psamsfonts=7 \begin{center}\vbox{\input{Umsa57.fd} }\end{center}\begin{center}\vbox{\input{Umsb57.fd} }\end{center}\begin{center}\vbox{\input{Ueuf57.fd} }\end{center} ifundefinedcmex@opt =1 OMX/cmex/m/n/10 =10 \begin{center}\vbox{\input{OMXcmex.fd} }\end{center}OMX/cmex/m/n/10 ifundefined@mathmeasure ifundefined@emptytoksnewtoksemptytoks ifundefinedyen ifundefinedcheckmark ifundefinedcircledR ifundefinedmaltese &ulcorn#ulcorner; AMSa"70AMSa"70 &urcorn#urcorner;AMSa"71AMSa"71 &dlcorn#llcorner; AMSa"78AMSa"78 &drcorn#lrcorner;AMSa"79AMSa"79 @AMSa"39 @@ "0@4B &rlhar2#rightleftharpoons; &rlhar2#rightleftharpoons;AMSa"0A &ang#angle; &ang#angle;AMSa"5C &planck#hbar; &planck#hbar;AMSb"7E &sqsub#sqsubset; &sqsub#sqsubset;AMSa"40 &sqsup#sqsupset; &sqsup#sqsupset;AMSa"41 AMSb"66 Ueufmn boldUeufbn @compatibility obsoletegobblethree &square#square;AMSa"03 &loz#lozenge;AMSa"06 &vrtri#vartriangleright;AMSa"42 &vltri#vartriangleleft;AMSa"43 &rtrie#trianglerighteq;AMSa"44 <rie#trianglelefteq;AMSa"45 &rarrw#rightsquigarrow;AMSa"20 tempa &vltri#vartriangleleft; <rie#trianglelefteq; &vrtri#vartriangleright; &rtrie#trianglerighteq; &square#square; &loz#lozenge; &rarrw#rightsquigarrow;