<    (less-than sign)=&lt;
>    (greater-than sign)=&gt;
¬    (not sign)=&not;
±    (plus-minus sign)=&plusmn;
×    (multiplication sign)=&times;
÷    (division sign)=&divide;
−    (minus sign)=&minus;
°    (degree symbol)=&deg;
ª    (feminine ordinal indicator)=&ordf;
¹    (superscript one)=&sup1;
²    (superscript two)=&sup2;
³    (superscript three)=&sup3;
µ    (micro sign)=&micro;
¼    (vulgar fraction one quarter)=&frac14;
½    (vulgar fraction one half)=&frac12;
¾    (vulgar fraction three quarters)=&frac34;
‰    (per mille sign)=&permil;
⁄    (fraction slash)=&frasl;
∀    (for all)=&forall;
∂    (partial differential)=&part;
∃    (there exists)=&exist;
∅    (empty set)=&empty;
∇    (nabla)=&nabla;
∈    (element of)=&isin;
∉    (not an element of)=&notin;
∋    (contains as member)=&ni;
∏    (n-ary product)=&prod;
∑    (n-ary summation)=&sum;
∗    (asterisk operator)=&lowast;
√    (square root)=&radic;
∝    (proportional to)=&prop;
∞    (infinity)=&infin;
∠    (angle)=&ang;
∧    (logical and)=&and;
∨    (logical or)=&or;
∩    (intersection)=&cap;
∪    (union)=&cup;
∫    (integral)=&int;
∴    (therefore sign)=&there4;
∼    (tilde operator)=&sim;
≅    (congruent to)=&cong;
≈    (almost equal to)=&asymp;
≠    (not equal to)=&ne;
≡    (identical to)=&equiv;
≤    (less-than or equal to)=&le;
≥    (greater-than or equal to)=&ge;
⊂    (subset of)=&sub;
⊃    (superset of)=&sup;
⊄    (not a subset of)=&nsub;
⊆    (subset of or equal to)=&sube;
⊇    (superset of or equal to)=&supe;
⊕    (circled plus)=&oplus;
⊗    (circled times)=&otimes;
⊥    (up tack)=&perp;
⋅    (dot operator)=&sdot;