<!ENTITY aleph "ℵ">
<!ENTITY and "∧">
<!ENTITY ang90 "∟">
<!ENTITY angsph "∢">
<!ENTITY ap "≈">
<!ENTITY becaus "∵">
<!ENTITY bottom "⊥">
<!ENTITY cap "∩">
<!ENTITY cong "≅">
<!ENTITY conint "∮">
<!ENTITY cup "∪">
<!ENTITY equiv "≡">
<!ENTITY exist "∃">
<!ENTITY forall "∀">
<!ENTITY fnof "ƒ">
<!ENTITY ge "≥">
<!ENTITY iff "⇔">
<!ENTITY infin "∞">
<!ENTITY int "∫">
<!ENTITY isin "∊">
<!ENTITY lang "〈">
<!ENTITY lArr "⇐">
<!ENTITY le "≤">
<!ENTITY minus "−">
<!ENTITY mnplus "∓">
<!ENTITY nabla "∇">
<!ENTITY ne "≠">
<!ENTITY ni "∍">
<!ENTITY or "∨">
<!ENTITY par "∥">
<!ENTITY part "∂">
<!ENTITY permil "‰">
<!ENTITY perp "⊥">
<!ENTITY prime "′">
<!ENTITY Prime "″">
<!ENTITY prop "∝">
<!ENTITY radic "√">
<!ENTITY rang "〉">
<!ENTITY rArr "⇒">
<!ENTITY sim "∼">
<!ENTITY sime "≃">
<!ENTITY square "□">
<!ENTITY sub "⊂">
<!ENTITY sube "⊆">
<!ENTITY sup "⊃">
<!ENTITY supe "⊇">
<!ENTITY there4 "∴">
<!ENTITY Verbar "‖">
<!ENTITY angst "Å">
<!ENTITY bernou "ℬ">
<!ENTITY compfn "∘">
<!ENTITY Dot "¨">
<!ENTITY DotDot "⃜">
<!ENTITY hamilt "ℋ">
<!ENTITY lagran "ℒ">
<!ENTITY lowast "∗">
<!ENTITY notin "∉">
<!ENTITY order "ℴ">
<!ENTITY phmmat "ℳ">
<!ENTITY tdot "⃛">
<!ENTITY tprime "‴">
<!ENTITY wedgeq "≙">