<!-- iso-tech.ent produced by Norman Walsh for the XML version of DocBook --> <!-- Derived from the corresponding ISO 8879 standard entity set and the Unicode character mappings provided by Sebastian Rahtz --> <!-- NOTE: leading & escaped with & so these characters work with SGML parsers like Arbortext and nsgmls --> <!ENTITY aleph "&#x2135;"> <!-- ALEF SYMBOL --> <!ENTITY and "&#x2227;"> <!-- --> <!ENTITY ang90 "&#x221F;"> <!-- RIGHT ANGLE --> <!ENTITY angsph "&#x2222;"> <!-- --> <!ENTITY ap "&#x2248;"> <!-- --> <!ENTITY becaus "&#x2235;"> <!-- BECAUSE --> <!ENTITY bottom "&#x22A5;"> <!-- --> <!ENTITY cap "&#x2229;"> <!-- --> <!ENTITY cong "&#x2245;"> <!-- --> <!ENTITY conint "&#x222E;"> <!-- --> <!ENTITY cup "&#x222A;"> <!-- --> <!ENTITY equiv "&#x2261;"> <!-- --> <!ENTITY exist "&#x2203;"> <!-- --> <!ENTITY forall "&#x2200;"> <!-- --> <!ENTITY fnof "&#x0192;"> <!-- LATIN SMALL LETTER F WITH HOOK --> <!ENTITY ge "&#x2265;"> <!-- GREATER-THAN OR EQUAL TO --> <!ENTITY iff "&#xE365;"> <!-- --> <!ENTITY infin "&#x221E;"> <!-- --> <!ENTITY int "&#x222B;"> <!-- --> <!ENTITY isin "&#x220A;"> <!-- --> <!ENTITY lang "&#x3008;"> <!-- --> <!ENTITY lArr "&#x21D0;"> <!-- LEFTWARDS ARROW --> <!ENTITY le "&#x2264;"> <!-- --> <!ENTITY minus "&#x2212;"> <!-- MINUS SIGN --> <!ENTITY mnplus "&#x2213;"> <!-- --> <!ENTITY nabla "&#x2207;"> <!-- NABLA --> <!ENTITY ne "&#x2260;"> <!-- --> <!ENTITY ni "&#x220D;"> <!-- --> <!ENTITY or "&#x2228;"> <!-- --> <!ENTITY par "&#x2225;"> <!-- PARALLEL TO --> <!ENTITY part "&#x2202;"> <!-- --> <!ENTITY permil "&#x2030;"> <!-- PER MILLE SIGN --> <!ENTITY perp "&#x22A5;"> <!-- --> <!ENTITY prime "&#x2032;"> <!-- PRIME --> <!ENTITY Prime "&#x2033;"> <!-- DOUBLE PRIME --> <!ENTITY prop "&#x221D;"> <!-- --> <!ENTITY radic "&#x221A;"> <!-- --> <!ENTITY rang "&#x3009;"> <!-- --> <!ENTITY rArr "&#x21D2;"> <!-- RIGHTWARDS ARROW --> <!ENTITY sim "&#x223C;"> <!-- --> <!ENTITY sime "&#x2243;"> <!-- --> <!ENTITY square "&#x25A1;"> <!-- WHITE SQUARE --> <!ENTITY sub "&#x2282;"> <!-- --> <!ENTITY sube "&#x2286;"> <!-- --> <!ENTITY sup "&#x2283;"> <!-- --> <!ENTITY supe "&#x2287;"> <!-- --> <!ENTITY there4 "&#x2234;"> <!-- --> <!ENTITY Verbar "&#x2016;"> <!-- DOUBLE VERTICAL LINE --> <!ENTITY angst "&#x212B;"> <!-- ANGSTROM SIGN --> <!ENTITY bernou "&#x212C;"> <!-- SCRIPT CAPITAL B --> <!ENTITY compfn "&#x2218;"> <!-- RING OPERATOR --> <!ENTITY Dot "&#x0308;"> <!-- --> <!ENTITY DotDot "&#x20DC;"> <!-- COMBINING FOUR DOTS ABOVE --> <!ENTITY hamilt "&#x210B;"> <!-- SCRIPT CAPITAL H --> <!ENTITY lagran "&#x2112;"> <!-- SCRIPT CAPITAL L --> <!ENTITY lowast "&#x2217;"> <!-- ASTERISK OPERATOR --> <!ENTITY notin "&#x2209;"> <!-- --> <!ENTITY order "&#x2134;"> <!-- SCRIPT SMALL O --> <!ENTITY phmmat "&#x2133;"> <!-- SCRIPT CAPITAL M --> <!ENTITY tdot "&#x20DB;"> <!-- COMBINING THREE DOTS ABOVE --> <!ENTITY tprime "&#x2034;"> <!-- TRIPLE PRIME --> <!ENTITY wedgeq "&#x2259;"> <!-- ESTIMATES -->