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).
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).