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Questions tagged [terminology]

Questions on the usage and meaning of words in mathematics, the names for mathematical entities, and other such questions.

Terminology is a discipline that studies, among other things, the development of terms and their interrelationships. This tag is intended to be used for questions on the usage and meaning of words in mathematics, the names for mathematical entities, and other such questions.

8534 questions
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Indeterminate vs Infinite

In mathematics, can the terms 'Infinite' and 'Indeterminate' be used interchangeably? For example, Can I say that $\frac{0}{0}$ is indeterminate/infinite?
R004
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Is there a name in mathematics for the concept of moving between calendar dates?

I'm interested in the logic behind moving between dates in the context of different calendars. For instance, adding one day to Friday, 2nd June 2017 in the usual calendar gives Saturday, 3rd of June 2017. However, adding one day to Friday, 2nd of…
Oliver
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Find the term...

How do I get the number of possibilities by the length of these 'blocks'? The smallest block has to have a minimum of 2 numbers. What I already observed is, that it's always + (n-4)... Example: 4 : 2 + (5-4) 5 : 3 + (6-4) 6 : 5 At the…
Janick Fischer
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what is this symbol ' ﾻ ' means?

What ㅋ or ﾻ means? I know this is stupid question... and sorry for asking this... actually, someone asked me "I know what E 'reversed'. but what is 'reversed F' mean?" Since I knew he is majoring math, I thought E is some kind of function or…
MrTanorus
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would comparing two sizes be considered a calculation?

If I am simply comparing two numbers and deciding which one is bigger is this logic considered a calculation? (2>1 = true) What about other logic statements? What qualifies an operation as a calculation?
Xitcod13
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Looking for the right terminology: Subset of $\mathbb{R}^n$ with non-zero measure everywhere

I'd like to know if there exists an established name for a set $T \subset \mathbb{R}^n$ with the following property: For every $x \in T$ there exists a convex set $C \subset T$ such that $x \in C$ and $\lambda(C) > 0$ where $\lambda$ is the Lebesgue…
janismac
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What is the meaning of this arg() function

Can someone help me to clarify this equation: $$g^{*}=arg\left(\sum_{g=0}^{255}h(g) > \delta N\right)$$ where h(g) is the amount at gray level g threshold $g^{*}$ $\delta=0.99$ N is total number of pixel Everything is accorded to this doc…
doudev
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Term for multiple disconnected areas

Consider the white patches in the following image which can be thought of as sets of $(x, y)$ ordered pairs on an $xy$ plane. We can say the the image has 4 white patches (may or may not include boundaries) and we can also say that the image has one…
Peeyush Kushwaha
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In $f(t) = \cos(\omega \cdot \log t)$, would I refer to $\omega$ as a frequency, does it have another name, or does it lack a common name?

If I have the function $f(t)=\cos(\omega \cdot t)$, $\omega$ is commonly referred to as a frequency. Suppose instead, though, I have the function $f(t) = \cos(\omega \cdot \log t)$. Would I still refer to $\omega$ as a frequency? And for that…
Nathan McKenzie
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Naming of Bases.

When working in the ubiquitous 'base 10', the actual number 10 is used. However, when working in, say, base 5 (base five) the actual number cannot appear, as it's represented by '10', so is it just for convenience that we call it 'base 5'. Surely…
Tim
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How is this called?

In french, there is a word for what's called an "application" that can be bijective, injective or surjective, in english I only see the word "function". In french, an application is defined as a relation between two sets, where each element of the…
Pop Flamingo
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Is it always meaningful to define a function as a tensor product of 2 functions?

When studying linear function spaces I encounter tensor product of the spaces and also tensor products of the vectors, for example: A standard exercise is to show that if $\left(\phi_n \right)_n$ is an orthonormal basis for $L^2([a,b])$ then…
Ranc
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Does this sequence $2^{r-i} 3^i, \text{for } 0\leq i \leq r$ have a name?

We have a sequence where the power of two (say) decreases and the power of three (say) increases. $$2^{r-i} 3^i, \text{for } 0\leq i \leq r$$ Is there a name for this?
Fred Daniel Kline
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What is this scaling operation called?

We have values representing measurements stored inside a grid and they range between [0,1]. These measurements are degraded using following formula $$\text{measurement} = \text{measurement} / (1 + \text{degradation factor}) $$ Degradation factor…
Sirish Kumar Bethala
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Is "quotienting" just the operation of taking of taking left cosets of a normal subgroup?

I have occasionally heard mathematicians speak of "quotienting" as if it were a verb. When someone treats "quotient" (in the context of group theory) as a verb, are they just referring to the natural projection homomorphism $\pi:G \to G/N$ where $N$…
AnalysisStudent
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