documentclass[10pt,a4j]{article}

defVec#1{mbox{boldmath $#1$}} usepackage[dvipdfmx]{graphicx}

setlength{textheight}{275mm} headheight 5mm topmargin -20mm textwidth 160mm textheight 250mm oddsidemargin -0mm evensidemargin -5mm

pagestyle{empty} makeatletter

\def\@maketitle{%
\newpage\null
\vskip 2em%
\begin{center}%
\let\footnote\thanks
  {\large\bf \@title \par}%
  \vskip 1.5em%
  {\large\bf \@author \par}%
  \vskip 1.5em%
  {\small \@date}%
\end{center}%

} makeatother

%documentclass[10pt, a4j]{article} %%usepackage{citesort} usepackage{amssymb} usepackage[dvipdfmx]{graphicx}% 図を入れるときに使用 usepackage{wrapfig}% 図の周りに本文を流し込みたいときに使用 usepackage{subfigure} usepackage{here}