R0BTW3
Written on June 24, 2019
\[ I_n = \left(
\begin{array}{c|ccc}
1 &0& \cdots & 0 \\
\hline
0 & & & \\
\vdots& & I_{n-1}& \\
0 & & &
\end{array}
\right)
\]
Exemples du livre
\[ I_n = \left(
\begin{array}{c|ccc}
1 &0& \cdots & 0 \\
\hline
0 & & & \\
\vdots& & I_{n-1}& \\
0 & & &
\end{array}
\right)
\]