# Questions tagged [terminology]

For questions about terms, definitions and related concepts used in science and mathematics.

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### Why statistical moments are called moments?

According to the Jeff Miller's Earliest Known Uses of the Words of Mathematics "Moment was taken into Statistics from Mechanics by Karl Pearson when he treated the frequency-curve (or observation ...
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### How influential was the Kerala school to European development in Calculus?

Did it influence the work of Newton or Leibniz, i have often heard that Europeans "stole" calculus from the Kerala school, these are views often parroted by Indian nationalists, but how accurate is it?...
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### Etymology of Some Terms Used in Ratio and Proportion in Old Algebra Textbooks

In older algebra textbooks for high school (mainly 19th century) four properties of ratio and proportions were used. The properties were Invertendo, Alternendo, Componendo, and Dividendo. This ...
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### Origin of "Spline" word

I was studying interpolation by Splines in numerical analysis and started to wonder the word's origin. I've found that it was a system used in technical drawings using weights but couldn't find why ...
216 views

### Where does the habit of calling the elements of a projective Hilbert space "rays" originate from?

When describing the projective Hilbert space as the state space in quantum mechanics, physicists habitually refer to its elements as "rays in Hilbert space", while the mathematical literature seems to ...
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### Where does the letter S in "$S$-units" and in localization $S^{-1} R$ come from?

In number theory, we may encounter the notion of $S$-unit, $S$-integer, etc. where $S$ is a finite set of prime numbers (for simplicity). For instance, if $S = \{2,3\}$ then the $S$-integers are the ...
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### First appearance of the term sinus cardinalis

Who introduced the term sinus cardinalis? I do not mean the abbreviation sinc, which was introduced 1952 by Woodward.
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### Who coined the term "uniform" as in "uniform distribution"?

During the late 16th century and early 17th century, published work about probability theory (e.g. Liber de ludo aleae by J. Cardan published in 1663 but writen around 1564) studied dice games using ...
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### Indiana Pi Bill: Other attempts to establish mathematical truth by legislative fiat?

Wiki: The Indiana Pi Bill is the popular name for bill #246 of the 1897 sitting of the Indiana General Assembly, one of the most notorious attempts to establish mathematical truth by legislative ...
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### Why are microcanonical, canonical and macrocanonical ensembles called that way?

In statistical mechanics, why microcanonical, canonical and macrocanonical ensemble are called that way? Is there any reason according to the size of the system they can describe properly ( I don't ...
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### Who invented the term "Kuhn loss"?

This term has been discussed on this forum, e.g. under Examples of Kuhn loss?, and has been attributed to Kuhn himself. The term refers to the loss of explanations and predictions of the prior ...
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### Earliest known usage of letter gamma "Γ" for reducible representation in group theory

Does any know the earliest known usage of the Greek letter gamma for showing a reducible representation of a group? This symbolism is commonly used in character tables in chemical applications of ...
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### Who was the first to use the "does not exist" sign ∄?

Who was the first to use the "does not exist" sign ∄? I'm aware that Giuseppe Peano originated serifed ∃ and, moreover that Whitehead and Russell repurposed Peano's serifed ∃; I'm also aware that ...
I'm looking for references about how the concept of mechanical work ("$\boldsymbol{F}\cdot\mathrm{d}\boldsymbol{r}$") or the concept of mechanical power ("$\boldsymbol{F}\cdot\boldsymbol{v}$") came ...