1

I am a beginner in LaTeX and I have a problem when making a list of greek letters. This is the code down below.

\begin{itemize}
    \item \kappa
    \item \iota 
    \item \lambda
\end{itemize}

The error message says:

! Missing $ inserted.
<inserted text> 
                $
l.242   \item \kappa
  • 1
    Welcome to TeX SX! You also can load \usepackage[utf8]{inputenc}\usepackage[LGR,T1]{fontenc} and typeset the real Greek etters from your keyboard, like this κ, ι, λ, or even compile with xelatex and load fontspec. – Bernard Jun 6 '18 at 17:48
1

Greek letters are supposed to appear in math-mode only. Surround the greek letters with \(...\):

\documentclass{article}

\usepackage{amsmath}

\begin{document}

\begin{itemize}
    \item \(\kappa\)
    \item \(\iota\)
    \item \(\lambda\)
\end{itemize}

\end{document}

The ! Missing $ inserted. means, in a more wordy version: "A command that requires math-mode was found outside math-mode. I inserted a $ to try to fix things."

(Surrounding with $...$ is the TeX equivalent of surrounding with \(...\)).

3

If you want to typeset Greek letters in text mode, I suggest you load the textgreek package and type \textalpha, \textbeta, etc.

enter image description here

\documentclass{article}
\usepackage{textgreek}
\begin{document}
\begin{itemize}
\item \textalpha
\item \textbeta
\item \textgamma
\item \textdelta
\item \dots
\item \textpsi
\item \textomega
\end{itemize}
\end{document}

Of course, there's also \textAlpha, \textBeta, ..., \textPsi, and \textOmega.

1

I cannot comment to @Phelipe Oleinik, so here an addition:

If you need the upright greek letters in math environment use the package upgreek.

$\upalpha$
$\upbeta$

produce the lowercase greek letters while

$\Upalpha$
$\Upbeta$

produce the upright case letters. Further reading is within the documentation of upgreek.

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