# Questions tagged [math-history]

Use this tag for questions concerning history of mathematics, historical primacies of results, and evolution of terminology, symbols, and notations. Consider if History of Science and Mathematics Stack Exchange is a better place to ask your question.

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### Motivating Gauss's suggestions of prize problems for the Goettingen university.

(This question was posted before in History of Science and Mathematics stackexchange, but since I recieved no comments after 6 days, I decided to reask it here.) P. 220-221 of volume 12 of Gauss's ...
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### How did Issac Newton write integral symbol? [migrated]

Issac Newton is known as the discoverer of the FTC(Fundamental Theorem of Calculus), so maybe he wrote the integral symbol and derivative symbol. I know he wrote the derivative symbol as $\dot y$ but ...
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### Descartes’ Translation Problem

One of the issues Descartes came across in his work on the translation between algebra and geometry was representing a set of equations of multiple unknowns ( a system of $n$ equations and n unknowns ...
1 vote
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### How did Newton compute derivatives by first computing power series?

I've read that the way we compute power series these days is not how it was originally done. These days, we compute the derivatives of the function we wish to expand in order to compute the power ...
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### I am asking about the first to prove this Theorem. [closed]

It's a well know fact that if a matrix $A_{n \times n}$ satisfies $|A|<1$ in the operator norm, than it's Neumann series converges and is equal to $A^{-1}$. The question is: Can we trace back to ...
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### Euclid's definition of a prime

In Euclid's Elements, Book VII, Definition 11, Euclid states that A prime number is that which is measured by a unit alone. As I understand it, this means that a prime number's only divisor is 1. ...
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### How to show the similarity notation?

I have defined a similarity measure $U_{sim}(T_t,T_{t-1})$ which is the similarity metric between two items. Now I wanna show the the similarity between $T_t$ and all previous $T_i$s. I represented ...
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### Really: why is the Kelvin transform harmonic?

So, it is a famous fact that if $u:\mathbb{R}^n \to \mathbb{R}$ is an harmonic function, then its Kelvin transform $$(Ku)(x) := \frac{1}{|x|^{n-2}} u\left(\frac{x}{|x|^2} \right)$$ is harmonic too. ...
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### In its earliest usage, did the notation "5 x 3" mean "five groups of three" or "five, placed into each of three groups"?

In today's time, if I take a look at what language we use to read out "5 x 3", it could be read out as "five-times three" (that is: three, five-times, as in five groups of three), ...
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