# Questions tagged [pronunciation]

Questions on the pronunciation of mathematical terms and notation.

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### pronunciation problem [closed]

what is the phonetic spelling of ''Joukowski Airfoil'' Is there a dictionary to find the true pronunciation of such names?
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### How do you read set union and intersection notation?

How do you read $$A \bigcup B$$ "The union of A and B" (starting with the operator) is unintuitive ("x plus y" is more intuitive and shorter than "the addition of x and y&...
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### Pronunciation of multivariable function $f(x,y,z)$.
Can someone tell me how is $f(x,y)$ and $f(x,y,z)$ is pronounced? Is $f(x,y)$ read as f of x and y? Is $f(x,y,z)$ said as f of x, y, and z? Thank you.
Is there a common way to pronounce the expression $!n$ for the number of derangements of $n$ objects, other than "The number of derangements of $n$ objects?" Something like "factorial $... 4 votes 2 answers 168 views ### How do you pronounce$\tilde{R}$? I found$\tilde{R}$in a mathematical text, and I would like to know how this is pronounced. I tried to search on the internet but was not able to find anything related. 1 vote 1 answer 82 views ### How do you read aloud a probability notation in English? [closed] I'm learning probability and I'm trying to "translate" one line from mathematical notation to English. It's the definition of a random variable: $$\textbf{X}^{-1}(-\infty,x)=\{w\in\Omega;\... 0 votes 0 answers 74 views ### How to pronounce \breve{E}? How to pronounce \breve{E} ? The TeX command for it is "\breve{E}" , but I don't know if it would be correct to say "E breve" during a presentation. 0 votes 0 answers 127 views ### How is "X with tilde on top" pronounced when spoken? How is \tilde{X} pronounced when a paper is being read out loud? Sorry if this is a duplicate but couldn't figure out how to search for it. TIA 0 votes 1 answer 123 views ### How do you read an expression such as e^{-rt} I heard people say that the exponential to the power of R times T e^{rt} Is it normal? What about other similar things? e^{-rt} Is it read ... 4 votes 3 answers 130 views ### How to read x^n-1 and x^{n-1}? Now, it may sound absurd, but I would like to know (if exists), how to read (x^{n-1}) and (x^n-1) distinctly and practice this it in everyday Mathematics. As of now, I read (x^{n-1}) as, "x ... 1 vote 2 answers 90 views ### How do you read |a+b| \le |a|+|b|? How do you read |a+b| \le |a|+|b|? We have a lesson in mathematical language and sentences. This one is the hardest to answer. 0 votes 1 answer 235 views ### How is an ordered pair (a,b) actually read aloud? An ordered tuple? I know what an ordered tuple (e.g. ordered pair) is. I'm not wondering for any reason in particular, but I couldn't find anything on the internet. The question is the title. I'm usually one to try and ... 1 vote 1 answer 83 views ### Pronunciation of HOMFLY polynomial How should HOMFLY polynomial be pronounced? It is an acronym, but clearly chosen so that it could be pronounced as a word. 2 votes 0 answers 113 views ### Pronouncing the symbol ! as understood as a morphism in category theory. How does one pronounce the symbol ! as a morphism in category theory? I heard it spoken as, "shriek" here, but I don't know whether that's the convention or not. In my opinion, "exclamation mark" ... 0 votes 1 answer 55 views ### English pronunciation of semi colon in probabilities In English, I believe the notation p(x, z \mid \theta) is pronounced something like; pee-of-ex-zee-given-theta But I sometimes see a semicolon used, as in p(x, z \,; \theta), which I believe ... 3 votes 2 answers 57 views ### How do you pronounce \mathbb{F}_2, \mathbb{F}_2^n, \mathbb{N}^k, [n] = \{1,\ldots,n\}, and S \subseteq [n]? How do you pronounce \mathbb{F}_2, \mathbb{F}_2^n, \mathbb{N}^k, [n] = \{1,\ldots,n\}, and S \subseteq [n] when you're reading a text? I've just started reading more advanced math textbooks and ... 2 votes 0 answers 66 views ### Subgroups of the Torsion Subgroup of an Elliptic Curve A silly question. I am working through Silverman and Tate, Rational Points on Elliptic Curves Let E be an elliptic curve given by a Weierstrass equation$$E:y^2=x^3+ax^2+bx+c, \quad a,b,c \in \... 3 votes 1 answer 156 views ### Italian pronunciation of the symbol$dx$I am afraid this question is going to be rather specific and perhaps off-topic, but I hope some of the Italian users (at least) can help me out with this curiosity. I have always been used to the ... 2 votes 1 answer 119 views ### How to pronounce$C^\infty$? I am thinking "C-infinite" or "infinitely differentiable". The second one is absolutely correct, but too long for colloquial use. I'd prefer the first one if possible. Is it correct or common? 2 votes 1 answer 285 views ### How to pronounce "$\mapsto$", as in "$x\mapsto f(x)$"? [duplicate] Lots of symbols have their pronunciations. For instance, "$\tbinom {n}{k}$" is pronounced "$n$choose$k$", and "$\forall$" is pronounced "for all". The symbol ... 3 votes 1 answer 144 views ### How to pronounce$\Sigma_1$? I have to give a presentation and part of it involves talking about the recursively enumerable sets. However, some of the theorems I am quoting (like Rosser's proof of Godel's first incompleteness ... 2 votes 1 answer 90 views ### How do you pronounce$\check{n}$? I did search the internet but could not find a source mentioning the pronunciation of the mathematical symbol$\mathbf{\check{}}$as in$\check{n}$. How do you pronounce it? 8 votes 3 answers 997 views ### What is the generally accepted pronunciation of “topoi”? Apologies if this annoys proponents of “toposes “. It appears to me that there are three main candidates for pronunciation, all focusing on the last syllable: Top-oy (rhyming with “toy” in British ... 1 vote 2 answers 99 views ### How to verbalise ':' in a definition? When I write a definition, e.g. Let$f : \mathbb{R} \rightarrow \mathbb{R}$How does one pronounce the colon ':' symbol? I would naively guess 'Let f be-a-function-mapping from the reals to the ... 4 votes 1 answer 262 views ### How to read the expression of an affine connection:$\nabla_X Y$? I am studying Riemannian Geometry from the textbook Riemannian Geometry by do Carmo (English edition). In section 2 of chapter 2, page 50, he defines an affine connection as follows: 2.1 Definition.... 0 votes 0 answers 63 views ### The correct spelling of the space$L^4$Good morning everybody, It is well-known that the space of$L^{2}$function is called: "the space of square integrable functions" What about the space of$L^{4}$functions? can we say "the space of ... 0 votes 1 answer 89 views ### How to pronounce the notation$\lim\limits_{x \to a^+} F(x, y) = F(a^+, y) = F(a, y)$Related: How does the notation of limits read in plain English? How does the following notation read in plain English: I can't interpret it myself. $$\lim\limits_{x \to a^+} F(x, y) = F(a^+, y) = F(... 0 votes 2 answers 341 views ### How to pronounce the notation \lim\limits_{x \to \infty \\ y \to \infty} F(x, y) = 1 How does the following notation read in plain English:$$\lim\limits_{x \to \infty \\ y \to \infty} F(x, y) = 1$$As far as I can read: If x and y approaches \infty, the value of ... 4 votes 1 answer 146 views ### How to pronounce "equicontinuous"? I couldn't find the word equicontinuous in the dictionary, so I hope this is the right place to ask. The definition can be found in the wikipedia: https://en.wikipedia.org/wiki/Equicontinuity If I ... 2 votes 1 answer 88 views ### How to pronounce this notation Reading this paper : https://arxiv.org/pdf/1608.04644.pdf the following term :$$L_\infty$$is referenced in the context of : How is L_\infty pronounced ? Is it just "L infinity" ? 0 votes 1 answer 129 views ### How to pronounce of 0^+ and 0^-? I'm not an English native speaker and I don't know how to pronounce 0^+ and 0^-. Could you help me, please? I'm referring to the symbols that appear for example in the limits lim_{x\to 0^+}f(x)... 0 votes 0 answers 1k views ### How do you pronounce \frac{dy}{dx}? Just out of curiosity... I always say "dee-why dee-ex" Some people say "dee-why by dee-ex" (especially many of my maths lecturers) Others say "dee-why on/over dee-ex" I've noticed that most of my ... 6 votes 2 answers 2k views ### How to pronounce \mathcal{E}? How to say \mathcal{E} when we are speaking about mathematics? Can I call it "curly E"? And also how to pronounce \mathcal{A} and \mathcal{B} and \mathcal{P} and so on? 0 votes 1 answer 171 views ### Need help with notation - Supremum I'm reading a paper, 'Invariant Scattering Convolution Networks'. Equation 2, page 2 reads as follows; I'm not familiar with the \underset{u}{sup} notation - does this refer to the support of the ... 2 votes 0 answers 72 views ### Pronunciation of \in-minimal How do I pronounce \in-minimal? I need to know it to see whether I should write "X has a \in-minimal element" or "X has an \in-minimal element". 1 vote 1 answer 11k views ### How to pronounce "L'Hospital"? [closed] How to pronounce "L'Hospital"? Some people pronounce like "lapital". When I was in 12th standard, some teachers used to pronounce "lapital" and some used to pronounce "L hospital". 0 votes 1 answer 90 views ### How to read \textbf{A}^{op} in category theory? Simple question, how does one pronounce the name of the category \textbf{A}^{op}, defined as the dual of the category \textbf{A}? Reading it, I want to say \textit{ay-opp} /eɪ-ɑp/. 34 votes 17 answers 19k views ### How is \ln pronounced by English speakers? I have always heard an expression like \ln (x^2) pronounced aloud as "ell-enn ex squared". That is, the name of the function \ln is read aloud as a two-letter abbreviation. However, I recently ... 1 vote 1 answer 907 views ### Pronunciation of Limacon I have a presentation on common polar graphs. one of them is the graph of b+a\cos{\theta}, or a limacon. however, i'm not sure as to whether it's pronounced -lih-muh-son -lih-muh-con -lie-ma-... 0 votes 1 answer 201 views ### Pronunciation of variable with subindex This question is about pronunciation of variables with a subindex such as P_i. In this Stanford video lecture on statistical mechanics P_i is pronounced " Pees of i" and E_i is pronounced "Ees ... 1 vote 3 answers 211 views ### How to pronounce \circledcirc (an infinitesimal)? I'm reading a paper in which \circledcirc is used to mean an infinitesimal (from nonstandard analysis). So, for example, you would have 0<\circledcirc^2<\circledcirc. I'm wondering how to ... 2 votes 1 answer 216 views ### \operatorname{Spec}(A) is called "the (prime) spectrum of A". What is \operatorname{Proj}(A) called? Modern algebraic geometry makes heavy use of two constructions that turn rings into schemes: Spec and Proj. The first construction turns a commutative ring A into a scheme \operatorname{Spec}(A), ... 5 votes 1 answer 574 views ### How to say (pronounce) \partial in the context of homology? I am curious what is the common way to say (in English contexts) the name of \partial (the boundary homomorphism) in homology theory. I.e. when giving a talk / speaking. The boundary homomorphism ... 4 votes 1 answer 568 views ### Correct pronunciation of \in. I was curious whether there is a standard reference for the correct English pronunciation of general mathematical symbols. In particular, I am wondering how to pronounce the symbol "\in" correctly, ... 8 votes 4 answers 988 views ### How to say \sin^2(x) in English What's the official way to say \sin^2(x)? Is it "sin squared of x" or "sin of x, pause, squared"? 1 vote 0 answers 98 views ### How do you pronounce the expression (i|i)? I'm writing a library for translating latex into readable speech, and usually I rely on Larry's speakeasy to let me know how to read an equation. Seeing as I could not find an answer for the ... 2 votes 1 answer 44 views ### proper way to say this theorem out loud how do you say this theorem? My attempt: Let S be a Topological space, and let T-naught and the sets indexed by w be connected subsets of S. Assume T-naught and the sets indexed by w are not disjoint ... 1 vote 1 answer 128 views ### How to read partial ordering in a set? Let X be a partially ordered set with partial order \preceq. Then how can we read x\preceq y. Is it x less than or equal l to y.? 16 votes 2 answers 2k views ### How to pronounce " a:b=c:d" in English? I just realized that I have never used something as simple as proportions in spoken English so far, but today I have to. So simple question for native speakers: How do you pronounce for example$$ a:b=... 4 votes 2 answers 204 views ### 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." (... 