2

This question already has an answer here:

I want to represent the following sum in LaTeX.

enter image description here

I have tried it in the following way:

$$\sum_{{1 \le k \le n}_{ k odd}} k^2$$

But I have not got the desired result. Please help me.

marked as duplicate by Mico math-mode Apr 4 '18 at 15:25

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

4

You need to load the amsmath package and employ its \substack directive.

enter image description here

\documentclass{article}
\usepackage{amsmath}
\usepackage{newpxtext}             % Palatino text font
\usepackage[euler-digits]{eulervm} % Euler math font

\begin{document}
\[
\sum_{\substack{1 \le k < 100 \\ \textup{$k$ odd}}} k^2
\]
\end{document}
  • @barbarabeeton - Thanks for this. I changed \text to \textup. (We don't know if the default text font is sans-serif -- in which case "odd" would look, well, odd, if it were typed in the roman font face...) – Mico Apr 4 '18 at 15:28
  • What is \usepackage[euler-digits]? – Sebastiano Apr 4 '18 at 21:23
  • @Sebastiano - euler-digits is an option passed to the package eulervm. I included the font-related directives in order to replicate the "look" of the OP's screenshot. – Mico Apr 4 '18 at 21:43

Not the answer you're looking for? Browse other questions tagged or ask your own question.