Clarifications about using Greek

Question

This helps, but not entirely.

https://tex.stackexchange.com/questions/69901/how-to-typeset-greek-letters

Package greek-fontenc Error: character �\GenericError {(inputenc) }{Package inputenc Error: Invalid UTF-8 byte "91}

MWE

\usepackage[T1,T2A,LGR]{fontenc}
\usepackage[utf8]{inputenc}\usepackage[polutonikogreek,latin,english,german,french,dutch,italian,spanish,russian]{babel}

\begin{document}

\begin{otherlanguage}{polutonikogreek}(Εὐχολόγιον τὸ μέγα σὺν ϑεῷ ἁγίῳ)\end{otherlanguage} 1873 – большой, и \begin{otherlanguage}{latin}Liturgia Graeca\end{otherlanguage} \begin{otherlanguage}{polutonikogreek}(Μικρὸν εΰχολόγιον σὺν ϑεῷ ἁγίῳ)\end{otherlanguage} 1872 - малый. Который для Вас предпочтительнее?

\end{document}

Unless you need to submit to a site that only uses PDFTeX, it’s so much simpler to use fontspec and Unicode. — Davislor, Aug 28 '19 at 19:34

score 3 · Accepted Answer · answered Aug 28 '19 at 19:16

You're using ϑ (U+0391 GREEK SYMBOL THETA) instead of θ (U+03B8 GREEK SMALL LETTER THETA).

Add an equivalence for the symbol (or use the letter). Using U+0391 won't get you the “open theta”; the glyph depends on the font.

\documentclass{article}
\usepackage[T1,T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[polutonikogreek,latin,english,german,french,dutch,italian,spanish,russian]{babel}

\DeclareUnicodeCharacter{03D1}{\texttheta}

\begin{document}

\begin{otherlanguage}{polutonikogreek}(Εὐχολόγιον τὸ μέγα σὺν ϑεῷ ἁγίῳ)\end{otherlanguage} 
1873 – большой, и \begin{otherlanguage}{latin}Liturgia Graeca\end{otherlanguage} 
\begin{otherlanguage}{polutonikogreek}(Μικρὸν εΰχολόγιον σὺν ϑεῷ ἁγίῳ)\end{otherlanguage} 
1872 - малый. Который для Вас предпочтительнее?

\end{document}

Clarifications about using Greek

1 Answers1