Problem:
Find the $\ell_\infty$ norm of the following vector:
$\left(
\begin{array}{c}
 6 \\
 \frac{19}{4} \\
 \frac{1}{4} \\
 -7 \\
\end{array}
\right)$.
Answer:
$7$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/lp_norm/11436.txt'}