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I've been starting some vector calculus and I keep pronouncing it "R squared" in my head, which is clearly wrong. What is a better way to pronounce it, so that I can state things like $f: \mathbb{R} \rightarrow \mathbb{R}^2$ out loud?

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closed as primarily opinion-based by Najib Idrissi, RE60K, Robert Cardona, Daniel Fischer Mar 9 '15 at 14:35

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ R-2, R-3, ..., R-n (so read it as if there were no superscript there). $\endgroup$ – beep-boop May 7 '14 at 12:53
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    $\begingroup$ Completely disjoint comment: You probably want $\to$ instead of $\mapsto$. $\endgroup$ – fuglede May 7 '14 at 12:53
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    $\begingroup$ I say "R n", since in italian we say "Erre enne". $\endgroup$ – Siminore May 7 '14 at 12:55
  • $\begingroup$ @fuglede thanks, changed it. $\endgroup$ – porglezomp May 7 '14 at 12:59
  • $\begingroup$ Would you just pronounce all of those as "ar?" $\endgroup$ – porglezomp May 7 '14 at 13:01
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Actually, "$\mathbb{R}$-squared" is fine.

To see this, imagine you have a set $X$ with $n \in \mathbb{N}$ elements. How many elements does $X^2$ have? You guessed it, it has $n^2$ elements.

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