# Tagged Questions

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

713 views

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

Like numerator / denominator, but for differentiation.
128 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 ...
325 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. ...
100 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 ...
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. ...
70 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 ...
155 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...
196 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 ...
626 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?
53 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 ...
131 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?
83 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 ...
274 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: "...
606 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, I'...
163 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 ...
60 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 ...
171 views

### I want to write some mathematical sentences in the English language [closed]

I want to write these mathematical sentences in the pure English language: In this paper, for every vertex a v in G, we find a shortest path joining v and w in G. My proposed sentences are: In ...
7k views

### What do you call a cylinder with a hole down the center?

Imagine a 3D cylinder, like a can. Now imagine that almost like an axle spot for a wheel, there's a hole shaped in a perfect circle going down the cylinder. That's the shape I have to figure out the ...
149 views

### Can “paraxial” mean “axis-parallel”?

The Wiktionary lists under the meanings of paraxial: (mathematics) Parallel to one or more axes of the coordinate system paraxial rectangle The respective information was added ...
377 views

### Admitting a unique fixed point in math

I've noticed that some of my professors seem to like to use the term admit in the following sense (from the contraction mapping theorem): "If F is a contraction from a complete metric space to ...
5k views

### Why must the cent sign come after the value? [duplicate]

Is it pureley by convention that the dollar symbol (\$) comes before the value and the cent symbol (￠) come after? For example \$1.50 vs \$1 and 50￠ Also would it ever be correct to write a value of ...
1k views

### What is the general term for “greater than or equal to” and “less than or equal to”?

We call this equation: A = B We call this inequality: A > B A < B What do we call this: A ≥ B A ≤ B ?
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### What is the term for representing whole numbers with integers instead of English words?

For example, "I am giving you the ___ form". Where I am using numeric characters e.g., 1 instead of one. I don't think canonical exactly fits here because the English version is seems to be unique as ...
79 views

### Why do we have “Coulombic” but not “Coulombian”?

In physics, we have Coulombic interaction. Why do we have "Coulombic" but not "Coulombian"? At first, I think that because the letter b from Coulomb decides which suffix comes after it, but when I ...
270 views

### Word for position and direction

I'm looking for a word that encapsulates both an object's position and direction. Similar words: a "point" has just a position. a "vector" has a direction and magnitude an "orientation" has just a ...
255 views

### Term for numbers that have at least one non-zero significant digit after the decimal point?

So, a number that is nothing but fractions is "fractional". A number that has a whole number and a fraction is "mixed", if you want to call it that. And the portion after the decimal point is called ...
63 views

### Use of “recast” in mathematics

Do we write the relationship recast, OR the relationship recasts? ("s" at the end) y = 3x       (1) Relationship (1) recast y−3x = 0 &...
1k views

### Does rational come from ratio or ratio come from rational?

Going through law school we often used the latin phrase ratio decideni - meaning the reasoning of a decision. In this context we took the latin word ratio to mean thinking process. Recently I saw an ...
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### What is the etymological history behind the mathematical “induction” versus the philosophical “inductive [reasoning]”? [closed]

Was talking about it in a (particularly off topic) university lecture on Emperical reasoning (deductive - our logic-math course, vs inductive - "gravity gets taken for granted"). A reason we were ...
50 views

### “conal” vs “conical”

Is there any difference in meaning, usage or frequency between the words "conal" and "conical" within a mathematical context, i.e. when talking about cones?
384 views

### Is there a fraction prefix for “(one-)third”?

I am a mathematician, working with things called 1⁄k-regular polytopes, dubbed thus by Conway. For the case of k = 2, as in ½-regular, it is naturally pronounced and written half-regular. However, I ...
180 views

### Use of articles in mathematical writing

I'm writing a section about some mathematical properties and have trouble with the use of articles (indefinite/definite/no). I could come up with the following variants, but don't know which one is ...
154 views

### what do you call a table that contains counts of items which have 2 characteristic attributes represented by the rows and columns?

What do we call a table that holds counts? A binning table? Frequency table? Unnormalized probability density table? What if, instead of a table, it's just a list? And what if the table has more than ...
425 views

### How to write this sentence about the square root of a matrix [closed]

Suppose in a math paper I formulated the following sentence: The square root of the matrix A is well-defined, denoted by √A… A friend of mine told me that it sounds not correct.
341 views

### “3 times a is increased by b” vs “3 times a increased by b” [closed]

In my thinking: 3 times a is increased by b: This is a SVO sentence. The subject is "3 times a", the verb is "is increased" and the object is "by b". Therefore the correct form in math is 3a+b 3 ...
449 views

### How to read “A = (πr)²” so as not to mistake it for “A = πr²” [duplicate]

None of the 26 answers given here, or the 5 answers given here mentions any similarity between the pronunciation of E = mc² and A = πr², yet I still remain confusioned as to what distinguishes the ...
261 views

### What is the name of this kind of chart/graph?

The chart that shows the value of every aspect of an entity. It represent properties of an entity visually, with areas so that we can easily regconize the strong/weakness, etc... Here is an example: ...
323 views

### To be attained at/on?

I'm writing a math paper, so it would probably be easier to answer this question with some background in math. Assume I have a set of "things" and some function turning these things into numbers. I'm ...
628 views

### In math, how do you refer to a subscript or superscript indiscriminately?

In a math or physics context, I would like to say the following: In this equation, we subscript or superscript the variables by "eq" which stands for "equilibrium". The "eq" is added as a ...
975 views

### Words for north/south and east/west dimensions?

There is "length", "width", "height", "depth", etc but these words are all relative in respect to the current viewer. The width for one person could be the depth for another person (who is at a 90 ...
531 views

### “exact soluble model” or “exact solvable model”, “analytic” or “analytical” solutions

In physical science and math, we encounter some models that can be analytically solved. This means that the properties of models are fully understood and determined by the analytical solutions. In ...
2k views

### What do you call a fraction that cannot be written as a finite decimal?

For example, the fraction ⅓ cannot be written, because it repeats infinitely (0.33333333... etc). Is there a particular word for numbers that cannot be written directly, but must be expressed as ...
263 views

### Math word for an object not centered at the origin?

Is there a word that can describe a geometric figure such as a circle or ellipse that is not centered at origin (0, 0) in cartesian space? I'd like to find an agreed upon mathematical word, but if it ...
131 views

In logarithms, a decade is a range of values from N up to 1o×N. What term should be used to describe a range from N to 2×N, when using binary numbers? A musical octave covers such a ...
1k views

### How is the sentence “The symbol % is used to represent percent” read?

I have three sentences in my math textbook that use the symbol %. The symbol % is used to represent percent. Usually denoted by the symbol %. Most calculators have a key with the % symbol ...
52 views

### Theorem about uniqueness of solution

I want to write down such a theorem. Theorem. Strong existence and pathwise uniqueness hold for Equation (8). A unique solution is a continuous Markov process. I have a question concerning the usage ...
156 views

I have a question about the sentence "The evolution of a process admits the following description". I checked then the phrase "admits the following description" in Ngram Viewer and found no ...
764 views

### Why are decimals read as fractions by some cultures?

I find it very strange that the top results on Google for "how to read decimal" give me a very strange way to read them - as fractions. I have learnt to read the digits individually and it makes a ...