# Tagged Questions

Questions on the pronunciation of mathematical terms and notation.

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### Is there a definitive guide to speaking mathematics?

Is there a definitive guide to speaking mathematics to avoid ambiguity? I'm writing a program to generate text for a variety of mathematical expressions and would like to code it so that it adheres ...
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### How is $e^x$ read aloud?

My current research colleague from New Castle told me that I was reading it wrong. I usually read it as e power x. How do you read aloud $e ^ x$? Is it: e raised to x e power x e powered x or e ...
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### How to read letters such as $\mathbb A$, $\mathbb B$, etc., or $\mathfrak A$, $\mathfrak B$, etc.?

This is a soft question. We can read the letters $\bf A$, $\bf B$, etc. as bold A, bold B, etc. We can read the letters $\textit{A}$, $\textit{B}$, etc. as italic A, italic B, etc. We can read the ...
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### How do you pronounce the inverse of the $\in$ relation? How do you say $G\ni x$?

If I am talking about sets $G$ and $H$ and I want to say in words that $G\subset H$, I, like everyone else, will say that $G$ is contained in $H$, or that $H$ contains $G$. But if I am talking about ...
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### pronunciation of sinh x, cosh x, tanh x for short [closed]

I heard teachers say [cosh x] instead of saying "hyperbolic cosine of x". I also heard [sinch x] for "hyperboic sine of x". Is this correct? How would you pronounce tanh x? Instead of saying "...
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### How do you read “$a_n$” in English?

What is the correct way to read "$a_n$" in English? What is the translation of what in Spanish is "$a$ sub $n$"?
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### How do you pronounce (partial) derivatives? [closed]

I am not an English speaker that is why I asked this question. In addition, I think english.stackexchange.com is not the proper place to ask this because (I am so sorry) I don't think most of them ...
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### How do you pronounce $\Sigma^+$ or $\Sigma^\dagger$ (as used in Moore–Penrose pseudoinverse)?

I'm referring to the pronunciation of the $+$ and $\dagger$ notations. Is it simply pronounced as ‘sigma plus’, or ‘pseudoinverse of sigma’, or ‘sigma pseudoinversed/pseudoinverted’? Sometimes it is ...
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### how do you read: “$\lim (n-1)/(n-2) = 1$”

The limit of the fraction $(n-1)/(n-2)$ with $n$ approaching $+\infty$ is $1$. But how do you read that, concisely? (say during chalking the formula on a blackboard). Is it acceptable to say "lim", ...
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### How is “Hessian” pronounced? [closed]

How do mathematicians pronounce "Hessian"? From searching online I've learned that the term is named after Otto Hesse, a German, and that the German state of Hesse has lent its name to a boot. From ...
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### How to verbalize $R[x]$? [closed]

Let $R$ be a ring, and let $x$ be an indeterminate. Let $R[x]$ denote the ring of polynomials in $x$ with co-efficients in $R$. How to most efficiently read (i.e. pronounce) the symbol $R[x]$ while ...
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### How to say the notation $x_{i,j}^{ k}$ [closed]

$x_{i,j}^{ k}$ May I say the following to say the above notation? x sub i j to k ? x sub i j sup(prounced like "soup") k ? (Can I say "soup" for "superscript"? Could you please show me a ...
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### Pronunciation of Indexed Collection of Sets

I'm currently learning about sets and I want to discuss the material. However, I'm unsure of the pronunciation of certain symbols. For instance, I know that (1) $A\cup B$ is read, "A union B." (...
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### How to read multiplication, division, and power?

please understanding my poor English. I heard from some video lectures, $x^2$ is $x$ squared, and $x^3$ is $x$ cubed. Could someone let me know how to read $x^n$? $x$ to the n? $x$ to the n ...
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### How do you pronounce $\hat{n}$?

I've found a symbol $\hat{n}$ in an equation, and I have no idea how to pronounce it, and how to write it phonetic. Edit: I've found it here: https://en.wikipedia.org/wiki/Quaternion#Exponential....
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### How do you pronounce x' and x''? [closed]

I am giving a presentation tonight, and the mathematical terms x' and x'' feature heavily in it. I pronounce them as "x-dash" and "x-dash-dash", but this gets a bit tiresome by the end of the ...
### How to pronounce $\chi^2$? [closed]
When talking about the $\chi^2$-test or the $\chi^2$-distribution, my colleagues have different pronunciations of the letter $\chi$. How should it be pronounced? I quickly found three different ways: ...