Mathematical English: Series

math-seriesHere are two common mistakes related to series.

1) A series is called a series but not a row (a false friend related to the German word Reihe).

2) A function is expanded in (or as) a series. German native speakers often make the mistake of saying “to develop [a function] in a series” (the corresponding German expression is “[eine Funktion] in eine Reihe entwickeln“).

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