\begin{tabular}[t]{cc|c}
$p_0$ & $p_1$ & $p_0 \rightarrow p_1$ \\
0 & 0 & 1 \\
0 & 1 & 1 \\
1 & 0 & 0 \\
1 & 1 & 1
\end{tabular}

math-mode matrix:

 \begin{matrix}
  a & b & c \\
  d & e & f \\
  g & h & i
 \end{matrix}

matrix with delimiters: (pmatrix) [bmatrix] {Bmatrix} |vmatrix| ||Vmatrix||