3

enter image description here

I try the \boldsymbol{\times}, but it doesn't look right.

3

It is bit heavy, but highly customizable.... using tikz:

\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{shapes.misc}
\newcommand{\mytimes}{ \tikz[baseline=-.55ex] \node [inner sep=0pt,cross out,draw,line width=1pt,minimum size=1ex] (a) {};}
\begin{document}
  \[\begin{bmatrix}
    \times    & \mytimes \\
    \mytimes  & \times
  \end{bmatrix}
  \]
\end{document}

enter image description here

Here is one with bm:

\documentclass{article}
\usepackage{amsmath}
\usepackage{bm}
\begin{document}
  \[\begin{bmatrix}
    \times    & \bm{\times} \\
    \bm{\times}  & \times
  \end{bmatrix}
  \]
\end{document}

enter image description here

  • The first solution looks very good. Thank you very much. – Yulong Ao Oct 12 '14 at 4:37
  • The first solution looks very good. Thank you very much. – Yulong Ao Oct 12 '14 at 4:38

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.