# Mathematical Symbols

The following table lists a selection of codes that can be used to display various mathematical symbols in your web page but unfortunately not all of the symbols are supported in all browsers. All of these symbols work in Netscape 6+, Opera 6+, Mozilla, and Firefox. Those marked [*] do not display correctly in Internet Explorer 6. Those with four digit numbers in the codes do not display correctly in version 5- browsers. Where the symbol does not display correctly it will appear as a box or question mark depending on the particular browser.

CodeSymbol
&#172¬ (not)
&#177± (plus or minus)
&#178² (squared)
&#179³ (cubed)
&#189½ (one half)
&#190¾ (three quarters)
&#215× (multiply)
&#8704∀ (for all) [*]
&#8706∂ (partial differential)
&#8707∃ (there exists) [*]
&#8709∅ (empty set) [*]
&#8712∈ (element of) [*]
&#8713∉ (not element of) [*]
&#8715∋ (contains as member) [*]
&#8721∑ (summation)
&#8722− (minus)
&#8730√ (square root)
&#8733∝ (proportional to) [*]
&#8734∞ (infinity)
&#8743∧ (logical and) [*]
&#8744∨ (logical or) [*]
&#8745∩ (intersection)
&#8746∪ (union) [*]
&#8747∫ (integral)
&#8756∴ (therefore) [*]
&#8773≅ (approximately equal) [*]
&#8776≈ (almost equal)
&#8800≠ (not equal)
&#8801≡ (identical)
&#8804≤ (less than or equal)
&#8805≥ (greater than or equal)
&#8834⊂ (subset of) [*]
&#8835⊃ (superset of) [*]
&#8836⊄ (not a subset of) [*]
&#8838⊆ (subset of or equal to) [*]
&#8839⊇ (superset of or equal to) [*]