% amsmath.4ht (2019-12-29-14:17), generated from tex4ht-4ht.tex % Copyright 1997-2009 Eitan M. Gurari % Copyright 2009-2019 TeX Users Group % % This work may be distributed and/or modified under the % conditions of the LaTeX Project Public License, either % version 1.3c of this license or (at your option) any % later version. The latest version of this license is in % http://www.latex-project.org/lppl.txt % and version 1.3c or later is part of all distributions % of LaTeX version 2005/12/01 or later. % % This work has the LPPL maintenance status "maintained". % % The Current Maintainer of this work % is the TeX4ht Project . % % If you modify this program, changing the % version identification would be appreciated. \immediate\write-1{version 2019-12-29-14:17} \HRestore\cases \HRestore\matrix \HRestore\pmatrix \append:def\a:display{\@displaytrue} \expandafter\append:defIII\csname c:$$:\endcsname{\append:def\a:display{\@displaytrue}} \def\above:tbinom#1#2#3#4{\a:tbinom} \def\:temp{% \expandafter \ifx\csname a:tbinom\endcsname\relax \else \ifx\a:tbinom\empty \else \Configure{abovewithdelims}{\above:tbinom}{}% \fi\fi \o:tbinom:} \HLet\tbinom\:temp \NewConfigure{tbinom}{1} \def\above:dbinom#1#2#3#4{\a:dbinom} \def\:temp{% \expandafter \ifx\csname a:dbinom\endcsname\relax \else \ifx\a:dbinom\empty \else \Configure{abovewithdelims}{\above:dbinom}{}% \fi\fi \o:dbinom:} \HLet\dbinom\:temp \NewConfigure{dbinom}{1} \def\above:binom#1#2#3#4{\a:binom} \def\:temp#1{% \def\:temp{% \expandafter \ifx\csname a:binom\endcsname\relax \else \ifx\a:binom\empty \else \Configure{abovewithdelims}{\above:binom}{}% \fi\fi #1}} \expandafter\:temp\expandafter{\csname o:binom :\endcsname} \expandafter\HLet\csname binom \endcsname\:temp \NewConfigure{binom}{1} \pend:def\subequations{\SkipRefstepAnchor } \NewConfigure{boldsymbol}{2} \pend:defI\boldsymbol{\a:boldsymbol} \append:defI\boldsymbol{\b:boldsymbol} \def\hdots@for#1#2{\multicolumn{#2}c% {\m@th \hdots:for{#1}\hfil}} \def\hdots:for#1{\dotsspace@1.5mu\mkern-#1\dotsspace@ \xleaders\hbox{$\m@th\mkern#1\dotsspace@.\mkern#1\dotsspace@$}% \hfill \mkern-#1\dotsspace@} \NewConfigure{hdotsfor}[1]{\def\a:hdotsfor##1{#1}} \let\a:hdotsfor=\hdots:for \def\:tempc{\a:hdotsfor} \HLet\hdots:for\:tempc \expandafter\ifx \csname tmp:muskip\endcsname\relax \csname newmuskip\endcsname \tmp:muskip \fi \expandafter\def\csname tmspace \endcsname#1#2#3{% \ifmmode \bgroup \tmp:muskip #1#2\edef\mathglue{\the\tmp:muskip}% \tmp:dim #1#3\edef\textspace{\the\tmp:dim}\a:tmspace \egroup \else \kern #1#3\fi \relax } \edef\:tempc{\noexpand\protect \expandafter\noexpand\csname tmspace \endcsname} \HLet\tmspace=\:tempc \NewConfigure{tmspace}{1} \Configure{tmspace}{\mskip\mathglue} \HRestore\over \def\:tempc{\pic:gobble\a:over \o:@@over: \pic:gobble\b:over} \HLet\@@over\:tempc \HRestore\atop \def\:tempc{\pic:gobble\a:atop \o:@@atop: \pic:gobble\b:atop} \HLet\@@atop\:tempc \def\::above{\pic:gobble\a:above \o:@@above:\tmp:dim \pic:gobble\b:above } \def\:above{\afterassignment\::above} \def\:tempc{\Protect\:above \tmp:dim=} \HLet\@@above\:tempc \HRestore\abovewithdelims \def\::abovewithdelims#1#2{\pic:gobble\a:abovewithdelims \o:@@abovewithdelims:#1#2\tmp:dim\pic:gobble\b:abovewithdelims} \def\:abovewithdelims#1#2{\def\:temp{\::abovewithdelims#1#2}% \afterassignment\:temp\tmp:dim} \def\:tempc{\Protect\:abovewithdelims } \HLet\@@abovewithdelims\:tempc \NewConfigure{abovewithdelims}{2} \HRestore\overwithdelims \def\:overwithdelims#1#2{\pic:gobble\a:overwithdelims \o:@@overwithdelims:#1#2\pic:gobble\b:overwithdelims} \def\:tempc{\Protect\:overwithdelims} \HLet\@@overwithdelims\:tempc \NewConfigure{overwithdelims}{2} \HRestore\atopwithdelims \def\:atopwithdelims#1#2{\pic:gobble\a:atopwithdelims \o:@@atopwithdelims:#1#2\pic:gobble\b:atopwithdelims} \def\:tempc{\Protect\:atopwithdelims} \HLet\@@atopwithdelims\:tempc \NewConfigure{atopwithdelims}{2} \let\ltx@label\lb:l \let\Mathaccent:\mathaccent@ \def\mathaccent@#1#2{\ifx \EndPicture\:UnDef \DN@{\Picture+{}\Mathaccent:{#1}{#2}\EndPicture}% \else\DN@{\Mathaccent:{#1}{#2}}\fi\next@} \def\:temp#1{{\a:boxed\leavevmode \vbox{\m@th$\displaystyle#1$}\b:boxed}} \HLet\boxed\:temp \NewConfigure{boxed}{2} \newcommand\:temp:xrightarrow[2][]{\a:xrightarrow {\o:xrightarrow:[#1]{#2}}\b:xrightarrow} \HLet\xrightarrow\:temp:xrightarrow \NewConfigure{xrightarrow}{2} \newcommand\:temp:xleftarrow[2][]{\a:xleftarrow {\o:xleftarrow:[#1]{#2}}\b:xleftarrow} \HLet\xleftarrow\:temp:xleftarrow \NewConfigure{xleftarrow}{2} \def\:tempc#1{\a:eqref\o:eqref:{#1}\b:eqref} \NewConfigure{eqref}{2} \def\equation{\bgroup \@fleqnfalse % \ifx \EndPicture\:Undef \def\endequation{% \let\tagform@=\:gobble \if@eqnsw \expand:after{% % \o:endequation:\b:equation\equ:no}% \else \expand:after{% \ifx\df@tag\@empty \expand:after{\o:endequation:\egroup}% \else \global\let\df:tag=\df@tag \expand:after{\o:endequation: \expandafter\b:equation\ifdefined\ams:delete:tag\else\df:tag\fi% \global\let\ams:delete:tag\@undefined }\fi }\fi \c:equation\egroup }% \expandafter\a:equation \else \def\endequation{\o:endequation:\egroup}% \fi \o:equation:} \expandafter\let\csname o:equation*:\expandafter \endcsname \csname equation*\endcsname \expandafter\let\csname o:endequation*:\expandafter \endcsname \csname endequation*\endcsname \expandafter\def\csname equation*\endcsname{\bgroup \ifx \EndPicture\:Undef \expandafter\def\csname endequation*\endcsname {% \csname o:endequation*:\endcsname\egroup% \csname b:equation*\endcsname\egroup }% \csname a:equation*\endcsname \else \expandafter\def\csname endequation*\endcsname{\csname o:endequation*:\endcsname\egroup}% \fi \csname o:equation*:\endcsname} \NewConfigure{equation*}[2]{ \expandafter\c:def \csname a:equation*\endcsname {#1\bgroup \let \@eqnnum \empty }% \expandafter\c:def \csname b:equation*\endcsname {#2}% } \expandafter\def\csname genfrac \endcsname#1#2#3#4{% \def\@tempa{#1#2}% \edef\@tempb{\@nx\@genfrac\@mathstyle{#4}% \expandafter\noexpand\csname @@\ifx @#3@over\else above\fi \ifx\@tempa\@empty \else withdelims\fi\endcsname}% \@tempb{#1#2#3}} \def\:tempc#1#2#3#4#5{{\a:genfrac#1\b:genfrac{\c:genfrac#4#2#3\relax {\d:genfrac#5\e:genfrac}}\f:genfrac}} \HLet\@genfrac\:tempc \NewConfigure{genfrac}{6} \HRestore\frac \def\:temp#1#2{{\a:frac\begingroup #1\endgroup\b:frac \@@over \c:frac #2\d:frac}} \expandafter\HLet\csname frac \endcsname\:temp \def\math@cr@@[#1]{\ifnum0=`{\fi \iffalse}\fi\math@cr@@@ \o:noalign:{\vskip#1\relax}} \catcode`\#13 \catcode`\!6 \def\reg:align!1!2{% \ifx \ifinany@\:Undef\else \inany@true\fi \inalign@true \ifx \displaybreak@\:UnDef \chardef\dspbrk@context\z@ \else \displaybreak@ \fi \intertext@ \ifingather@\else\displ@y@\fi\Let@ \let\math@cr@@@\math@cr@@@align \ifxxat@\else \let\tag\tag@in@align \fi \let\label\label@in@display !1% set st@r \ifst@rred\else \global\@eqnswtrue \fi \measure@{!2}% \global\row@\z@ \tabskip\eqnshift@ \Configure{PauseMkHalign} {\Configure{PauseMkHalign}{}{}{}{}\expandafter\clean:span}{}{}{}% % \SaveMkHalignConf:g{\align:type}\HRestore\noalign \MkHalign#{\span &\@lign$\m@th\displaystyle{{\HCode{}}% #}$% &\@lign$\m@th\displaystyle{{\HCode{}}% #}$% }!2% } \catcode`\#=6 \catcode`\!=12 \def\clean:span#1\c:halign{% \TeXhalign \bgroup \:span} \ifx \ifinany@\:Undef \def\:tempc{% \math@cr \EndMkHalign \RecallMkHalignConfig \csname b:\align:type\endcsname \ifingather@ \restorealignstate@ \egroup \nonumber \ifnum0=`{\fi\iffalse}\fi% \else $$\fi \global\@ignoretrue } \else \def\:tempc{% \math@cr \EndMkHalign \RecallMkHalignConfig \csname b:\align:type\endcsname \ifingather@ \restorealignstate@ \egroup \nonumber \ifnum0=`{\fi}% \else $$\fi \global\@ignoretrue } \fi \HLet\endalign\:tempc \def\:tempc{\pic:MkHalign{\align:type}} \HLet\align@\:tempc \def\Config:alg#1#2#3#4#5#6#7{% \expandafter\c:def\csname a:#7\endcsname{\global \let\sv:amps\add:amps #1}% \expandafter\c:def\csname b:#7\endcsname{#2\global \let\add:amps\sv:amps}% \expandafter\c:def\csname c:#7\endcsname{#3}% \expandafter\c:def\csname d:#7\endcsname{#4}% \expandafter\c:def\csname e:#7\endcsname{\expandafter\align:td \expandafter{\csname f:#7\endcsname}{#5}{#6}}% } \def\align:td#1#2#3{\iftag@ \ifnum \add:amps>0 \gHAdvance\add:amps -1 \gHAdvance\HCol -1 \global\let#1\empty \ifnum \add:amps=0 \gHAdvance\HCol1 #2\gdef#1{#3}\fi \else #2\gdef#1{#3}\fi \else \gHAssign\add:amps\HCol\relax #2\gdef#1{#3}\fi}% \def\:tempc#1{% \expandafter\pend:def\csname #1\endcsname{\def\align:type{#1}}% \NewConfigure{#1}[6]{\Config:alg{##1}{##2}{##3}{##4}{##5}{##6}{#1}}% \Configure{#1}{}{}{}{}{}{}% \def\:temp{#1}\def\:tempa{align}\ifx \:temp\:tempa\else \@xp\let\csname reg:#1\endcsname\reg:align \@xp\let\csname end#1\endcsname\endalign \fi } \:tempc{alignat} \:tempc{alignat*} \:tempc{xalignat} \:tempc{xalignat*} \:tempc{xxalignat} \:tempc{align} \:tempc{align*} \:tempc{flalign} \:tempc{flalign*} \pend:defIII\start@align{\Configure{$$}{}{}{}} \catcode`\#13 \catcode`\!6 \def\reg:start@aligned!1!2{% \savecolumn@ \vcenter \bgroup \maxfields@!2\relax \ifnum\maxfields@>\m@ne \multiply\maxfields@\tw@ \let\math@cr@@@\math@cr@@@alignedat \else \let\math@cr@@@\math@cr@@@aligned \fi \Let@ \chardef\dspbrk@context\@ne \default@tag \global\column@\z@ \SaveMkHalignConf:g{start@aligned}\HRestore\noalign \MkHalign#{&\column@plus $\m@th\displaystyle{{\HCode{}}#}$% &\column@plus $\m@th\displaystyle{{\HCode{}}#}$}% } \catcode`\#=6 \catcode`\!=12 \def\al:gned#1{% \Configure{start@aligned}{\csname a:#1\endcsname}% {\csname b:#1\endcsname}{\csname c:#1\endcsname}% {\csname d:#1\endcsname}{\csname e:#1\endcsname}% {\csname f:#1\endcsname}\pic:MkHalign{#1}} \NewConfigure{start@aligned}{6} \def\:tempc{\crcr\EndMkHalign \RecallMkHalignConfig \restorecolumn@ \egroup \b:start@aligned} \HLet\endaligned\:tempc \def\:temp{% \let\@testopt\alignsafe@testopt \futurelet\:temp\aligned:a} \def\aligned:a{\ifx [\:temp \expandafter\aligned:b \else \def\:temp{\aligned:b[c]}\expandafter\:temp \fi} \def\aligned:b[#1]{% \al:gned{aligned}{#1}\m@ne} \HLet\aligned\:temp \def\reg:aligned{\reg:start@aligned} \NewConfigure{aligned}{6} \def\:temp{\futurelet\:temp\alignedat:a} \def\alignedat:a{\ifx [\:temp \expandafter\alignedat:b \else \def\:temp{\alignedat:b[c]}\expandafter\:temp \fi} \def\alignedat:b[#1]{% \let\@testopt\alignsafe@testopt \al:gned{alignedat}{#1}\m@ne} \HLet\alignedat\:temp \def\reg:alignedat{\reg:start@aligned} \NewConfigure{alignedat}{6} \catcode`\#13 \catcode`\!6 \def\reg:gathered[!1]{% \RIfM@\else \nonmatherr@{\begin{gathered}}% \fi \null \vcenter\bgroup \Let@ \chardef\dspbrk@context\@ne \restore@math@cr \SaveMkHalignConf:g{gathered}% \MkHalign#{$\m@th\displaystyle{\HCode{}}#$}% } \catcode`\#=6 \catcode`\!=12 \def\:tempc{\crcr\EndMkHalign \RecallMkHalignConfig \egroup\b:gathered} \HLet\endgathered\:tempc \def\:temp{\pic:MkHalign{gathered}} \expandafter\HLet\csname \string\gathered\endcsname\:temp \NewConfigure{gathered}{6} \catcode`\#13 \catcode`\!6 \def\reg:multline!1{% \ifx \ifinany@\:Undef\else \inany@true\fi \Let@ \@display@init{\global\advance\row@\@ne \global\dspbrk@lvl\m@ne}% \ifx \displaybreak@\:UnDef \chardef\dspbrk@context\z@ \else \displaybreak@ \fi \restore@math@cr \let\tag\tag@in@align \global\tag@false \global\let\raise@tag\@empty \let\tag\gobble@tag \ifst@rred \let\label\@gobble \else \stepcounter{equation}% \def\label{\let\cnt:currentlabel\@currentlabel \def\:@currentlabel{\ifx \cnt:currentlabel\@currentlabel \the\c@equation\else \@currentlabel\fi}% \anc:lbl r{equation}\ltx@label}% \edef\@currentlabel{\the\c@equation}% \fi % \ifst@rred \expandafter\let\csname e:multline*\endcsname\empty \expandafter\let\csname f:multline*\endcsname\empty \fi \SaveMkHalignConf:g{multline\ifst@rred *\fi}\HRestore\noalign \MkHalign#{\hbox{$\m@th\displaystyle{\HCode{}}% #$}}!1% } \catcode`\#=6 \catcode`\!=12 \def\:tempc{\ifst@rred\else \e:multline\csname a:multline-num\endcsname \tagform@\theequation\csname b:multline-num\endcsname\f:multline \fi \math@cr \EndMkHalign \RecallMkHalignConfig \csname b:multline\ifst@rred *\fi\endcsname $$\global\@ignoretrue } \HLet\endmultline\:tempc \def\:tempc{\pic:MkHalign{multline\ifst@rred *\fi}} \HLet\multline@\:tempc \NewConfigure{multline}{6} \NewConfigure{multline-num}{2} \@xp\let\csname reg:multline*\endcsname\reg:multline \@xp\let\csname endmultline*\endcsname\endmultline \NewConfigure{multline*}{4} \catcode`\#13 \catcode`\!6 \def\reg:gather!1{% \ingather@true \ifx \ifinany@\:Undef \let\split\insplit@ \chardef\dspbrk@context\z@ \else \inany@true \fi % \let\tag\tag@in@align \let\label\label@in@display \intertext@ \displ@y@ \Let@ \let\math@cr@@@\math@cr@@@gather \global\shifttag@false \global\row@\@ne \SaveMkHalignConf:g{gather\ifst@rred *\fi}\HRestore\noalign \MkHalign#{\hbox{$\m@th\displaystyle{{\HCode{}}% #}$}% &\hbox{{\HCode{}}% #}% }!1% } \catcode`\#=6 \catcode`\!=12 \def\:tempc{\math@cr \EndMkHalign \RecallMkHalignConfig \csname b:gather\ifst@rred *\fi\endcsname $$\global\@ignoretrue } \HLet\endgather\:tempc \def\:tempc{\pic:MkHalign{gather\ifst@rred *\fi}} \HLet\gather@\:tempc \NewConfigure{gather}{6} \@xp\let\csname reg:gather*\endcsname\reg:gather \@xp\let\csname endgather*\endcsname\endgather \NewConfigure{gather*}{6} \def\:tempc{% \def\intertext##1{% \ifvmode\else\\\@empty\fi \noalign{% \penalty\postdisplaypenalty\vskip\belowdisplayskip \vbox{\normalbaselines \ifdim\linewidth=\columnwidth \else \parshape\@ne \@totalleftmargin \linewidth \fi \a:intertext \noindent##1\b:intertext\par}% \penalty\predisplaypenalty\vskip\abovedisplayskip% }% }} \HLet\intertext@=\:tempc \NewConfigure{intertext}{2} \HLet\leftroot\:gobble \HLet\uproot\:gobble \catcode`\#13 \catcode`\!6 \def\reg:smallmatrix{% \vcenter\bgroup \Let@\restore@math@cr\default@tag \SaveMkHalignConf:g{smallmatrix}% \MkHalign#{$\m@th\scriptstyle#$&&% $\m@th\scriptstyle#$}% } \catcode`\#=6 \catcode`\!=12 \def\:tempc{\crcr\EndMkHalign \RecallMkHalignConfig \egroup\b:smallmatrix} \HLet\endsmallmatrix\:tempc \def\:temp{\pic:MkHalign{smallmatrix}} \HLet\smallmatrix\:temp \NewConfigure{smallmatrix}{6} \pend:defI\substack{\a:substack} \append:defI\substack{\b:substack} \NewConfigure{substack}{2} \catcode`\#13 \catcode`\!6 \def\reg:subarray!1{% \vcenter\bgroup \Let@ \restore@math@cr \default@tag \baselineskip\fontdimen10 \scriptfont\tw@ \advance\baselineskip\fontdimen12 \scriptfont\tw@ \lineskip\thr@@\fontdimen8 \scriptfont\thr@@ \let\e:subarray\empty \let\f:subarray\empty \everycr{}\SaveMkHalignConf:g{subarray}% \MkHalign#{$\m@th\scriptstyle#$}% } \catcode`\#=6 \catcode`\!=12 \def\:tempc{\crcr\EndMkHalign \RecallMkHalignConfig \egroup\b:subarray} \HLet\endsubarray\:tempc \def\:temp#1{\def\Hlcr{#1}\pic:MkHalign{subarray}{#1}} \HLet\subarray\:temp \NewConfigure{subarray}{4} \NewConfigure{split}{6} \catcode`\#13 \catcode`\!6 \def\:tempc{% \vbox\bgroup \ifx \ifinany@\:Undef \chardef\dspbrk@context\@ne \fi % \Let@ \restore@math@cr \default@tag \everycr{}\a:split \SaveMkHalignConf:g{split}\HRestore\noalign \MkHalign#{ $\m@th\displaystyle{{\HCode{}}% #}$% &$\m@th\displaystyle{{\HCode{}}% #}$% }} \HLet\insplit@\:tempc \catcode`\#6 \catcode`\!12 \def\:tempc{% \crcr\EndMkHalign \b:split \egroup } \HLet\endsplit\:tempc \Configure{@begin} {split} {\relax \ifx \split\insplit@ \else \def\choose:begin{\global\let\choose:begin\@firstoftwo \@secondoftwo}% \fi } \NewConfigure{equations}[2]{\def\pic:equa{#1}\def\pic:equb{#2}} \def\str:pic{\ifx \EndPicture\:UnDef \expandafter\Picture\pic:equa{ \pic:equb}% \else \let\EndPicture\empty \fi \let\halign\TeXhalign} \def\make@df@tag@@#1{% \gdef\df@tag{\maketag@@@{#1}\def\@currentlabel{#1}\gdef\ams:delete:tag{}% \let\cnt:currentlabel\@currentlabel \def\:@currentlabel{\ifx \cnt:currentlabel\@currentlabel \expandafter\the\csname c@equation\endcsname\else \@currentlabel\fi}% % \anc:lbl r{}% }} \def\make@df@tag@@@#1{\gdef\df@tag{\tagform@{#1}% \toks@\@xp{\p@equation{#1}}\edef\@currentlabel{\the\toks@}% \let\cnt:currentlabel\@currentlabel \def\:@currentlabel{\ifx \cnt:currentlabel\@currentlabel \expandafter\the\csname c@equation\endcsname\else \@currentlabel\fi}% % \anc:lbl r{}% }} \:CheckOption{new-accents} \if:Option \else \HLet\Hat\hat \HLet\Check\check \HLet\Tilde\tilde \HLet\Acute\acute \HLet\Grave\grave \HLet\Dot\dot \HLet\Ddot\ddot \HLet\Breve\breve \HLet\Bar\bar \HLet\Vec\vec \fi \expandafter\def\csname [ \endcsname{\st:Math} \expandafter\def\csname ] \endcsname{\ed:Math} \let\:tempc\measure@ \pend:defI\:tempc{\bgroup \RecallTeXcr \HRestore\noalign \let\EndPicture\empty \let\halign\TeXhalign \let\span\:span \HRestore\begin \HRestore\end \a:measure@ } \append:defI\:tempc{\egroup} \HLet\measure@\:tempc \NewConfigure{measure@}{1} \HLet\savealignstate@\empty \renewcommand{\n:smash:}[2][tb]{% \def\smash@{#1}% \ifmmode\@xp\o:mathpalette:\@xp\mathsm@sh\else \@xp\makesm@sh\fi{#2}} \let\:tempc\maketag@@@ \pend:defI\:tempc{\a:maketag} \append:defI\:tempc{\b:maketag} \NewConfigure{maketag}{2} \HLet\maketag@@@\:tempc \MathSymbol\mathrel{@cdots} \MathSymbol\mathop{doteq} \def\n:doteq:{\expandafter\:same \math:sym\mathop{doteq}\nolimits} \HLet\dotsb@=\@cdots \HLet\intdots@=\@cdots \HRestore\cdots \MathSymbol\mathop{iint} \def\n:iint:{\expandafter\:same \math:sym\mathop{iint}\nolimits} \MathSymbol\mathop{iiint} \def\n:iiint:{\expandafter\:same \math:sym\mathop{iiint}\nolimits} \MathSymbol\mathop{iiiint} \def\n:iiiint:{\expandafter\:same \math:sym\mathop{iiiint}\nolimits} \MathSymbol\mathop{idotsint} \def\n:idotsint:{\expandafter\:same \math:sym\mathop{idotsint}\nolimits} \def\:tempc#1{\a:underrightarrow \o:underrightarrow:{#1}\b:underrightarrow} \HLet\underrightarrow\:tempc \NewConfigure{underrightarrow}{2} \def\:tempc#1{\a:underleftarrow \o:underleftarrow:{#1}\b:underleftarrow} \HLet\underleftarrow\:tempc \NewConfigure{underleftarrow}{2} \def\:tempc#1{\a:overleftrightarrow \o:overleftrightarrow:{#1}\b:overleftrightarrow} \HLet\overleftrightarrow\:tempc \NewConfigure{overleftrightarrow}{2} \def\:tempc#1{\a:underleftrightarrow \o:underleftrightarrow:{#1}\b:underleftrightarrow} \HLet\underleftrightarrow\:tempc \NewConfigure{underleftrightarrow}{2} \def\:tempc#1#2#3{\a:underarrow@ \hbox{$\m@th#2#3$}\b:underarrow@ \hbox{#1#2}\c:underarrow@ } \HLet\underarrow@\:tempc \def\:tempc#1#2#3{\a:overarrow@ \hbox{#1#2}\b:overarrow@ \hbox{$\m@th#2#3$}\c:overarrow@ } \HLet\overarrow@\:tempc \NewConfigure{underarrow@}{3} \NewConfigure{overarrow@}{3} \def\:temp#1#2{\a:overset\binrel@{#2}% \binrel@@{\mathop{\kern\z@#2}\limits^{#1}}\b:overset} \HLet\overset\:temp \NewConfigure{overset}{2} \def\:temp#1#2{\a:underset\binrel@{#2}% \binrel@@{\mathop{\kern\z@#2}\limits_{#1}}\b:underset} \HLet\underset\:temp \NewConfigure{underset}{2} \MathSymbol\mathop{dotsc} \MathSymbol\mathop{dotso} \MathSymbol\mathrel{longleftarrow} \MathSymbol\mathrel{longrightarrow} \ifx \ifinany@\:Undef \let\:tempc\gather@split \append:defIII\:tempc{% \def\endmathdisplay@a{% \math@cr \EndMkHalign \RecallMkHalignConfig \csname b:gather\ifst@rred *\fi\endcsname \egroup }% } \HLet\gather@split\:tempc \else \:warning{ams files too old for TeX4ht} \fi \Hinput{amsmath} \endinput