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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1answer
36 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 ...
1
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2answers
63 views

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 ...
2
votes
1answer
36 views

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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0answers
16 views

Grammatical number in formulation of mathematical problems

Let's consider this sentence: 'Find the X of these triangles'. I presume both variants are correct, but which is more common and sounds better in the place of X: 'radii' ('radiuses') or 'radius'?
0
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1answer
36 views

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 ...
1
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1answer
40 views

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 ...
2
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2answers
46 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 ...
3
votes
9answers
165 views

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 ...
3
votes
1answer
48 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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5answers
81 views

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 ...
4
votes
2answers
311 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 ...
4
votes
1answer
94 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. Posting from mobile, but ...
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2answers
53 views

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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2answers
39 views

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 ...
0
votes
1answer
49 views

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 ...
1
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2answers
65 views

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"?
0
votes
1answer
63 views

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!
1
vote
3answers
64 views

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 ...
2
votes
2answers
75 views

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 ...
0
votes
2answers
56 views

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 ...
1
vote
1answer
44 views

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 ...
2
votes
3answers
547 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 ...
1
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3answers
177 views

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?
2
votes
2answers
152 views

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: ...
15
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7answers
2k 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 ...
1
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2answers
119 views

Which alternative is best English?

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 ...
2
votes
1answer
178 views

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 ...
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3answers
150 views

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 ...
0
votes
2answers
64 views

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 ...
2
votes
3answers
121 views

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 ...
0
votes
3answers
130 views

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 ...
2
votes
2answers
233 views

“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 ...
0
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0answers
46 views

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 ...
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votes
3answers
766 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 ...
1
vote
1answer
535 views

In differentiation as in dy/dx what do you call y and x? [closed]

Like numerator / denominator, but for differentiation.
2
votes
1answer
124 views

How did 'up to' evolve to mean 'regardless of', in maths?

Even the OED seems not to have featured it. I couldn't find an explanation on Etymonline. [Wikipedia:] If X is some property or process, the phrase "up to X" means "disregarding a possible ...
2
votes
1answer
226 views

Definite article in Maths: “(the) function f”

Is the definite article correct/necessary in sentences like the following? A line that intersects (the) circle C. We can see that (the) function f has a maximum at x=0. Draw a line past (the) edge E. ...
1
vote
1answer
87 views

“derivative” is to “derive” as “primitive function” is to “?”

Basically, what is the opposite verb of "derive", i.e. "to take the primitive function of"? (Context: I'm trying to make wolframAlpha take the primitive of a function, but I can't get formulation ...
6
votes
3answers
1k views

Is there a word for opposite numbers?

Example: -100 and +100 - is there a way of describing the relationship between these numbers? Obviously, I've already come up with "opposite", is there anything else? This is for use in an email. ...
3
votes
1answer
58 views

If A subtends B, can B also subtend A?

I wrote: Things farther away subtend smaller angles at the eye. Wiktionary has this example of the usage of "subtend:" A 43° angle subtends an arc about ¾ meter long on a circle with a ...
0
votes
2answers
102 views

Should I use 'follow lemma (1)' or 'follow from lemma (1)'?

In mathematical papers, some theorems are proved based on some existing lemmas. Then, should I use Following lemma (1), we prove... or Following from lemma (1), we prove...
0
votes
1answer
139 views

When advertisers say product X has N times less 'thing' than product Y, what do they mean [duplicate]

Here is an example: NESTLÉ a+ SLIM Milk has 15 times less fat than regular toned milk. Source:http://www.nestle.in/brands/nestleaplusslim So the question is this: say regular toned milk has 100 ...
0
votes
2answers
347 views

Difference between “evaluate as” and “evaluate to”

Does the expression 1+1 evaluate as 2 or does it evaluate to 2? Is one (or both) of the above not proper English or misused in this context, or are they both okay?
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votes
1answer
49 views

using amidst in mathematic [closed]

I use a very formal writing style. If I want to say that I calculate a function between 5 times between each two points, can I use amid these ways? The function f(t) is calculated 5 times amidst ...
1
vote
1answer
113 views

Is there a word that means “derivative-able”?

I'm just curious, so is there a word that you could use to express that a mathematical function has a derivative?
1
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3answers
77 views

Comma and arithmetics

Should one put a comma before an arithmetic operation? What about long expressions? Example: The final distance is equal to the initial distance plus initial velocity multiplied by time, plus half ...
2
votes
1answer
256 views

Do we have to use ordinals with largest/smallest?

In every-day language, I would say, "Give me the fifth largest pumpkin you have"; that is I would use the ordinal. However, this feels clunky in mathematical texts, especially when reading out loud: ...
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2answers
528 views

What comes after the ducentiquinquagintasexions?

Hypercomplex numbers that use the Cayley-Dickson construction seem to follow a Latin naming convention related to the size of the algebra (which is always a power of two). As an English.SE question, ...
1
vote
2answers
122 views

Genitive: with or without “the” [closed]

I would like to know which variant is correct: "Decimal expansion of the first generalized Euler's constant" "Decimal expansion of first generalized Euler's constant" "Decimal expansion of the ...
1
vote
0answers
54 views

Nonabelian or non-abelian?

I asked this question on Mathematics Stack Exchange (here) but I haven't had any luck so far. Allow me to copy the question: If I wanted to be scrupulous about correct spelling, is there any reason ...