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How to represent this upper triangular matrix? Upper triangular matrix

1 Answer 1

4

I'm not sure which part of the matrix was giving you trouble, but here's a sample:

\documentclass{amsart}

\DeclareMathOperator{\Var}{Var}
\DeclareMathOperator{\Cov}{Cov}

\begin{document}

\[
 \Var(\epsilon) =
 \begin{bmatrix}
  \Var(\epsilon_1) & \cdots & \cdots & \cdots & \Cov(\epsilon_1,\epsilon_p) \\
  & \Var(\epsilon_2) & \cdots & \cdots & \Cov(\epsilon_2,\epsilon_p) \\
  & \ddots & \cdots & \cdots & \vdots \\
  & & \ddots & \cdots & \vdots \\
  & & & \ddots & \vdots \\
  & & & & \Var(\epsilon_p)
 \end{bmatrix}
 = \Omega_{(np\times np)}.
\]

\end{document}

Notice that I've made Var and Cov into operators, which affects how they're typeset. The output:

sample output

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