Arithmetic
... that Arithmetic was the first mathematics text book written in the Russian language?
... that <i id="mwBZw"><b id="mwBZ0"><a href="./Arithmetic_(book)" id="mwBZ4" rel="mw:WikiLink" title="Arithmetic (book)">Arithmetic</a></b></i> was the first mathematics text book written in the <a href="./Russian_language" id="mwBZ8" rel="mw:WikiLink" title="Russian language">Russian language</a>?