<!-- Macmillan ELS Entities -->
<!-- Created 6/6/95, updated 9/1 and 13/2/96 by Ashwin Mistry, updated 9/11/98, 6/3/00 by Derek Revill -->

<!ENTITY disk  "[disk ]"> <!--solid disk-->
<!ENTITY empty  "[empty ]"> <!--empty set-->
<!ENTITY frac17  "[frac17 ]"> <!--fraction one seventh-->
<!ENTITY hash  "[hash ]"> <!--hash-->
<!ENTITY image  "[image ]"> <!--black-letter I-->
<!ENTITY phis  "[phis ]"> <!--greek small letter phi-->
<!ENTITY real  "[real ]"> <!--black-letter R  -->
<!ENTITY rlhar2  "[rlhar2 ]"> <!--right harpoon over left harpoon-->
<!ENTITY weierp  "[weierp ]"> <!--script P-->
<!ENTITY xtilde  "[xtilde ]"> <!--xtilde-->
<!ENTITY tab  "[tab ]"> <!--Hard Tab-->
<!ENTITY space  "[space ]"> <!--Hard Space-->
<!ENTITY rbreve  "[rbreve ]"> <!--r breve-->
<!ENTITY diamond  "[diamond ]"> <!--black diamond-->
<!ENTITY dotmin  "[dotmin ]"> <!--dot minus-->
<!ENTITY Vdot  "[Vdot ]"> <!--V dot-->
<!ENTITY vdot  "[vdot ]"> <!--v dot-->
<!ENTITY Qdot  "[Qdot ]"> <!--Q dot-->
<!ENTITY increm  "[increm ]"> <!--Increment -->
<!ENTITY larr2  "[larr2 ]"> <!--Left Paired Arrows -->
<!ENTITY lrarr2  "[lrarr2 ]"> <!--Left Arrow over Right Arrow -->
<!ENTITY lrhar2  "[lrhar2 ]"> <!--Left Harpoon over Right Harpoon -->
<!ENTITY nequiv  "[nequiv ]"> <!--Not Identical To -->
<!ENTITY rarr2  "[rarr2 ]"> <!--Right Paired Arrows -->
<!ENTITY rhom  "[rhom ]"> <!--White Diamond -->
<!ENTITY rhomf  "[rhomf ]"> <!--Black Diamond -->
<!ENTITY rlarr2  "[rlarr2 ]"> <!--Right Arrow over Left Arrow -->
<!ENTITY ualdarr  "[ualdarr ]"> <!--Up Arrow Left of Down Arrow -->
<!ENTITY uarr2  "[uarr2 ]"> <!--Up Paired Arrows -->
<!ENTITY vlolly  "[vlolly ]"> <!--Forms Heavy Up and Light Down -->
<!ENTITY vmacr  "[vmacr ]"> <!--v Macron -->
<!ENTITY wavyline  "[wavyline ]"> <!--Wavyline -->
<!ENTITY xrtri  "[xrtri ]"> <!--White Right Pointing Triangle -->
<!ENTITY xsquf  "[xsquf ]"> <!--Black Square -->
<!ENTITY xutrif  "[xutrif ]"> <!--Black Up Pointing Triangle -->
<!ENTITY Ddot  "[Ddot ]"> <!--D dot -->
<!ENTITY cirf  "[cirf ]"> <!--Black Circle -->
<!ENTITY darr2  "[darr2 ]"> <!--Down Paired Arrows -->
<!ENTITY frachalf  "[frachalf ]"> <!--Fraction one half -->
<!ENTITY mgrave  "[mgrave ]"> <!--m grave -->
<!ENTITY ocaron  "[ocaron ]"> <!--o caron -->
<!ENTITY xmacr  "[xmacr ]"> <!--x macron -->
<!ENTITY vmltx  "[vmltx ]"> <!--heavy multiplication x -->
<!ENTITY vert  "[vert ]"> <!--vertical pipe character -->

<!ENTITY Asubiital  "[Asubiital ]"> <!--cap A, superscript i -->
<!ENTITY Esup1sub0  "[Esup1sub0 ]"> <!--cap italic E, superscript 1, subscript 0 -->
<!ENTITY Esup1sub0red  "[Esup1sub0red ]"> <!--cap italic E, superscript 1, subscript '0(red)' -->
<!ENTITY Hsupplus  "[Hsupplus ]"> <!--cap H, superscript plus-->
<!ENTITY Hsupplussub4  "[Hsupplussub4 ]"> <!--cap H, superscript plus subscript 4-->
<!ENTITY krarr  "[krarr ]"> <!--small italic k with right facing arrow above-->
<!ENTITY klarr  "[klarr ]"> <!--small italic k with left facing arrow above-->
<!ENTITY Kcirc  "[Kcicr ]"> <!--cap K with circumflex-->
<!ENTITY Ktilde  "[Ktilde ]"> <!--cap K with tilde-->
<!ENTITY lswirl  "[lswirl ]"> <!--small swirling l-->
<!ENTITY msup2sub6  "[msup2sub6 ]"> <!--small m, superscript 2 subscript 6-->
<!ENTITY Nitalmacr  "[Nitalmacr ]"> <!--cap italic N with macron-->
<!ENTITY Osupminsub2  "[Osupminsub2 ]"> <!--cap O, superscript minus subscript 2-->
<!ENTITY Osupminsub3  "[Osupminsub3 ]"> <!--cap O, superscipt minus subscript 3-->
<!ENTITY Odiasupminsub2  "[Odiasupminsub2 ]"> <!--cap O, diatomic oxygen radical, superscript minus -->
<!ENTITY ksubcat  "[ksubcat ]"> <!--small italic k with subscript 'cat'-->
<!ENTITY qitalcirc  "[qitalcirc ]"> <!--small italic q with circumflex-->
<!ENTITY Osup2minsub3  "[Osup2minsub3 ]"> <!--cap O, superscript 2 minus, subscript 3-->
<!ENTITY Ssub2  "[Ssub2 ]"> <!--cap S, subscript 2-->
<!ENTITY Ssup2minsub2  "[Ssup2minsub2 ]"> <!--cap S, superscript 2 minus, subscript 2-->
<!ENTITY sup3sub2T  "[sup3sub2T ]"> <!--superscript 3, subscript2, cap T-->
<!ENTITY vmacr  "[vmacr ]"> <!--small v with macron-->
<!ENTITY xitalsuprsubi  "[xitalsuprsubi ]"> <!--small italic x, superscript r, subscript i-->
<!ENTITY zitalsup2  "[zitalsup2 ]"> <!--small italic z, superscript 2-->
<!ENTITY Piscripts  "[Piscripts ]"> <!--cap Pi, superscript italic n, subscript i=1-->
<!ENTITY phimacrital  "[phimacrital ]"> <!--small italic phi with macron-->
<!ENTITY deltarbar  "[deltarbar ]"> <!--delta small r with overbar-->
<!ENTITY Yshape  "[Yshape ]"> <!--Y shape symbol-->