# Tagged Questions

This tag is for questions about the usage and meaning of mathematical terminology and the names for mathematical entities in English.

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### Describe a mathematical problem

How can I make the bold part of this sentence less awful? The symbolic regression problem is the problem of finding a closed form that models... You can move around the second part of the ...
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### Diversify the preposition “by” in “model X by smth.”

Which prepositions can be used with the verb "model" when speaking about something being an abstract description of something else? As an example, let us consider the following sentences: The ...
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### Plural for math notations

I have a question about the usage of plural in mathematics in the following context. Suppose we have functions \$f_1, f_2, \cdots\$. Which sentences is collect (if any)? Among the functions \$f_i\$...
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### In mathematics: is “associate to” correct? [closed]

In mathematical writing, I was used to We associate to the object C a vector space V(C) Now I found a question, Acceptable uses for "associated with" or "associated to", ...
596 views

### How to pronounce “×” in “12 × 3 mm²”? [closed]

I have this expression: 12 × 3 mm². I guess that it should not be pronounced as "twelve multiplied by three millimeters squared". I've tried to google it already but it seemed to be difficult ...
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### What do you call a pair of diagonally-opposite points on a square or rectangle, relative to the other pair of points?

Suppose there is a rectangle with corners N,E,S,W, names assigned in a clockwise fashion, as you might expect. N and S are diametrically opposite, as are E and W. Is there a term that describes ...
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### List of inverted letters and their applications

Upside-down letters, as in ∀, and left-side-right letters, as in ∃, are used in mathematics and logic to indicate for all and there exists. Do you know other examples of such inversions ...
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### Which verb to use with “The variable [verb] a value”?

Consider the mathematical expression x=5. What would be the correct sentence? The variable x is the value 5. The variable x has the value 5. The variable x takes the value 5. [Slightly ...
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### Word for equivalence preserving transformations of equations

I am searching for a mathematical term describing an algebraic manipulation of an equation which preserves equivalence. So while adding 2 to both sides of an equation results in an equivalent equation,...
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### Word for when set A is not a subset or superset of set B [closed]

I'm looking for a word to describe the relationship between two sets when set A is neither a subset nor superset of set B. Obviously if a technical term exists, great. Otherwise, imagine someone has ...
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### Is it a correct word about mathematical problems

Is the following word correct? Question) x = 3y, y = 4t Considering the equations above, represent x with respect to t. Answer) x = 12t Is the bold sentence correct?
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### Is “more-point function” correct? (mathematics)

How do I describe in English (i.e. without mathematical symbols) the following mathematical object, if I want to stress comparison with the two-point function? The n-point Green's function for n>...
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### Apostrophe for plurals with mathematical notation [duplicate]

I am a mathematics student. I sometimes see professors write something like the following (both in class as well as in formal publications). Let a1, a2, ..., an be natural numbers. Assume that all ...
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### An adjective for something which satsifies given conditions

I'm looking for a single-word adjective which means 'satisfies the given conditions'. For example, the condition might be, "Your number must be less than 10." Here the number 2 would be a _____ number....
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### Can anyone advise on a guide to the usage of “enote”?

I am looking to use "enote" in a mathematical description where the symbol occurs before the concept, and denote seems inappropriate. (I suppose with rewriting this can be overcome, but that's a ...
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### How to express the fact that clauses in a compound logical statement are connected by “AND”?

Say, I have three independent logical clauses, a, b, and c, and they are connected into one logical statement (a∧b∧c). How do I express this succinctly? Can I say, "a, b, and c are connected ...
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### “Under the condition that” within the realm of probaility [closed]

SO, I have a math question, kind of at least, where I think the wording is getting in the way. Determine the probability that First condition under the condition that Second condition. I ...
39 views

### Word For the Process of Finding Return on Investment

I am told that if I invest \$20 in this Apple Stock, in one years time there is a: 10% chance I'll get back \$25 10% chance I'll get back \$20 30% chance I'll get back \$15 50% chance I'll get back \$10 ...
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### Is 'sum' an okay replacement for 'problem'?

I've seen some people using the word sum as a substitute for the word problem, in a mathematical context even though the problem does not explicitly involve the addition operation. For example, We ...
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### Rankings out of integer and a half?

When giving items a score its not uncommon to restrict values to make scoring easier. For example: I can give a movie a score out of 5 stars using only integers, i.e. 0,1,2,3,4,5. Or I can give a ...
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### Inequality vs. Inequation, Equation vs. Equality

When talking about statements that two terms are mathematically (un-)equal (e.g., 1 = 1, 1 < 2, or 1 != 2), what is the correct notion for such mathematical statements? Are there special cases w.r....
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### Words describing constancy

Using only a single word in each case, I'm attempting to describe two different variations involving constancy of a certain attribute: Variation of an object without changing its weight. Variation ...
225 views

### Does “unioned” exist in the context of math?

In mathematics, if you have the sets A and B, you can build a new set C which is the union of A and B. I would like to say, something like Set C consists of the unioned sets A and B. but the ...
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### Word for “having horizontal and vertical directions” that a mathematician can use

As the title says, I'm looking for a word that means "having horizontal and vertical directions." The catch is that I'm a mathematician trying to describe notions similar to "horizontality" and "...
53 views

### “Total” relates to “sum” as X relates to “product”

In algebra, there is (as I see it) a subtle difference between “sum” and “total”: a sum is a term consisting of several summands that are added up,e.g., “5+5”, whereas the total is the result of this ...
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### How can I describe the intersection between a circle and a curve?

I have a curve C and a point x in the curve. At the point x, I draw a circle B with radius r and centered at point x. That circle B will cut/intersection (with) the curve C as red sub-curve line. I ...
343 views

### Why do we hyphenate between numbers? Example: twenty-six

I have found many places that list the various rules on using hyphens in math, but nothing to explain why we have the rule. I have some students who are asking and I would like to be able to give ...
283 views

### What's the word for the small square indicating a right angle in a geometric figure?

I'm talking about something in geometry notation and/or drafting, I think. It's the mini right-angle shape you can draw within an angle to indicate that it's ninety degrees. E.g., the mark denoting ...
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### Statistician's word for a distribution curve tailing less steeply to left or right

I know the word normal distribution. But what does a statistician call it when the curve of the distribution tails less steeply (ie falls more gradually) to the left or right?
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### do you use “ The” with mathematical methods?

For intra-cluster relationships, we applied mathematical optimisation to choose the best tree produced by neighbour joining method. Or For intra-cluster relationships, we applied ...
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### How do you read powers and roots?

I'm wondering how do you read the following expressions. I have some guesses but I'd like someone to confirm whether my guesses are right and if there are other ways to read those numbers other than ...
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### what is the preposition equivalent to “divided by” [duplicate]

"times" is the preposition equivalent to "multiplied by". what is the preposition equivalent to "divided by"?
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### Word for “1 of 3” [closed]

Is there a word (or two) for "N of M" form? Example: "2nd" is an ordinal number "5 November 1605" is a date "3 of 5" is a ...? Thanks!
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### How to name the diagonals of a square so one can be told from the other?

A square has two diagonals, so how can I to name the separate diagonals if I want to distinguish one from another? I mean something like the up to down diagonal and the down to up diagonal. Do you ...
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### Quarter Asteroidal Hypocycloid, in Layman's Terms

Take a gander at the hypocycloid. You may recognize the shape from the logo of an American football team... My question is, how do you describe the tip of one such shape in common parlance (in ...
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### When the article the is used before theorem names

When writing math papers, one sometimes has to refer to some famous theorems, for instance, the Pythagorean theorem. Shall I write "by Pythagorean theorem", or "by the Pythagorean theorem". When ...
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### Layman-accessible nouns for the intersection and union of sets of appointments

I'm looking for layman-accessible nouns (or concise descriptions) for the union and intersection of sets of appointments, in the context of planning software. In this scenario appointments between an ...
1k views

### How do you explain cubic growth of a function

When reading scientific papers I have seen people explain the growth of a variable linearly, exponentially. However how would one say for a variable which grows in quadratic fashion, or cubic? I don'...
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### Word for a “cell” in a 3×3 matrix

In a 2×2 matrix the intersection of a single row and column can be referred to as a quadrant. Is there a corresponding or more general term for a 3×3 matrix?
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### What do you call the intersection of a rectangle and a circle?

The intersection of two rectangles is called a corner, but is there a word for the intersection of a rectangle and a circle? Is it still a corner? This picture I made probably explains it better: (...
4k views

### How to pronounce fractions larger than a twentieth, where the last digit of the denominator is a 1 or a 2? i.e. one thirtieth is to 30 as _ is to 31

Disclaimer: I speak British English. I've noticed a lot of differences between the way Americans and Brits pronounce numbers.1 Since the question concerns this, I thought it might be appropriate to ...
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### Which alternative is best English? [on hold]

Are there any specific rules in English about how to refer to something that was introduced in the previous sentence? For example, compare these three sentences: Let X and Y be random variables ...
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### How to make this sentence shorter?

It appears that this site does not support LaTeX, so sorry for the ugly formatting. I would like to explain the sentence Let X ~ N(mu_x, sigma_x^2) and Y ~ N(mu_y, sigma_y^2). with plain english....
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### Colloquial meaning of 'exponential decrease'

I often have a hard time figuring out exactly what is meant when exponential/ly is used outside of mathematics. This is especially true for exponential decrease. Take the sentence: The number of ...
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### submatrix or sub-matrix? [duplicate]

I 've seen several times "submatrix" in code and manuals. However, whenever I write in my Latex editor, it gets underlined in red, as a spelling mistake. Same things happens now, just as I am writing ...
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### What is the word for an arbitrary simple example, typically used with proofs?

Typical usage is with math, or philosophy, proofs. Also typically the simple example disproves the theory, but is of a arbitrarily contrived nature and not something that would naturally arise. Is ...
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### Word for opposite parallel vectors

Given two points, A and B, there are two vectors: A-->B and A<--B which are parallel but pointing in opposite directions. I remember learning as a kid a word which simply defines the line upon ...
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### “less” or “fewer” for countable and uncountable infinities [duplicate]

I feel like this is too grammatical for the math stack exchange, but I am sorry if it is too mathematical for this stack exchange. In math there are several different types of infinity, some of ...
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### Word describing “State goes back to original state after state-modifying actions A followed by ~A”

This word is slipping my mind and it is driving me crazy. Not sure if it is a math term or computer science term, but I use it a lot in development (when I can remember it!) Basically, you have the ...
2k views

### greatest or largest number [closed]

Which of the following statements is correct? a) 7 is the smallest and 9 is the greatest number or b) 7 is the smallest and 9 is the largest number The research so far indicates that both terms ...