<!-- iso-tech.ent (initially distributed with DocBook XML DTD V4.1.1beta1) --> <!-- Derived from the corresponding ISO 8879 standard entity set and the Unicode character mappings provided by Sebastian Rahtz. With additional derivations from ftp://ftp.unicode.org/Public/MAPPINGS/VENDORS/MISC/SGML.TXT --> <!ENTITY aleph "ℵ"> <!-- ALEF SYMBOL --> <!ENTITY and "∧"> <!-- --> <!ENTITY ang90 "∟"> <!-- RIGHT ANGLE --> <!ENTITY angsph "∢"> <!-- --> <!ENTITY ap "≈"> <!-- --> <!ENTITY becaus "∵"> <!-- BECAUSE --> <!ENTITY bottom "⊥"> <!-- --> <!ENTITY cap "∩"> <!-- --> <!ENTITY cong "≅"> <!-- --> <!ENTITY conint "∮"> <!-- --> <!ENTITY cup "∪"> <!-- --> <!ENTITY equiv "≡"> <!-- --> <!ENTITY exist "∃"> <!-- --> <!ENTITY forall "∀"> <!-- --> <!ENTITY fnof "ƒ"> <!-- LATIN SMALL LETTER F WITH HOOK --> <!ENTITY ge "≥"> <!-- GREATER-THAN OR EQUAL TO --> <!ENTITY iff "⇔"> <!-- LEFT RIGHT DOUBLE ARROW --> <!ENTITY infin "∞"> <!-- --> <!ENTITY int "∫"> <!-- --> <!ENTITY isin "∊"> <!-- --> <!ENTITY lang "〈"> <!-- --> <!ENTITY lArr "⇐"> <!-- LEFTWARDS ARROW --> <!ENTITY le "≤"> <!-- --> <!ENTITY minus "−"> <!-- MINUS SIGN --> <!ENTITY mnplus "∓"> <!-- --> <!ENTITY nabla "∇"> <!-- NABLA --> <!ENTITY ne "≠"> <!-- --> <!ENTITY ni "∍"> <!-- --> <!ENTITY or "∨"> <!-- --> <!ENTITY par "∥"> <!-- PARALLEL TO --> <!ENTITY part "∂"> <!-- --> <!ENTITY permil "‰"> <!-- PER MILLE SIGN --> <!ENTITY perp "⊥"> <!-- --> <!ENTITY prime "′"> <!-- PRIME --> <!ENTITY Prime "″"> <!-- DOUBLE PRIME --> <!ENTITY prop "∝"> <!-- --> <!ENTITY radic "√"> <!-- --> <!ENTITY rang "〉"> <!-- --> <!ENTITY rArr "⇒"> <!-- RIGHTWARDS ARROW --> <!ENTITY sim "∼"> <!-- --> <!ENTITY sime "≃"> <!-- --> <!ENTITY square "□"> <!-- WHITE SQUARE --> <!ENTITY sub "⊂"> <!-- --> <!ENTITY sube "⊆"> <!-- --> <!ENTITY sup "⊃"> <!-- --> <!ENTITY supe "⊇"> <!-- --> <!ENTITY there4 "∴"> <!-- --> <!ENTITY Verbar "‖"> <!-- DOUBLE VERTICAL LINE --> <!ENTITY angst "Å"> <!-- ANGSTROM SIGN --> <!ENTITY bernou "ℬ"> <!-- SCRIPT CAPITAL B --> <!ENTITY compfn "∘"> <!-- RING OPERATOR --> <!ENTITY Dot "¨"> <!-- --> <!ENTITY DotDot "⃜"> <!-- COMBINING FOUR DOTS ABOVE --> <!ENTITY hamilt "ℋ"> <!-- SCRIPT CAPITAL H --> <!ENTITY lagran "ℒ"> <!-- SCRIPT CAPITAL L --> <!ENTITY lowast "∗"> <!-- ASTERISK OPERATOR --> <!ENTITY notin "∉"> <!-- --> <!ENTITY order "ℴ"> <!-- SCRIPT SMALL O --> <!ENTITY phmmat "ℳ"> <!-- SCRIPT CAPITAL M --> <!ENTITY tdot "⃛"> <!-- COMBINING THREE DOTS ABOVE --> <!ENTITY tprime "‴"> <!-- TRIPLE PRIME --> <!ENTITY wedgeq "≙"> <!-- ESTIMATES -->