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NOTA BENE: Il Bloggatore ha rilevato dei problemi di collegamento con il blog indicato come fonte originale dell'articolo. Pertanto, al fine di consentire agli utenti di leggere questo articolo, se possibile, viene reso temporaneamente disponibile il post completo.

Se anche voi non vi ricordate mai i codici o i nomi dei caratteri complessi, quando dovete utilizzare tali caratteri in una pagina HTML, ecco a voi la lista completa fornita dal W3C.

Io solitamente utilizzo questa modalità di utilizzo

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Esempio

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Name Character Unicode code point Standard DTD Old ISO subset Description quot “ U+0022 (34) HTML 2.0 HTMLspecial ISOnum quotation mark (= APL quote) amp & U+0026 (38) HTML 2.0 HTMLspecial ISOnum ampersand apos ‘ U+0027 (39) XHTML 1.0 HTMLspecial ISOnum apostrophe (= apostrophe-quote); see below lt < U+003C (60) HTML 2.0 HTMLspecial ISOnum less-than sign gt > U+003E (62) HTML 2.0 HTMLspecial ISOnum greater-than sign nbsp U+00A0 (160) HTML 3.2 HTMLlat1 ISOnum no-break space (= non-breaking space)[4] iexcl ¡ U+00A1 (161) HTML 3.2 HTMLlat1 ISOnum inverted exclamation mark cent ¢ U+00A2 (162) HTML 3.2 HTMLlat1 ISOnum cent sign pound £ U+00A3 (163) HTML 3.2 HTMLlat1 ISOnum pound sign curren ¤ U+00A4 (164) HTML 3.2 HTMLlat1 ISOnum currency sign yen ¥ U+00A5 (165) HTML 3.2 HTMLlat1 ISOnum yen sign (= yuan sign) brvbar ¦ U+00A6 (166) HTML 3.2 HTMLlat1 ISOnum broken bar (= broken vertical bar) sect § U+00A7 (167) HTML 3.2 HTMLlat1 ISOnum section sign uml ¨ U+00A8 (168) HTML 3.2 HTMLlat1 ISOdia diaeresis (= spacing diaeresis); see German umlaut copy © U+00A9 (169) HTML 3.2 HTMLlat1 ISOnum copyright sign ordf ª U+00AA (170) HTML 3.2 HTMLlat1 ISOnum feminine ordinal indicator laquo « U+00AB (171) HTML 3.2 HTMLlat1 ISOnum left-pointing double angle quotation mark (= left pointing guillemet) not ¬ U+00AC (172) HTML 3.2 HTMLlat1 ISOnum not sign shy U+00AD (173) HTML 3.2 HTMLlat1 ISOnum soft hyphen (= discretionary hyphen) reg ® U+00AE (174) HTML 3.2 HTMLlat1 ISOnum registered sign ( = registered trade mark sign) macr ¯ U+00AF (175) HTML 3.2 HTMLlat1 ISOdia macron (= spacing macron = overline = APL overbar) deg ° U+00B0 (176) HTML 3.2 HTMLlat1 ISOnum degree sign plusmn ± U+00B1 (177) HTML 3.2 HTMLlat1 ISOnum plus-minus sign (= plus-or-minus sign) sup2 ² U+00B2 (178) HTML 3.2 HTMLlat1 ISOnum superscript two (= superscript digit two = squared) sup3 ³ U+00B3 (179) HTML 3.2 HTMLlat1 ISOnum superscript three (= superscript digit three = cubed) acute ´ U+00B4 (180) HTML 3.2 HTMLlat1 ISOdia acute accent (= spacing acute) micro µ U+00B5 (181) HTML 3.2 HTMLlat1 ISOnum micro sign para ¶ U+00B6 (182) HTML 3.2 HTMLlat1 ISOnum pilcrow sign ( = paragraph sign) middot · U+00B7 (183) HTML 3.2 HTMLlat1 ISOnum middle dot (= Georgian comma = Greek middle dot) cedil ¸ U+00B8 (184) HTML 3.2 HTMLlat1 ISOdia cedilla (= spacing cedilla) sup1 ¹ U+00B9 (185) HTML 3.2 HTMLlat1 ISOnum superscript one (= superscript digit one) ordm º U+00BA (186) HTML 3.2 HTMLlat1 ISOnum masculine ordinal indicator raquo » U+00BB (187) HTML 3.2 HTMLlat1 ISOnum right-pointing double angle quotation mark (= right pointing guillemet) frac14 ¼ U+00BC (188) HTML 3.2 HTMLlat1 ISOnum vulgar fraction one quarter (= fraction one quarter) frac12 ½ U+00BD (189) HTML 3.2 HTMLlat1 ISOnum vulgar fraction one half (= fraction one half) frac34 ¾ U+00BE (190) HTML 3.2 HTMLlat1 ISOnum vulgar fraction three quarters (= fraction three quarters) iquest ¿ U+00BF (191) HTML 3.2 HTMLlat1 ISOnum inverted question mark (= turned question mark) Agrave À U+00C0 (192) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with grave (= Latin capital letter A grave) Aacute Á U+00C1 (193) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with acute Acirc  U+00C2 (194) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with circumflex Atilde à U+00C3 (195) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with tilde Auml Ä U+00C4 (196) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with diaeresis Aring Å U+00C5 (197) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter A with ring above (= Latin capital letter A ring) AElig Æ U+00C6 (198) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter AE (= Latin capital ligature AE) Ccedil Ç U+00C7 (199) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter C with cedilla Egrave È U+00C8 (200) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter E with grave Eacute É U+00C9 (201) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter E with acute Ecirc Ê U+00CA (202) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter E with circumflex Euml Ë U+00CB (203) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter E with diaeresis Igrave Ì U+00CC (204) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter I with grave Iacute Í U+00CD (205) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter I with acute Icirc Î U+00CE (206) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter I with circumflex Iuml Ï U+00CF (207) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter I with diaeresis ETH Ð U+00D0 (208) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter ETH Ntilde Ñ U+00D1 (209) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter N with tilde Ograve Ò U+00D2 (210) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with grave Oacute Ó U+00D3 (211) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with acute Ocirc Ô U+00D4 (212) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with circumflex Otilde Õ U+00D5 (213) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with tilde Ouml Ö U+00D6 (214) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with diaeresis times × U+00D7 (215) HTML 3.2 HTMLlat1 ISOnum multiplication sign Oslash Ø U+00D8 (216) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter O with stroke (= Latin capital letter O slash) Ugrave Ù U+00D9 (217) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter U with grave Uacute Ú U+00DA (218) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter U with acute Ucirc Û U+00DB (219) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter U with circumflex Uuml Ü U+00DC (220) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter U with diaeresis Yacute Ý U+00DD (221) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter Y with acute THORN Þ U+00DE (222) HTML 2.0 HTMLlat1 ISOlat1 Latin capital letter THORN szlig ß U+00DF (223) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter sharp s (= ess-zed); see German Eszett agrave à U+00E0 (224) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with grave aacute á U+00E1 (225) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with acute acirc â U+00E2 (226) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with circumflex atilde ã U+00E3 (227) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with tilde auml ä U+00E4 (228) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with diaeresis aring å U+00E5 (229) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter a with ring above aelig æ U+00E6 (230) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter ae (= Latin small ligature ae) ccedil ç U+00E7 (231) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter c with cedilla egrave è U+00E8 (232) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter e with grave eacute é U+00E9 (233) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter e with acute ecirc ê U+00EA (234) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter e with circumflex euml ë U+00EB (235) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter e with diaeresis igrave ì U+00EC (236) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter i with grave iacute í U+00ED (237) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter i with acute icirc î U+00EE (238) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter i with circumflex iuml ï U+00EF (239) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter i with diaeresis eth ð U+00F0 (240) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter eth ntilde ñ U+00F1 (241) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter n with tilde ograve ò U+00F2 (242) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with grave oacute ó U+00F3 (243) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with acute ocirc ô U+00F4 (244) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with circumflex otilde õ U+00F5 (245) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with tilde ouml ö U+00F6 (246) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with diaeresis divide ÷ U+00F7 (247) HTML 3.2 HTMLlat1 ISOnum division sign oslash ø U+00F8 (248) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter o with stroke (= Latin small letter o slash) ugrave ù U+00F9 (249) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter u with grave uacute ú U+00FA (250) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter u with acute ucirc û U+00FB (251) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter u with circumflex uuml ü U+00FC (252) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter u with diaeresis yacute ý U+00FD (253) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter y with acute thorn þ U+00FE (254) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter thorn yuml ÿ U+00FF (255) HTML 2.0 HTMLlat1 ISOlat1 Latin small letter y with diaeresis OElig Œ U+0152 (338) HTML 4.0 HTMLspecial ISOlat2 Latin capital ligature oe[5] oelig œ U+0153 (339) HTML 4.0 HTMLspecial ISOlat2 Latin small ligature oe[6] Scaron Š U+0160 (352) HTML 4.0 HTMLspecial ISOlat2 Latin capital letter s with caron scaron š U+0161 (353) HTML 4.0 HTMLspecial ISOlat2 Latin small letter s with caron Yuml Ÿ U+0178 (376) HTML 4.0 HTMLspecial ISOlat2 Latin capital letter y with diaeresis fnof ƒ U+0192 (402) HTML 4.0 HTMLsymbol ISOtech Latin small letter f with hook (= function = florin) circ ˆ U+02C6 (710) HTML 4.0 HTMLspecial ISOpub modifier letter circumflex accent tilde ˜ U+02DC (732) HTML 4.0 HTMLspecial ISOdia small tilde Alpha Α U+0391 (913) HTML 4.0 HTMLsymbol Greek capital letter Alpha Beta Β U+0392 (914) HTML 4.0 HTMLsymbol Greek capital letter Beta Gamma Γ U+0393 (915) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Gamma Delta Δ U+0394 (916) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Delta Epsilon Ε U+0395 (917) HTML 4.0 HTMLsymbol Greek capital letter Epsilon Zeta Ζ U+0396 (918) HTML 4.0 HTMLsymbol Greek capital letter Zeta Eta Η U+0397 (919) HTML 4.0 HTMLsymbol Greek capital letter Eta Theta Θ U+0398 (920) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Theta Iota Ι U+0399 (921) HTML 4.0 HTMLsymbol Greek capital letter Iota Kappa Κ U+039A (922) HTML 4.0 HTMLsymbol Greek capital letter Kappa Lambda Λ U+039B (923) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Lambda Mu Μ U+039C (924) HTML 4.0 HTMLsymbol Greek capital letter Mu Nu Ν U+039D (925) HTML 4.0 HTMLsymbol Greek capital letter Nu Xi Ξ U+039E (926) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Xi Omicron Ο U+039F (927) HTML 4.0 HTMLsymbol Greek capital letter Omicron Pi Π U+03A0 (928) HTML 4.0 HTMLsymbol Greek capital letter Pi Rho Ρ U+03A1 (929) HTML 4.0 HTMLsymbol Greek capital letter Rho Sigma Σ U+03A3 (931) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Sigma Tau Τ U+03A4 (932) HTML 4.0 HTMLsymbol Greek capital letter Tau Upsilon Υ U+03A5 (933) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Upsilon Phi Φ U+03A6 (934) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Phi Chi Χ U+03A7 (935) HTML 4.0 HTMLsymbol Greek capital letter Chi Psi Ψ U+03A8 (936) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Psi Omega Ω U+03A9 (937) HTML 4.0 HTMLsymbol ISOgrk3 Greek capital letter Omega alpha α U+03B1 (945) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter alpha beta β U+03B2 (946) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter beta gamma γ U+03B3 (947) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter gamma delta δ U+03B4 (948) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter delta epsilon ε U+03B5 (949) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter epsilon zeta ζ U+03B6 (950) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter zeta eta η U+03B7 (951) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter eta theta θ U+03B8 (952) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter theta iota ι U+03B9 (953) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter iota kappa κ U+03BA (954) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter kappa lambda λ U+03BB (955) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter lambda mu μ U+03BC (956) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter mu nu ν U+03BD (957) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter nu xi ξ U+03BE (958) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter xi omicron ο U+03BF (959) HTML 4.0 HTMLsymbol NEW Greek small letter omicron pi π U+03C0 (960) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter pi rho ρ U+03C1 (961) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter rho sigmaf ς U+03C2 (962) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter final sigma sigma σ U+03C3 (963) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter sigma tau τ U+03C4 (964) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter tau upsilon υ U+03C5 (965) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter upsilon phi φ U+03C6 (966) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter phi chi χ U+03C7 (967) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter chi psi ψ U+03C8 (968) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter psi omega ω U+03C9 (969) HTML 4.0 HTMLsymbol ISOgrk3 Greek small letter omega thetasym ϑ U+03D1 (977) HTML 4.0 HTMLsymbol NEW Greek theta symbol upsih ϒ U+03D2 (978) HTML 4.0 HTMLsymbol NEW Greek Upsilon with hook symbol piv ϖ U+03D6 (982) HTML 4.0 HTMLsymbol ISOgrk3 Greek pi symbol ensp U+2002 (8194) HTML 4.0 HTMLspecial ISOpub en space[7] emsp U+2003 (8195) HTML 4.0 HTMLspecial ISOpub em space[8] thinsp U+2009 (8201) HTML 4.0 HTMLspecial ISOpub thin space[9] zwnj U+200C (8204) HTML 4.0 HTMLspecial NEW RFC 2070 zero-width non-joiner zwj U+200D (8205) HTML 4.0 HTMLspecial NEW RFC 2070 zero-width joiner lrm U+200E (8206) HTML 4.0 HTMLspecial NEW RFC 2070 left-to-right mark rlm U+200F (8207) HTML 4.0 HTMLspecial NEW RFC 2070 right-to-left mark ndash – U+2013 (8211) HTML 4.0 HTMLspecial ISOpub en dash mdash — U+2014 (8212) HTML 4.0 HTMLspecial ISOpub em dash lsquo ‘ U+2018 (8216) HTML 4.0 HTMLspecial ISOnum left single quotation mark rsquo ’ U+2019 (8217) HTML 4.0 HTMLspecial ISOnum right single quotation mark sbquo ‚ U+201A (8218) HTML 4.0 HTMLspecial NEW single low-9 quotation mark ldquo “ U+201C (8220) HTML 4.0 HTMLspecial ISOnum left double quotation mark rdquo ” U+201D (8221) HTML 4.0 HTMLspecial ISOnum right double quotation mark bdquo „ U+201E (8222) HTML 4.0 HTMLspecial NEW double low-9 quotation mark dagger † U+2020 (8224) HTML 4.0 HTMLspecial ISOpub dagger Dagger ‡ U+2021 (8225) HTML 4.0 HTMLspecial ISOpub double dagger bull • U+2022 (8226) HTML 4.0 HTMLspecial ISOpub bullet (= black small circle)[10] hellip … U+2026 (8230) HTML 4.0 HTMLsymbol ISOpub horizontal ellipsis (= three dot leader) permil ‰ U+2030 (8240) HTML 4.0 HTMLspecial ISOtech per mille sign prime ′ U+2032 (8242) HTML 4.0 HTMLsymbol ISOtech prime (= minutes = feet) Prime ″ U+2033 (8243) HTML 4.0 HTMLsymbol ISOtech double prime (= seconds = inches) lsaquo ‹ U+2039 (8249) HTML 4.0 HTMLspecial ISO proposed single left-pointing angle quotation mark[11] rsaquo › U+203A (8250) HTML 4.0 HTMLspecial ISO proposed single right-pointing angle quotation mark[12] oline ‾ U+203E (8254) HTML 4.0 HTMLsymbol NEW overline (= spacing overscore) frasl ⁄ U+2044 (8260) HTML 4.0 HTMLsymbol NEW fraction slash (= solidus) euro € U+20AC (8364) HTML 4.0 HTMLspecial NEW euro sign image ℑ U+2111 (8465) HTML 4.0 HTMLsymbol ISOamso black-letter capital I (= imaginary part) weierp ℘ U+2118 (8472) HTML 4.0 HTMLsymbol ISOamso script capital P (= power set = Weierstrass p) real ℜ U+211C (8476) HTML 4.0 HTMLsymbol ISOamso black-letter capital R (= real part symbol) trade ™ U+2122 (8482) HTML 4.0 HTMLsymbol ISOnum trademark sign alefsym ℵ U+2135 (8501) HTML 4.0 HTMLsymbol NEW alef symbol (= first transfinite cardinal)[13] larr ← U+2190 (8592) HTML 4.0 HTMLsymbol ISOnum leftwards arrow uarr ↑ U+2191 (8593) HTML 4.0 HTMLsymbol ISOnum upwards arrow rarr → U+2192 (8594) HTML 4.0 HTMLsymbol ISOnum rightwards arrow darr ↓ U+2193 (8595) HTML 4.0 HTMLsymbol ISOnum downwards arrow harr ↔ U+2194 (8596) HTML 4.0 HTMLsymbol ISOamsa left right arrow crarr ↵ U+21B5 (8629) HTML 4.0 HTMLsymbol NEW downwards arrow with corner leftwards (= carriage return) lArr ⇐ U+21D0 (8656) HTML 4.0 HTMLsymbol ISOtech leftwards double arrow[14] uArr ⇑ U+21D1 (8657) HTML 4.0 HTMLsymbol ISOamsa upwards double arrow rArr ⇒ U+21D2 (8658) HTML 4.0 HTMLsymbol ISOnum rightwards double arrow[15] dArr ⇓ U+21D3 (8659) HTML 4.0 HTMLsymbol ISOamsa downwards double arrow hArr ⇔ U+21D4 (8660) HTML 4.0 HTMLsymbol ISOamsa left right double arrow forall ∀ U+2200 (8704) HTML 4.0 HTMLsymbol ISOtech for all part ∂ U+2202 (8706) HTML 4.0 HTMLsymbol ISOtech partial differential exist ∃ U+2203 (8707) HTML 4.0 HTMLsymbol ISOtech there exists empty ∅ U+2205 (8709) HTML 4.0 HTMLsymbol ISOamso empty set (= null set = diameter) nabla ∇ U+2207 (8711) HTML 4.0 HTMLsymbol ISOtech nabla (= backward difference) isin ∈ U+2208 (8712) HTML 4.0 HTMLsymbol ISOtech element of notin ∉ U+2209 (8713) HTML 4.0 HTMLsymbol ISOtech not an element of ni ∋ U+220B (8715) HTML 4.0 HTMLsymbol ISOtech contains as member prod ∏ U+220F (8719) HTML 4.0 HTMLsymbol ISOamsb n-ary product (= product sign)[16] sum ∑ U+2211 (8721) HTML 4.0 HTMLsymbol ISOasmb n-ary summation[17] minus − U+2212 (8722) HTML 4.0 HTMLsymbol ISOtech minus sign lowast ∗ U+2217 (8727) HTML 4.0 HTMLsymbol ISOtech asterisk operator radic √ U+221A (8730) HTML 4.0 HTMLsymbol ISOtech square root (= radical sign) prop ∝ U+221D (8733) HTML 4.0 HTMLsymbol ISOtech proportional to infin ∞ U+221E (8734) HTML 4.0 HTMLsymbol ISOtech infinity ang ∠ U+2220 (8736) HTML 4.0 HTMLsymbol ISOamso angle and ∧ U+2227 (8743) HTML 4.0 HTMLsymbol ISOtech logical and (= wedge) or ∨ U+2228 (8744) HTML 4.0 HTMLsymbol ISOtech logical or (= vee) cap ∩ U+2229 (8745) HTML 4.0 HTMLsymbol ISOtech intersection (= cap) cup ∪ U+222A (8746) HTML 4.0 HTMLsymbol ISOtech union (= cup) int ∫ U+222B (8747) HTML 4.0 HTMLsymbol ISOtech integral there4 ∴ U+2234 (8756) HTML 4.0 HTMLsymbol ISOtech therefore sim ∼ U+223C (8764) HTML 4.0 HTMLsymbol ISOtech tilde operator (= varies with = similar to)[18] cong ≅ U+2245 (8773) HTML 4.0 HTMLsymbol ISOtech congruent to asymp ≈ U+2248 (8776) HTML 4.0 HTMLsymbol ISOamsr almost equal to (= asymptotic to) ne ≠ U+2260 (8800) HTML 4.0 HTMLsymbol ISOtech not equal to equiv ≡ U+2261 (8801) HTML 4.0 HTMLsymbol ISOtech identical to; sometimes used for ‘equivalent to’ le ≤ U+2264 (8804) HTML 4.0 HTMLsymbol ISOtech less-than or equal to ge ≥ U+2265 (8805) HTML 4.0 HTMLsymbol ISOtech greater-than or equal to sub ⊂ U+2282 (8834) HTML 4.0 HTMLsymbol ISOtech subset of sup ⊃ U+2283 (8835) HTML 4.0 HTMLsymbol ISOtech superset of[19] nsub ⊄ U+2284 (8836) HTML 4.0 HTMLsymbol ISOamsn not a subset of sube ⊆ U+2286 (8838) HTML 4.0 HTMLsymbol ISOtech subset of or equal to supe ⊇ U+2287 (8839) HTML 4.0 HTMLsymbol ISOtech superset of or equal to oplus ⊕ U+2295 (8853) HTML 4.0 HTMLsymbol ISOamsb circled plus (= direct sum) otimes ⊗ U+2297 (8855) HTML 4.0 HTMLsymbol ISOamsb circled times (= vector product) perp ⊥ U+22A5 (8869) HTML 4.0 HTMLsymbol ISOtech up tack (= orthogonal to = perpendicular) sdot ⋅ U+22C5 (8901) HTML 4.0 HTMLsymbol ISOamsb dot operator[20] lceil ⌈ U+2308 (8968) HTML 4.0 HTMLsymbol ISOamsc left ceiling (= APL upstile) rceil ⌉ U+2309 (8969) HTML 4.0 HTMLsymbol ISOamsc right ceiling lfloor ⌊ U+230A (8970) HTML 4.0 HTMLsymbol ISOamsc left floor (= APL downstile) rfloor ⌋ U+230B (8971) HTML 4.0 HTMLsymbol ISOamsc right floor lang 〈 U+2329 (9001) HTML 4.0 HTMLsymbol ISOtech left-pointing angle bracket (= bra)[21] rang 〉 U+232A (9002) HTML 4.0 HTMLsymbol ISOtech right-pointing angle bracket (= ket)[22] loz ◊ U+25CA (9674) HTML 4.0 HTMLsymbol ISOpub lozenge spades ♠ U+2660 (9824) HTML 4.0 HTMLsymbol ISOpub black spade suit[23] clubs ♣ U+2663 (9827) HTML 4.0 HTMLsymbol ISOpub black club suit (= shamrock)[24] hearts ♥ U+2665 (9829) HTML 4.0 HTMLsymbol ISOpub black heart suit (= valentine)[25] diams ♦ U+2666 (9830) HTML 4.0 HTMLsymbol ISOpub black diamond suit[26]

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