊥  2 | 3 | 3.2 | 4 | IE | M | N  ⊥⊥  2 | 3 | 3.2 | 4 | IE | M | N 
22C5 Dot operator ⋅⋅  2 | 3 | 3.2 | 4 | IE | M | N  ⋅⋅  2 | 3 | 3.2 | 4 | IE | M | N 


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