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+<!-- (C) International Organization for Standardization 1986
+     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 % ISOamsb PUBLIC
+       "ISO 8879:1986//ENTITIES Added Math Symbols: Binary Operators//EN">
+     %ISOamsb;
+-->
+<!ENTITY amalg  SDATA "[amalg ]"--/amalg B: amalgamation or coproduct-->
+<!ENTITY Barwed SDATA "[Barwed]"--/doublebarwedge B: log and, dbl bar-->
+<!ENTITY barwed SDATA "[barwed]"--/barwedge B: logical and, bar above-->
+<!ENTITY Cap    SDATA "[Cap   ]"--/Cap /doublecap B: dbl intersection-->
+<!ENTITY Cup    SDATA "[Cup   ]"--/Cup /doublecup B: dbl union-->
+<!ENTITY cuvee  SDATA "[cuvee ]"--/curlyvee B: curly logical or-->
+<!ENTITY cuwed  SDATA "[cuwed ]"--/curlywedge B: curly logical and-->
+<!ENTITY diam   SDATA "[diam  ]"--/diamond B: open diamond-->
+<!ENTITY divonx SDATA "[divonx]"--/divideontimes B: division on times-->
+<!ENTITY intcal SDATA "[intcal]"--/intercal B: intercal-->
+<!ENTITY lthree SDATA "[lthree]"--/leftthreetimes B:-->
+<!ENTITY ltimes SDATA "[ltimes]"--/ltimes B: times sign, left closed-->
+<!ENTITY minusb SDATA "[minusb]"--/boxminus B: minus sign in box-->
+<!ENTITY oast   SDATA "[oast  ]"--/circledast B: asterisk in circle-->
+<!ENTITY ocir   SDATA "[ocir  ]"--/circledcirc B: open dot in circle-->
+<!ENTITY odash  SDATA "[odash ]"--/circleddash B: hyphen in circle-->
+<!ENTITY odot   SDATA "[odot  ]"--/odot B: middle dot in circle-->
+<!ENTITY ominus SDATA "[ominus]"--/ominus B: minus sign in circle-->
+<!ENTITY oplus  SDATA "[oplus ]"--/oplus B: plus sign in circle-->
+<!ENTITY osol   SDATA "[osol  ]"--/oslash B: solidus in circle-->
+<!ENTITY otimes SDATA "[otimes]"--/otimes B: multiply sign in circle-->
+<!ENTITY plusb  SDATA "[plusb ]"--/boxplus B: plus sign in box-->
+<!ENTITY plusdo SDATA "[plusdo]"--/dotplus B: plus sign, dot above-->
+<!ENTITY rthree SDATA "[rthree]"--/rightthreetimes B:-->
+<!ENTITY rtimes SDATA "[rtimes]"--/rtimes B: times sign, right closed-->
+<!ENTITY sdot   SDATA "[sdot  ]"--/cdot B: small middle dot-->
+<!ENTITY sdotb  SDATA "[sdotb ]"--/dotsquare /boxdot B: small dot in box-->
+<!ENTITY setmn  SDATA "[setmn ]"--/setminus B: reverse solidus-->
+<!ENTITY sqcap  SDATA "[sqcap ]"--/sqcap B: square intersection-->
+<!ENTITY sqcup  SDATA "[sqcup ]"--/sqcup B: square union-->
+<!ENTITY ssetmn SDATA "[ssetmn]"--/smallsetminus B: sm reverse solidus-->
+<!ENTITY sstarf SDATA "[sstarf]"--/star B: small star, filled-->
+<!ENTITY timesb SDATA "[timesb]"--/boxtimes B: multiply sign in box-->
+<!ENTITY top    SDATA "[top   ]"--/top B: inverted perpendicular-->
+<!ENTITY uplus  SDATA "[uplus ]"--/uplus B: plus sign in union-->
+<!ENTITY wreath SDATA "[wreath]"--/wr B: wreath product-->
+<!ENTITY xcirc  SDATA "[xcirc ]"--/bigcirc B: large circle-->
+<!ENTITY xdtri  SDATA "[xdtri ]"--/bigtriangledown B: big dn tri, open-->
+<!ENTITY xutri  SDATA "[xutri ]"--/bigtriangleup B: big up tri, open-->
+<!ENTITY coprod SDATA "[coprod]"--/coprod L: coproduct operator-->
+<!ENTITY prod   SDATA "[prod  ]"--/prod L: product operator-->
+<!ENTITY sum    SDATA "[sum   ]"--/sum L: summation operator-->