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<!-- (C) International Organization for Standardization 1991
     Permission to copy in any form is granted for use with
     conforming SGML systems and applications as defined in
     ISO 8879, provided this notice is included in all copies.
-->
<!-- Character entity set. Typical invocation:
     <!ENTITY % ISOTECH  PUBLIC
       "ISO 9573-13:1991//ENTITIES General Technical //EN">
     %ISOTECH;
-->
<!ENTITY acd      SDATA "[acd     ]" --ac current-->
<!ENTITY aleph    SDATA "[aleph   ]" --/aleph aleph, Hebrew-->
<!ENTITY and      SDATA "[and     ]" --/wedge /land B: logical and-->
<!ENTITY And      SDATA "[And     ]" --dbl logical and-->
<!ENTITY andand   SDATA "[andand  ]" --two logical and-->
<!ENTITY andd     SDATA "[andd    ]" --and, horizontal dash-->
<!ENTITY andslope SDATA "[andslope]" --sloping large and-->
<!ENTITY andv     SDATA "[andv    ]" --and with middle stem-->
<!ENTITY angrt    SDATA "[angrt   ]" --right (90 degree) angle-->
<!ENTITY angsph   SDATA "[angsph  ]" --/sphericalangle angle-spherical-->
<!ENTITY angst    SDATA "[angst   ]" --Angstrom capital A, ring-->
<!ENTITY ap       SDATA "[ap      ]" --/approx R: approximate-->
<!ENTITY apacir   SDATA "[apacir  ]" --approximate, circumflex accent-->
<!ENTITY awconint SDATA "[awconint]" --contour integral, anti-clockwise-->
<!ENTITY awint    SDATA "[awint   ]" --anti clock-wise integration-->
<!ENTITY becaus   SDATA "[becaus  ]" --/because R: because-->
<!ENTITY bernou   SDATA "[bernou  ]" --Bernoulli function (script capital B)-->
<!ENTITY bne      SDATA "[bne     ]" --reverse not equal-->
<!ENTITY bnequiv  SDATA "[bnequiv ]" --reverse not equivalent-->
<!ENTITY bnot     SDATA "[bnot    ]" --reverse not-->
<!ENTITY bNot     SDATA "[bNot    ]" --reverse not with two horizontal strokes-->
<!ENTITY bottom   SDATA "[bottom  ]" --/bot bottom-->
<!ENTITY cap      SDATA "[cap     ]" --/cap B: intersection-->
<!ENTITY Cconint  SDATA "[Cconint ]" --triple contour integral operator-->
<!ENTITY cirfnint SDATA "[cirfnint]" --circulation function-->
<!ENTITY compfn   SDATA "[compfn  ]" --/circ B: composite function (small circle)-->
<!ENTITY cong     SDATA "[cong    ]" --/cong R: congruent with-->
<!ENTITY conint   SDATA "[conint  ]" --/oint L: contour integral operator-->
<!ENTITY Conint   SDATA "[Conint  ]" --double contour integral operator-->
<!ENTITY ctdot    SDATA "[ctdot   ]" --/cdots, three dots, centered-->
<!ENTITY cup      SDATA "[cup     ]" --/cup B: union or logical sum-->
<!ENTITY cwconint SDATA "[cwconint]" --contour integral, clockwise-->
<!ENTITY cwint    SDATA "[cwint   ]" --clockwise integral-->
<!ENTITY cylcty   SDATA "[cylcty  ]" --cylindricity-->
<!ENTITY disin    SDATA "[disin   ]" --set membership, long horizontal stroke-->
<!ENTITY Dot      SDATA "[Dot     ]" --dieresis or umlaut mark-->
<!ENTITY DotDot   SDATA "[DotDot  ]" --four dots above-->
<!ENTITY dsol     SDATA "[dsol    ]" --solidus, bar above-->
<!ENTITY dtdot    SDATA "[dtdot   ]" --/ddots, three dots, descending-->
<!ENTITY dwangle  SDATA "[dwangle ]" --large downward pointing angle-->
<!ENTITY elinters SDATA "[elinters]" --electrical intersection-->
<!ENTITY epar     SDATA "[epar    ]" --parallel, equal; equal or parallel-->
<!ENTITY eparsl   SDATA "[eparsl  ]" --parallel, slanted, equal; homothetically congruent to-->
<!ENTITY equiv    SDATA "[equiv   ]" --/equiv R: identical with-->
<!ENTITY eqvparsl SDATA "[eqvparsl]" --equivalent, equal; congruent and parallel-->
<!ENTITY exist    SDATA "[exist   ]" --/exists at least one exists-->
<!ENTITY fltns    SDATA "[fltns   ]" --flatness-->
<!ENTITY fnof     SDATA "[fnof    ]" --function of (italic small f)-->
<!ENTITY forall   SDATA "[forall  ]" --/forall for all-->
<!ENTITY fpartint SDATA "[fpartint]" --finite part integral-->
<!ENTITY ge       SDATA "[ge      ]" --/geq /ge R: greater-than-or-equal-->
<!ENTITY hamilt   SDATA "[hamilt  ]" --Hamiltonian (script capital H)-->
<!ENTITY iff      SDATA "[iff     ]" --/iff if and only if-->
<!ENTITY iinfin   SDATA "[iinfin  ]" --infinity sign, incomplete-->
<!ENTITY imped    SDATA "[imped   ]" --impedance-->
<!ENTITY infin    SDATA "[infin   ]" --/infty infinity-->
<!ENTITY infintie SDATA "[infintie]" --tie, infinity-->
<!ENTITY int      SDATA "[int     ]" --/int L: integral operator-->
<!ENTITY Int      SDATA "[Int     ]" --double integral operator-->
<!ENTITY intlarhk SDATA "[intlarhk]" --integral, left arrow with hook-->
<!ENTITY isin     SDATA "[isin    ]" --/in R: set membership-->
<!ENTITY isindot  SDATA "[isindot ]" --set membership, dot above-->
<!ENTITY isinE    SDATA "[isinE   ]" --set membership, two horizontal strokes-->
<!ENTITY isins    SDATA "[isins   ]" --set membership, vertical bar on horizontal stroke-->
<!ENTITY isinsv   SDATA "[isinsv  ]" --large set membership, vertical bar on horizontal stroke-->
<!ENTITY isinv    SDATA "[isinv   ]" --set membership, variant-->
<!ENTITY lagran   SDATA "[lagran  ]" --Lagrangian (script capital L)-->
<!ENTITY lang     SDATA "[lang    ]" --/langle O: left angle bracket-->
<!ENTITY Lang     SDATA "[Lang    ]" --left angle bracket, double-->
<!ENTITY lArr     SDATA "[lArr    ]" --/Leftarrow A: is implied by-->
<!ENTITY lbbrk    SDATA "[lbbrk   ]" --left broken bracket-->
<!ENTITY le       SDATA "[le      ]" --/leq /le R: less-than-or-equal-->
<!ENTITY loang    SDATA "[loang   ]" --left open angular bracket-->
<!ENTITY lobrk    SDATA "[lobrk   ]" --left open bracket-->
<!ENTITY lopar    SDATA "[lopar   ]" --left open parenthesis-->
<!ENTITY lowast   SDATA "[lowast  ]" --low asterisk-->
<!ENTITY minus    SDATA "[minus   ]" --B: minus sign-->
<!ENTITY mnplus   SDATA "[mnplus  ]" --/mp B: minus-or-plus sign-->
<!ENTITY nabla    SDATA "[nabla   ]" --/nabla del, Hamilton operator-->
<!ENTITY ne       SDATA "[ne      ]" --/ne /neq R: not equal-->
<!ENTITY nedot    SDATA "[nedot   ]" --not equal, dot-->
<!ENTITY nhpar    SDATA "[nhpar   ]" --not, horizontal, parallel-->
<!ENTITY ni       SDATA "[ni      ]" --/ni /owns R: contains-->
<!ENTITY nis      SDATA "[nis     ]" --contains, vertical bar on horizontal stroke-->
<!ENTITY nisd     SDATA "[nisd    ]" --contains, long horizontal stroke-->
<!ENTITY niv      SDATA "[niv     ]" --contains, variant-->
<!ENTITY Not      SDATA "[Not     ]" --not with two horizontal strokes-->
<!ENTITY notin    SDATA "[notin   ]" --/notin N: negated set membership-->
<!ENTITY notindot SDATA "[notindot]" --negated set membership, dot above-->
<!ENTITY notinE   SDATA "[notinE  ]" --negated set membership, two horizontal strokes-->
<!ENTITY notinva  SDATA "[notinva ]" --negated set membership, variant-->
<!ENTITY notinvb  SDATA "[notinvb ]" --negated set membership, variant-->
<!ENTITY notinvc  SDATA "[notinvc ]" --negated set membership, variant-->
<!ENTITY notni    SDATA "[notni   ]" --negated contains-->
<!ENTITY notniva  SDATA "[notniva ]" --negated contains, variant-->
<!ENTITY notnivb  SDATA "[notnivb ]" --contains, variant-->
<!ENTITY notnivc  SDATA "[notnivc ]" --contains, variant-->
<!ENTITY nparsl   SDATA "[nparsl  ]" --not parallel, slanted-->
<!ENTITY npart    SDATA "[npart   ]" --not partial differential-->
<!ENTITY npolint  SDATA "[npolint ]" --line integration, not including the pole-->
<!ENTITY nvinfin  SDATA "[nvinfin ]" --not, vert, infinity-->
<!ENTITY olcross  SDATA "[olcross ]" --circle, cross-->
<!ENTITY or       SDATA "[or      ]" --/vee /lor B: logical or-->
<!ENTITY Or       SDATA "[Or      ]" --dbl logical or-->
<!ENTITY ord      SDATA "[ord     ]" --or, horizontal dash-->
<!ENTITY order    SDATA "[order   ]" --order of (script small o)-->
<!ENTITY oror     SDATA "[oror    ]" --two logical or-->
<!ENTITY orslope  SDATA "[orslope ]" --sloping large or-->
<!ENTITY orv      SDATA "[orv     ]" --or with middle stem-->
<!ENTITY par      SDATA "[par     ]" --/parallel R: parallel-->
<!ENTITY parsl    SDATA "[parsl   ]" --parallel, slanted-->
<!ENTITY part     SDATA "[part    ]" --/partial partial differential-->
<!ENTITY permil   SDATA "[permil  ]" --per thousand-->
<!ENTITY perp     SDATA "[perp    ]" --/perp R: perpendicular-->
<!ENTITY pertenk  SDATA "[pertenk ]" --per 10 thousand-->
<!ENTITY phmmat   SDATA "[phmmat  ]" --physics M-matrix (script capital M)-->
<!ENTITY pointint SDATA "[pointint]" --integral around a point operator-->
<!ENTITY prime    SDATA "[prime   ]" --/prime prime or minute-->
<!ENTITY Prime    SDATA "[Prime   ]" --double prime or second-->
<!ENTITY profalar SDATA "[profalar]" --all-around profile-->
<!ENTITY profline SDATA "[profline]" --profile of a line-->
<!ENTITY profsurf SDATA "[profsurf]" --profile of a surface-->
<!ENTITY prop     SDATA "[prop    ]" --/propto R: is proportional to-->
<!ENTITY qint     SDATA "[qint    ]" --/iiiint quadruple integral operator-->
<!ENTITY qprime   SDATA "[qprime  ]" --quadruple prime-->
<!ENTITY quatint  SDATA "[quatint ]" --quaternion integral operator-->
<!ENTITY radic    SDATA "[radic   ]" --/surd radical-->
<!ENTITY rang     SDATA "[rang    ]" --/rangle C: right angle bracket-->
<!ENTITY Rang     SDATA "[Rang    ]" --right angle bracket, double-->
<!ENTITY rArr     SDATA "[rArr    ]" --/Rightarrow A: implies-->
<!ENTITY rbbrk    SDATA "[rbbrk   ]" --right broken bracket-->
<!ENTITY roang    SDATA "[roang   ]" --right open angular bracket-->
<!ENTITY robrk    SDATA "[robrk   ]" --right open bracket-->
<!ENTITY ropar    SDATA "[ropar   ]" --right open parenthesis-->
<!ENTITY rppolint SDATA "[rppolint]" --line integration, rectangular path around pole-->
<!ENTITY scpolint SDATA "[scpolint]" --line integration, semi-circular path around pole-->
<!ENTITY sim      SDATA "[sim     ]" --/sim R: similar-->
<!ENTITY simdot   SDATA "[simdot  ]" --similar, dot-->
<!ENTITY sime     SDATA "[sime    ]" --/simeq R: similar, equals-->
<!ENTITY smeparsl SDATA "[smeparsl]" --similar, parallel, slanted, equal-->
<!ENTITY square   SDATA "[square  ]" --/square, square-->
<!ENTITY squarf   SDATA "[squarf  ]" --/blacksquare, square, filled-->
<!ENTITY strns    SDATA "[strns   ]" --straightness-->
<!ENTITY sub      SDATA "[sub     ]" --/subset R: subset or is implied by-->
<!ENTITY sube     SDATA "[sube    ]" --/subseteq R: subset, equals-->
<!ENTITY sup      SDATA "[sup     ]" --/supset R: superset or implies-->
<!ENTITY supe     SDATA "[supe    ]" --/supseteq R: superset, equals-->
<!ENTITY tdot     SDATA "[tdot    ]" --three dots above-->
<!ENTITY there4   SDATA "[there4  ]" --/therefore R: therefore-->
<!ENTITY tint     SDATA "[tint    ]" --/iiint triple integral operator-->
<!ENTITY top      SDATA "[top     ]" --/top top-->
<!ENTITY topbot   SDATA "[topbot  ]" --top and bottom-->
<!ENTITY topcir   SDATA "[topcir  ]" --top, circle below-->
<!ENTITY tprime   SDATA "[tprime  ]" --triple prime-->
<!ENTITY utdot    SDATA "[utdot   ]" --three dots, ascending-->
<!ENTITY uwangle  SDATA "[uwangle ]" --large upward pointing angle-->
<!ENTITY vangrt   SDATA "[vangrt  ]" --right angle, variant-->
<!ENTITY veeeq    SDATA "[veeeq   ]" --logical or, equals-->
<!ENTITY Verbar   SDATA "[Verbar  ]" --/Vert dbl vertical bar-->
<!ENTITY wedgeq   SDATA "[wedgeq  ]" --/wedgeq R: corresponds to (wedge, equals)-->
<!ENTITY xnis     SDATA "[xnis    ]" --large contains, vertical bar on horizontal stroke-->