How do I write "amartia" in polytonic Greek

Question

I want $\alpha\mu\alpha\rho\tau\iota\alpha$ with accent aigu ' above the $\iota$. How?

Answer 1

Load babel for polytonic Greek. Depending on your preferences, you can use the transliteration or direct input.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[greek.polutoniko,english]{babel}

\begin{document}

\textgreek{<amart'ia}

\textgreek{ἁμαρτία}

\end{document}

Answer 2

You could load any font which supports these letters with help of the package fontspec (which requires Lua- or XeLaTeX):

% arara: lualatex

\documentclass{article}
\usepackage{fontspec}    

\begin{document}
    \setmainfont{EB Garamond}
    ἁμαρτία

    \setmainfont{Linux Libertine O}
    ἁμαρτία
\end{document} 

---

If you do not want to type the letters (or can't), you may define macros with their unicodes:

\documentclass{article}
\usepackage{fontspec}    

\begin{document}
    \setmainfont{Linux Libertine O}
    \symbol{"03B1}%
    \symbol{"03AC}%
    \symbol{"1F00}\symbol{"1F01}\symbol{"1F02}\symbol{"1F03}\symbol{"1F04}\symbol{"1F05}\symbol{"1F06}\symbol{"1F07}%
    \symbol{"1F70}\symbol{"1F71}%

    \symbol{"1F80}\symbol{"1F81}\symbol{"1F82}\symbol{"1F83}\symbol{"1F84}\symbol{"1F85}\symbol{"1F86}\symbol{"1F87}%
    \symbol{"1FB0}\symbol{"1FB1}\symbol{"1FB2}\symbol{"1FB3}\symbol{"1FB4}\symbol{"1FB6}\symbol{"1FB7}
\end{document} 

---

Just for fun:

\documentclass{article}
\usepackage{fontspec} 
\setmainfont{EB Garamond}   
\usepackage{verse}

\begin{document}
\settowidth{\versewidth}{καὶ μὴ εἰσενέγκῃς ἡμᾶς εἰς πειρασμόν, ἀλλὰ ῥῦσαι ἡμᾶς ἀπὸ τοῦ πονηροῦ.}
\begin{verse}[\versewidth]
Πάτερ ἡμῶν ὁ ἐν τοῖς οὐρανοῖς· ἁγιασθήτω τὸ ὄνομά σου·\\
ἐλθέτω ἡ βασιλεία σου·\\
γενηθήτω τὸ θέλημά σου, ὡς ἐν οὐρανῷ, καὶ ἐπὶ τῆς γῆς·\\
τὸν ἄρτον ἡμῶν τὸν ἐπιούσιον δὸς ἡμῖν σήμερον·\\
καὶ ἄφες ἡμῖν τὰ ὀφειλήματα ἡμῶν,\\
ὡς καὶ ἡμεῖς ἀφίεμεν τοῖς ὀφειλέταις ἡμῶν·\\
καὶ μὴ εἰσενέγκῃς ἡμᾶς εἰς πειρασμόν, ἀλλὰ ῥῦσαι ἡμᾶς ἀπὸ τοῦ πονηροῦ.\\
Ἀμήν.\\
\end{verse} 
\end{document}