I need do refactoring ugly equations.
\documentclass{article}
\usepackage{amsmath}
\begin{document}
$
\sum_{l=1}^{n}
\frac{x_{k}}{\left(\overset{n}{\underset{l=1}{\sum}}\vert
x_{l}\vert^{p}\right)^{\frac{1}{p}}}\
\frac{y_{k}}{\left(\overset{n}{\underset{l=1}{\sum}}\vert
y_{l}\vert^{q}\right)^{\frac{1}{q}}} \text{ } \leq
\overset{n}{\underset{l=1}{\sum}} \frac{x_{i}^{p}}{p
\sum_{j=1}^n (x_{i}^{p})^{\frac{1}{p} p}} + \frac{y_{i}}{(q
\sum_{j=1}^n y_{i}^{q})^{\frac{1}{q}q}}= \frac{1}{p} +
\frac{1}{q} = 1
$
\end{document}
What is your experience to create more flexibility TeX?
I consider using command
to underscore \sum
. What is your opinion about this solution?
\overset{n}{\underset{l=1}{\sum}
: How about\sum\limits_{l=1}^n
? – Henri Menke Sep 20 '19 at 21:34