∀ ∀ ∀ for all u+2200 ISOtech alert(“\u2200”);

∂ ∂ ∂ partial differential u+2202 ISOtech alert(“\u2202”);

∃ ∃ ∃ there exists u+2203 ISOtech alert(“\u2203”);

∅ ∅ ∅ empty set, a.k.a. null set, a.k.a. diameter u+2205 ISOamso alert(“\u2205”);

∇ ∇ ∇ nabla, a.k.a. backward difference u+2207 ISOtech alert(“\u2207”);

∈ ∈ ∈ element of u+2208 ISOtech alert(“\u2208”);

∉ ∉ ∉ not an element of u+2209 ISOtech alert(“\u2209”);

&ni ; ∋ ∋ contains as member u+220B ISOtech alert(“\u220b”);

∏ ∏ ∏ n-ary product, a.k.a. product sign

prod is NOT the same character as u+03A0 ‘greek capital letter pi’ though the same

glyph might be used for both u+220F ISOamsb alert(“\u03a0”);

&sum ; ∑ ∑ n-ary sumation

sum is NOT the same character as u+03A3 ‘greek capital letter sigma’ though the same

glyph might be used for both u+2211 ISOamsb alert(“\u03a3”);

− − − minus sign u+2212 ISOtech alert(“\u2212”);

∗ ∗ ∗ asterisk operator u+2217 ISOtech alert(“\u2217”);

√ √ √ square root, a.k.a. radical sign u+221A ISOtech alert(“\u221a”);

∝ ∝ ∝ proportional to u+221D ISOtech alert(“\u221d”);

∞ ∞ ∞ infinity u+221E ISOtech alert(“\u221e”);

&ang ; ∠ ∠ angle u+2220 ISOamso alert(“\u2220”);

&and ; ⊥ ⊥ logical and, a.k.a. wedge u+2227 ISOtech alert(“\u2227”);

&or ; ⊦ ⊦ logical or, a.k.a. vee u+2228 ISOtech alert(“\u2228”);

&cap ; ∩ ∩ intersection, a.k.a. cap u+2229 ISOtech alert(“\u2229”);

&cup ; ∪ ∪ union, a.k.a. cup u+222A ISOtech alert(“\u222a”);

&int ; ∫ ∫ integral u+222B ISOtech alert(“\u222b”);

∴ ∴ ∴ therefore u+2234 ISOtech alert(“\u2234”);

&sim ; ∼ ∼ tilde operator, a.k.a. varies with,

similar to tilde operator, but is NOT the same character as the tilde u+007E,

although the same glyph might be used to represent both u+223C ISOtech alert(“\u223c”);

≅ ≅ ≅ approximately equal to u+2245 ISOtech alert(“\u2245”);

≈ ≈ ≈ almost equal to, a.k.a. asymptotic to u+2248 ISOamsr alert(“\u2248”);

&ne ; ≠ ≠ not equal to u+2260 ISOtech alert(“\u2260”);

≡ ≡ ≡ identical to u+2261 ISOtech alert(“\u2261”);

&le ; ≤ ≤ less-than or equal to u+2264 ISOtech alert(“\u2264”);

&ge ; ≥ ≥ greater-than or equal to u+2265 ISOtech alert(“\u2265”);

&sub ; ⊂ ⊂ subset of u+2282 ISOtech alert(“\u2282”);

&sup ; ⊃ ⊃ superset of

note that nsup, ‘not a superset of u+2283′ is not covered by the Symbol font

encoding and is not included. u+2283 ISOtech alert(“\u2283”);

⊄ ⊄ ⊄ not a subset of u+2284 ISOamsn alert(“\u2284”);

⊆ ⊆ ⊆ subset of or equal to u+2286 ISOtech alert(“\u2286”);

⊇ ⊇ ⊇ superset of or equal to u+2287 ISOtech alert(“\u2287”);

⊕ ⊕ ⊕ circled plus, a.k.a. direct sum u+2295 ISOamsb alert(“\u2295”);

⊗ ⊗ ⊗ circled times, a.k.a. vector product u+2297 ISOamsb alert(“\u2297”);

⊥ ⊥ ⊥ up tack, a.k.a. orthogonal to, a.k.a. perpendicular u+22A5 ISOtech alert(“\u22a5”);