Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [mathematics]

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

1
vote
2answers
37 views

Meaning of this (convoluted) sentence from the book “Probably Approximately Correct”

As a non native english speaker sometimes, I'm having hard time understanding not conventional sentence as the following. Can you rephrase the sentence (in Bold) in another way? This upper bound ...
3
votes
2answers
485 views

What do you call a relation between two unknowns?

I know that in mathematics, the relation a = 2b is called an equation. Is the relation a > 2b is still called an equation or is it called something else?
11
votes
6answers
4k views

Why do we call it “combination lock”? [closed]

Variation lock seems more accurate by mathematical definitions Edit(to give it more context) Hey, can you tell me the combination of your lockbox ? Why don't we say variation(or permutation)? The ...
1
vote
2answers
93 views

How to read … (dot dot dot)?

For example here the sentence is, "Consider any sequence of data points x0, x1, x2,... in R" It messes up my mind when I can't loudly read something. How is ... (dot dot dot) pronounced in such a ...
2
votes
1answer
42 views

What is the correct usage of the tilde symbol with negative numbers? [closed]

The tilde symbol (~) is used in academic texts in place of about or approximately. Generally, it is placed immediately before the number (eg. AUD ~2.4 million), which works for positive numbers, ...
7
votes
7answers
4k views

Can I say eight-gon, nine-gon and ten-gon instead of octa-, nona-, and deca-gon?

As a non-native English speaker I struggle with Greek prefixes. Am I allowed to use just normal English numbers in place of them? Is it natural? Or do I have to learn how those Greek prefixes work at ...
3
votes
3answers
992 views

What's the little number on the top of a number w/ unit?

I want to ask what is the little numbers on top/over any random number? For example, 75 in² and 125 ft3. What is it called and what does it mean is my question. I couldn't find anything online since I ...
-1
votes
1answer
31 views

Term for “extent/proportion of a population [that meet some condition]”

What is a technical term (perhaps from statistics) for the extent (or proportion) that a specified condition applies to some given population? For example: There is a communicable cancer currently ...
0
votes
2answers
54 views

Doubt in some English/math grammar

I'm currently writing a math article in English, I'm wondering if i should writhe " replacing it on equation" or " replacing it in equation". Thank you guys very much.
0
votes
1answer
33 views

Which one is correct? vector “b” or “b” vector?

In mathematical writing, when b denotes a vector, which sentence is correct when we want to mention that b is a vector? a) We multiply the b vector by ... b) We multiply the vector b by ...
12
votes
4answers
3k views

What is a term for an operator/function in which the order of parameters makes no difference?

I'm trying to recall the term for an operator/function where f(a, b) = f(b, a). For example, a + b = b + a for all values of a and b. However a - b != b - a unless a = b.
5
votes
1answer
88 views

Why is the word “the” used before different categories of calculus?

I've noticed that, when referring to certain branches of calculus, mathematicians sometimes precede the name of those branches with the word "the". For example, "the lambda calculus" or "the ...
1
vote
0answers
38 views

An article after 'called'

In my text, many concepts are introduced (defined) by a sentence with 'called'. Examples are: This condition is called eigenvariable condition. This procedure is called the truth table method. A ...
0
votes
1answer
37 views

Proper term for “converting” time domain data to frequency domain

I had difficulty deciding if this should go in stack overflow, electrical engineering or here, English language. Forgive me if it's in the wrong place. I am looking for a word that describes the ...
3
votes
2answers
64 views

The meaning of mathematics from an etymological point of view

I study mathematics and I wonder what mathematics means. I've been searching for the definition and until now I haven't found something clear, so I decided to begin from the start. On Wikipedia I ...
0
votes
1answer
29 views

distribution/ histogram procedure

How one can describe correctly the procedure of making a histogram. I want to replace the sentence "distributions of reconstructed energies of events taken with the same initial momentum in the same ...
1
vote
2answers
70 views

Term for 'branching into separate parts and then recombining' [duplicate]

For example, when a river bifurcates into two separate streams of water, and then these two streams rejoin further along to become a single river once more. Bifurcate itself is not generalized enough ...
-1
votes
1answer
55 views

Can I “unindex/deindex” a variable?

It is a fairly established terminology in mathematics and programming that one can "index a variable", in the sense of appending a dimension of variability to it (e.g. here and here, respectively). ...
-1
votes
4answers
84 views

“Sum of integral” or “result of integral”? [closed]

Which is a more correct term for the result of mathematical integration, the sum of an integral or the result of an integral? The first seems more on-point to me, but somehow the second sounds ...
1
vote
2answers
59 views

“zenith” for a line graph?

I have a line graph which illustrates beef consumption. Beef sales peaked at 200 grams per person per day in 1986. Can I say that "The zenith of beef sales came in 1986, when they reached the ...
0
votes
2answers
57 views

Difficulty with trying to describe the quantity of something

I am trying to write a word problem, and am having trouble with the wording of one part. Let's say for the sake of example that there are 10 apples and 20 oranges. Call them both items. I am trying to ...
1
vote
1answer
129 views

How do you pronounce “f(n) = Θ(g(n))” in English? [closed]

In Algorithm's Performance, if f(n) = Θ(g(n)), then we can say: g(n) an asymptotically tight bound for f(n) How do you pronounce f(n) = Θ(g(n)) in English? Would it be correct to say "f(n) is the ...
0
votes
1answer
45 views

How does one qualitatively describe the cubic increase of experimental data [duplicate]

I have generated some data Y and would like to describe its variation as a function of some variable X. Using MS Excel, I obtained the trendline shown in the figure below which suggests that Y varies ...
0
votes
2answers
135 views

Basis of or basis for in mathematics

I read this stackexchange about whether to say "basis of" or "basis for". Does the answer given there (that both are correct, of is newer and for is still more common) apply to mathematics as well?
1
vote
0answers
283 views

“x is 2 greater than y” instead of “x is greater than y by 2”

Is saying x is 2 greater than y (meaning x is greater than y by 2) acceptable?
1
vote
1answer
59 views

What's the word for this geometric solid?

What's the word for a geometric solid with two congruent regular pentagons in parallel planes and ten congruent triangles on lateral faces? It's neither a pyramid nor a prism. I chose pentagons ...
2
votes
2answers
98 views

Name of a “mathematical declaration”

I'm looking for a single word that essentially means: "mathematically formal declaration." Here, declaration is in the ordinary sense of the word; i.e a declarative sentence. The word theorem will ...
0
votes
0answers
23 views

Should I write “a n-tuple” or “an n-tuple” [duplicate]

While writing a math paper, I have met many places to determine which indefinite articles should I use before a math symbol. Another example is "a/an f-exceptional divisor", here f is a math symbol ...
1
vote
2answers
2k views

Alternatives for “For the sake of completeness”?

I'd like to include in a paper on mathematics the phrase: "for the sake of completeness, we first show..." or words to that effect. However, the word "completeness" has a precise technical ...
2
votes
2answers
141 views

Why do we say “at right angles”, not “at a right angle”?

If two lines are perpendicular, we say that they are at right angles. This expression looks rather clumsy to me, and I'd prefer saying at a right angle. Like I would say intersect at a sharp angle, ...
0
votes
0answers
32 views

“for every A, a B exists such that A<B”

Is the following sentence (grammatically) correct? For every living man a heart exists that is beating inside him. The following is more readable, but my question is whether the former sentence is ...
0
votes
1answer
95 views

How can I say “¹⁄ₓ” in words?

It is possible to state a fraction such as ¾ in words as follows: three fourths. Can someone please let me know how to say ¹⁄ₓ in words?
0
votes
1answer
55 views

Word for the property changed by reflection

If I take a shape and its mirror image, what is the word for the property in which the two differ? For example, they differ in position after a translation, or orientation after a rotation. If the ...
1
vote
2answers
52 views

Can one 'reject a vector on another vector'? [closed]

In mathematics, one can project vector A onto another vector B, and the result vector P is called vector projection. There's also related term, "vector rejection" defined by R = A - P where R denotes ...
0
votes
1answer
85 views

How do I write a variable as an ordinal number?

I'm charged with translating a technical document into English, and ran into a bit of an odd problem: the document refers to undefined numbers of elements, and uses letters to represent those numbers, ...
0
votes
5answers
84 views

Another way to say the max and min number [duplicate]

I've been writing a program and I often come across naming variables that store the maximum and minimum value in a set of data. Is there any word that means both the max and minimum values of ...
0
votes
2answers
79 views

Meaning(s) of the Word “Equation”

According to the dictionary, an equation is "a statement that the values of two mathematical expressions are equal." More specifically, can the word "equation" properly denote a particular ...
0
votes
1answer
105 views

Idiomatic way of implying “by a multiplicative factor”

I was told that saying A equals B within a factor C is not correct. Is it true? My interlocutor, who is not a native anglophone, told me that "within" cannot be used in such a way, arguing that "[....
1
vote
2answers
89 views

Avoiding fractional digits when referring to an average number of people

Initial examples Having studied students in a sufficiently large number of classes, you might say something like: The average number of professional athletes per class is 0.15. On average, ...
0
votes
0answers
34 views

Should one use singular or plural form when the number is equivalent to one or negative one? [duplicate]

I understand that for a countable noun, one is supposed to use the singular form if and only if the number is equal to one or negative one; for example: one degree negative one degree 0.75 degrees ...
34
votes
2answers
5k views

Word that means the classification of a number as even or odd

For instance for male or female the comparable word would be sex. What is the word that means the state of being either even or odd (referring to numbers)?
0
votes
1answer
104 views

Reading mathematical expressions like 4x: four ex or four exes?

When I read out (as a teacher at the board) an algebraic expression where a variable is multiplied by a cardinal greater than 1, eg 4x, shall I use the variable name in the plural or in the singular? ...
0
votes
2answers
265 views

A word for a machine that can generate every possible combination

Let's say we have a machine whose sole purpose is to generate every possible combination from sets/columns of values. Examples: Single column. Column 1 values: 1, 2, 3 Generated output: 1 2 3 ...
1
vote
1answer
46 views

Is “for almost each object” good grammar in this example?

In the 2nd paragraph at Kolmogorov complexity, these is the following sentence. "In particular, for almost each object it is not possible to compute even a lower bound for its Kolmogorov complexity ...
0
votes
1answer
38 views

How to read out partial derivatives [closed]

If you have a 2-variable function f(x,y) you can compute its partial derivatives f_x(x,y) and f_y(x,y), but also the mixed partial derivatives f_{xy}(x,y) and f_{yx}(x,y). How do you read these ...
3
votes
1answer
83 views

hyphen in adjectives with mathematical symbols

In mathematics and physics (and other fields of science), it is quite common to use symbols in lieu of names. For instance an object can have a symmetry G, i.e. the name of the symmetry is G. I am ...
0
votes
1answer
169 views

Word for a zig-zag polygonal line

We have to find an adjective to describe a family of abstract mathematical objects with a shape that (in an abstract setting) reminds of a diagonal polygonal line like the following. The segments ...
1
vote
0answers
42 views

In statistics' confusion matrix, why does 'recall' have that name?

There are a number of words used very frequently to describe properties of a confusion matrix (or contingency table). Among them there is the word 'recall', this is to describe: tp ――――― tp+tf ...
2
votes
3answers
52 views

Adjective for combining some lower dimensional objects to form a higher dimensional object

Are there some English words that describe the dimension of objects changed, by combining some lower dimensional objects to form a higher dimensional object. For example, from the lower dimensional ...
4
votes
2answers
3k views

Why do we say 24 x 7 x 365 rather than 24 x 365?

I saw that when we are saying that something is available at all days of the week at all hours, we say its available 24 x 7, and when its available every day (or, every week) of the year at all hours, ...