TITLE: English word for a "pavé" in French
QUESTION [5 upvotes]: In French, a subset $P \subseteq \mathbb R^n$ that can be written as the product of $n$ finite open intervals is called a "pavé".
Is there a word in English to designate such an object?

REPLY [4 votes]: In Rudin's Principles of Mathematical Analysis, the term "$k$-cell" is used for the product of $k$ closed intervals.  This appears to be standard enough in English mathematics that it is the title of the relevant Wikipedia article.