[Tex/LaTex] How to make theta symbol

symbols

I try to write (x,y,\theta) but I get an error that says, "Missing $ inserted". If I remove \theta the error disappears. What is wrong?

Best Answer

\theta is defined in math mode which is why TeX makes the announcement $ inserted. If what you type is indeed a formula, surround it with $:

$(x, y, \theta)$

If it is normal text, the correct input depends a bit on whether you use (normal) (La)TeX or e.g. XeLaTeX (or other compiler that understands unicode input). XeLaTeX allows for direct Unicode input and does not need \theta.

Related Solutions

[Tex/LaTex] Insert unicode symbol

You should separate input and output. If you want to print a symbol you at first need a font which contains it. If you want to use normal latex (it will work with xelatex too) you can e.g. use the dingbat font to get an anchor. If you want to use the symbol in the input you must declare it (I'm not sure if the ⚓ copy& paste correctly):

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\DeclareUnicodeCharacter{2693}{\anchor}
\usepackage{dingbat}
\begin{document}
\anchor ⚓ 
\end{document}

With xetex you can use e.g. dejavu sans (if you get the wrong glyph:make sure that you have only version of dejavu sans). Here too you can use commands/other notation if you don't want to use the symbol in the input:

\documentclass[12pt]{article}
\usepackage{fontspec}
\begin{document}
{\fontspec{DejaVu Sans Condensed} ^^^^2693 \char"2693 ⚓}
\end{document}

[Tex/LaTex] How is the philosophy conclusion symbol drawn

It is good practice to wrap your wrap the \vdash into a command. That way you can change the command once in the preamble (say you suddenly need it bold, or larger, or whatever) and it will be changed everywhere in the document. E.g.,

\documentclass{article}
\newcommand{\concl}{\ensuremath{\vdash}}
\begin{document}
\begin{itemize}
\item [P1] first premise
\item [P2] second premise
\item [\concl] conclusion 
\end{itemize}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Insert unicode symbol

[Tex/LaTex] How is the philosophy conclusion symbol drawn

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