COMMENT ⊗   VALID 00006 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	\chcode'173←1 \chcode'176←2 \chcode'44←3 \chcode'26←4
C00009 00003	\:@←cmathx \:a←cmr10 \:b←bsr10[fnt,dek] \:c←bsr8[fnt,dek]
C00013 00004	\def\beginpaper{\gdef\tpage{T}\gdef\rauth{}\gdef\rtitle{}\gdef\theauthaddr{}
C00018 00005	\output{\baselineskip 0pt\lineskip0pt	% beginning of output routine, resets skips
C00021 00006	\setcount0 959
C00028 ENDMK
C⊗;
\chcode'173←1 \chcode'176←2 \chcode'44←3 \chcode'26←4
\chcode'45←5 \chcode'43←6 \chcode'136←7 \chcode 1←8

% this format simulates Bulletin of the American Math Society

\def\lft#1{#1\hfill}
\def\ctr#1{\hfill#1\hfill}
\def\rt#1{\hfill#1}
\def\top#1{#1\vfill}
\def\mid#1{\vfill#1\vfill}
\def\bot#1{\vfill#1}

\def\rjustline#1{\hbox to size{\hskip0pt plus1000cm minus1000cm #1}}
\def\ctrline#1{\hbox to size{\hskip0pt plus1000cm minus1000cm #1\hskip0pt
	plus1000cm minus1000cm}}

\def\trace{\chpar0←} \def\jpar{\chpar1←}
\def\ragged{\chpar8←} \def\disppen{\chpar9←}

\def\log{\mathop{\char'154\char'157\char'147}\limitswitch}
\def\lg{\mathop{\char'154\char'147}\limitswitch}
\def\ln{\mathop{\char'154\char'156}\limitswitch}
\def\lim{\mathop{\char'154\char'151\char'155}}
\def\limsup{\mathop{\overline{\char'154\char'151\char'155}}}
\def\liminf{\mathop{\\underline{char'154\char'151\char'155}}}
\def\sin{\mathop{\char'163\char'151\char'156}\limitswitch}
\def\cos{\mathop{\char'143\char'157\char'163}\limitswitch}
\def\tan{\mathop{\char'164\char'141\char'156}\limitswitch}
\def\cot{\mathop{\char'143\char'157\char'164}\limitswitch}
\def\sec{\mathop{\char'163\char'145\char'143}\limitswitch}
\def\csc{\mathop{\char'143\char'163\char'143}\limitswitch}
\def\max{\mathop{\char'155\char'141\char'170}}
\def\min{\mathop{\char'155\char'151\char'156}}
\def\sup{\mathop{\char'163\char'165\char'160}}
\def\inf{\mathop{\char'151\char'156\char'146}}
\def\det{\mathop{\char'144\char'145\char'164}}
\def\exp{\mathop{\char'145\char'170\char'160}\limitswitch}
\def\Pr{\mathop{\char'120\char'162}}
\def\gcd{\mathop{\char'147\char'143\char'144}}
\def\lcm{\mathop{\char'154\char'143\char'155}}

\def\ldots{{.\≥.\≥.}}
\def\cdots{{\char'401\≥\char'401\≥\char'401}}
\def\ldotss{{.\≥.\≥.\≥}}
\def\cdotss{\cdots\≥}
\def\ldotsm{{\≥.\≥.\≥.\≥}}
\def\vdots{\vbox{\baselineskip 4pt\vskip 6pt\hbox{.}\hbox{.}\hbox{.}}}

\def\leftset{\mathopen{\{\,}}
\def\rightset{\mathclose{\,\}}}

\def\neqv{\mathrel{\not≡}}

\def\%{\char'45 }	% Note, the space after 45 is needed!
\def\rtarr{→}

\def\choose{\comb()}

\def\roman#1{\mathop{\hbox{\rm #1}}}

\def\modop{\<\,\mathbin{\char'155\char'157\char'144}\penalty900\<\,}
\def\mod#1{\penalty0\;(\char'155\char'157\char'144\,\,#1)}

\def\qquad{\quad\quad}

\def\cpile#1{\vcenter{\baselineskip\widespacing\lineskip3pt
\halign{\hfill$## $\hfill\cr
\null\cr\noalign{\vskip-4.5pt}#1\noalign{\vskip 4.5pt\vskip-\widespacing}\null\cr}}}
\def\lpile#1{\vcenter{\baselineskip\widespacing\lineskip3pt
\halign{$## $\hfill\cr
\null\cr\noalign{\vskip-4.5pt}#1\noalign{\vskip 4.5pt\vskip-\widespacing}\null\cr}}}
\def\rpile#1{\vcenter{\baselineskip\widespacing\lineskip3pt
\halign{\hfill$## $\cr
\null\cr\noalign{\vskip-4.5pt}#1\noalign{\vskip 4.5pt\vskip-\widespacing}\null\cr}}}
\def\eqalign#1{\vcenter{\baselineskip\widespacing\lineskip3pt
\halign{\hfill$\dispstyle{##}$⊗$\dispstyle{\null##}$\hfill
\null\cr\noalign{\vskip-4.5pt}#1\noalign{\vskip 4.5pt\vskip-\widespacing}\null\cr}}}
\def\eqalignno#1{\vbox{\baselineskip\widespacing\lineskip3pt
   \tabskip 0pt plus 1000pt minus 1000pt
   \halign to size{\hfill$\dispstyle{##}$\tabskip 0pt
   ⊗$\dispstyle{\null##}$\hfill\tabskip 0 pt plus 1000pt minus 1000pt
   ⊗\hfill$ ##$\tabskip 0pt\cr#1}}}
\def\null{\hbox{}}
\def\twoline#1#2{\halign{\hbox to size{##}\cr\quad$\dispstyle{#1}$\hfill\cr
\noalign{\penalty 1000\vskip3pt}\hfill$\dispstyle{#2}$\quad\cr}}

\def\cut#1{\hbox{\lower 9pt
\null\vbox{\hbox{\lower100pt\hbox{\raise100pt
\hbox{$\dispstyle{#1}$}}}\vskip-100pt}}} % pretends that #1 is 9pt deep
\def\spose#1{\hbox to 0pt{\hskip 0pt minus 100pt #1 \hskip 0pt minus 10000000pt}}

\def\properties#1{\vbox{\halign{\hbox to 30pt{\hfill\rm## }⊗\!
\hbox to 296pt{\strut##\strut\hfill}\hskip 10pt\cr\noalign{\vskip-9pt}
#1\noalign{\vskip-9pt}}}}
\:@←cmathx \:a←cmr10 \:b←bsr10[fnt,dek] \:c←bsr8[fnt,dek]
\:d←cmr7   \:e←bsr6[fnt,dek]  \:f←cmr5 \:g←cmi10
\:h←bsi10[fnt,dek]   \:i←bsi8[fnt,dek]  \:j←cmi7 \:k←bsi6[fnt,dek]
\:l←cmi5  \:m←bscsc[fnt,dek] \:n←cms10          
\:p←cms8  \:q←cmb10          \:s←cmb8
           \:u←cmsy10 \:v←bssy10[fnt,dek]  \:w←bssy8[fnt,dek]
\:x←cmsy7  \:y←bssy6[fnt,dek] \:z←cmsy5
\:<←cmssb                       \:?←cmti10

\hsize 30pc \vsize 52pc \maxdepth 2pt \parindent 25pt \topbaseline 10pt
\def\widespacing{15pt}
\disppen 1000
\parskip 0pt plus 1 pt \lineskip 1pt
\topskip 24pt plus 6pt minus 10pt  \botskip 3pt plus 6pt
\def\sl{\it}
\def\tenpoint{\baselineskip 12pt \dispskip 12pt plus 3pt minus 9pt
	\dispaskip 0pt plus 3pt \dispbskip 7pt plus 3pt minus 4pt
	\def\rm{\:b} \def\bf{\:q} \def\nm{\:b}
	\def\it{\def\'{\:b\accent'16\:h}\def\`{\:b\accent'15\:h}\:h}
	\def\biglp{\mathopen{\vcenter{\hbox{\:@\char'0}}}}
	\def\bigrp{\mathclose{\vcenter{\hbox{\:@\char'1}}}}
	\def\bigv{\hskip 1.111pt\left|\vbox to 7pt{}\right.}
	\def\strut{\lower 3.5pt\vbox to 12pt{}}
	\def\9{\hskip 5pt}
	\mathrm bce \mathit hik \mathsy vwy \rm}
\def\eightpoint{\baselineskip 10pt \dispskip 10pt plus 3pt minus 7pt
	\dispaskip 0pt plus 3pt \dispbskip 5pt plus 3pt minus 2pt
	\def\rm{\:c} \def\bf{\:s} \def\nm{\:c}
	\def\it{\def\'{\:c\accent'16\:i}\def\`{\:c\accent'15\:i}\:i}
	\def\biglp{\mathopen{\hbox{\:b(}}}
	\def\bigrp{\mathclose{\hbox{\:b)}}}
	\def\bigv{\hbox{\:v\char'152}}
	\def\strut{\lower 3pt\vbox to 10pt{}}
	\def\9{\hskip 4pt}
	\mathrm cee \mathit ikk \mathsy wyy \rm}
\mathex @
\def\bigglp{\mathopen{\vcenter{\hbox{\:@\char'22}}}}
\def\biggrp{\mathclose{\vcenter{\hbox{\:@\char'23}}}}
\def\biggv{\hskip 1.111pt\left|\vbox to 12pt{}\right.}
\def\bigggv{\hskip 1.111pt\left|\vbox to 15pt{}\right.}
\def\biggglp{\mathopen{\vcenter{\hbox{\:@\char'40}}}}
\def\bigggrp{\mathclose{\vcenter{\hbox{\:@\char'41}}}}

\def\xskip{\hskip 7pt plus 3pt minus 4pt}
\def\yskip{\penalty-50\vskip 3pt plus 3pt minus 2pt}
\def\yyskip{\penalty-100\vskip 6pt plus 6pt minus 4pt}
\def\beginpaper{\gdef\tpage{T}\gdef\rauth{}\gdef\rtitle{}\gdef\theauthaddr{}
\gdef\iscommby{F}\gdef\thedaterecd{date unknown}\gdef\iskeywords{F}
\gdef\theabstract{}\eightpoint}

\def\title#1\par{\save1\ctrline{\:q\uppercase{#1\unskip}}}
\def\shorttitle#1\par{\gdef\rtitle{\:c\uppercase{#1\unskip}}}
\def\author#1\par{\save2\ctrline{\:c\uppercase{by #1\unskip}}\gdef\rauth
{\:c\uppercase{#1\unskip}}}
\def\shortauthor#1\par{}
\def\authaddr#1\par{\gdef\theauthaddr{\uppercase{#1}}}
\def\commby#1\par{\gdef\iscommby{T}\gdef\thecommby{#1\unskip}}
\def\daterecd#1\par{\gdef\thedaterecd{#1\unskip}}
\def\keywords#1\par{\gdef\iskeywords{T}
\botinsert{\hrule width 5pc \vskip 5pt
\hbox to size{\:cKeywords: #1\unskip.\hfill}}}
\def\AMSclass#1\par{\botinsert{\if T\iskeywords{}\else{\hrule width 5pc\vskip5pt}
\hbox to size{\:iAMS (MOS) subject classifications (1970).
\:c#1\unskip.\hfill}}}
\def\abstract#1\par{\gdef\theabstract{#1}}
\def\begintext{\null\vskip 24pt plus 12pt minus 12pt
\box1
\vskip 4pt plus 3pt minus 1pt
\box2
\vskip 4pt plus 3pt minus 1pt
\ctrline{\if T\iscommby{Communicated by \thecommby,}\else{Received}\
\thedaterecd}
\vskip 8pt plus 6pt minus 3pt
\tenpoint\theabstract\par}

\def\ref#1{[{\bf#1}]}
\def\thbegin #1. #2\par{\yyskip{\:m#1.}\xskip{\sl#2}\par\yyskip}
\def\proofbegin #1. {{\:m#1:}\xskip}
\def\QED{\quad\hbox{\rm Q.E.D.}\lower 8.5pt\null}
\def\defbegin #1. {{\:m#1.}\xskip}
\def\references{\penalty-100\vskip 6pt plus 3pt minus 1pt\chcode'43←12
\eightpoint\ctrline{BIBLIOGRAPHY}\penalty1000\vskip 6pt plus 3pt minus 1pt}

\def\refno #1. \au#2 #3\par{{\bf#1.}\xskip#2,
\gdef\ispaper{F}\gdef\isvol{F}\gdef\isissue{F}\gdef\isyear{F}\gdef\ispages{F}
\gdef\thebook{}\gdef\ispubl{F}\gdef\ispubladdr{F}\gdef\isMR{F}
#3\!
\if T\ispaper{{\it\thepaper}, \thebook\if T\isvol{\ \bf\thevol}\else{}
\if T\isyear{\ (\theyear)}\else{}
\if T\isissue{, \theissue}\else{}}
\else{\if F\isbook{---unknown type of reference---}\else{{\it\thebook}\!
\if T\isvol{\ {\bf\thevol}}\else{}
\if T\ispubl{, \thepubl}\else{}
\if T\ispubladdr{, \thepubladdr}\else{}
\ (\if T\isyear{\theyear}\else{year of publication unknown})}}
\if T\ispages{, \thepages}\else{}
\if T\isMR{.\xskip\theMR}\else{}.\par}

\def\paper#1 {\gdef\ispaper{T}\gdef\thepaper{#1}}
\def\jour#1 {\gdef\isjour{T}\gdef\thebook{#1}}
\def\vol#1 {\gdef\isvol{T}\gdef\thevol{#1}}
\def\issue#1 {\gdef\isissue{T}\gdef\theissue{#1}}
\def\year#1 {\gdef\isyear{T}\gdef\theyear{#1}}
\def\pages#1 {\gdef\ispages{T}\gdef\thepages{#1}}
\def\MR#1 {\gdef\isMR{T}{\MRS#1!}}
\chcode'43←12\chcode'26←6 % temporarily make ⊗ the parameter symbol instead of #
\def\MRS⊗1#⊗2!{\gdef\theMR{{\bf MR ⊗1 }$\#$⊗2}}\chcode'43←6\chcode'26←4
\def\sameauthor{\hbox{---\hskip-3pt---}}
\def\toappear{\if T\isyear{\gdef\ispages{T}\gdef\thepages{to appear}}
\else{\gdef\isyear{T}\gdef\theyear{to appear}}}
\def\book#1 {\gdef\isbook{T}\gdef\thebook{#1}}
\def\publ#1 {\gdef\ispubl{T}\gdef\thepubl{#1}}
\def\publaddr#1 {\gdef\ispubladdr{T}\gdef\thepubladdr{#1}}

\def\endpaper{\penalty1000\vskip 8pt plus 4pt minus 5pt
\noindent\theauthaddr\par\vfill\eject}
\output{\baselineskip 0pt\lineskip0pt	% beginning of output routine, resets skips
	\vbox to 56pc{         % prepare the full page of this fixed height
	\if T\tpage		% the next is used when tpage is "T" (title pages)
		{\gdef\tpage{F} % reset tpage
		\vbox to 24pt{	% journal name in place of headlines
		\baselineskip 8pt
		\hbox{\:c BULLETIN OF THE}
		\hbox{\:c AMERICAN MATHEMATICAL SOCIETY}
		\hbox{\:c Volume \cvol, Number \cvolno, \cmonth\ \cyear}
		\vfill}
		\page		% insert the page contents
		\vfill		 % extra space before the page number
		\rjustline{\:fCopyright \:z\char'175\ \:f\cyear,
		American Mathematical Society}
		\ctrline{\:c\count0}} % "drop folio", the page number in 8pt type
	\else{\baselineskip 12pt \hbox{} % empty line to position next baseline
		\hbox to size{\ifeven0{\:a\count0\hfill\rauth\hfill}
			\else{\hfill\rtitle\hfill\:a\count0}}
		\hbox{}	% empty line whose baseline is exactly 24pt from top
		\page\vfill}	% insert the page contents
	}			% completion of the \vbox
	\advcount0}		% increase page number by 1 and end output routine

\jpar 100
\setcount0 959
\def\cvol{82}
\def\cvolno{6}
\def\cmonth{November}
\def\cyear{1976}