Question on the meaning, history, and usage of mathematical symbols and notation. Please remember to mention where (book, paper, webpage, etc.) you encountered any mathematical notation you are asking about.
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0answers
22 views
Can anybody recommend a comprehensive source for understanding mathematical notations?
I foten struggle with understanding some of the mathematics written down in papers. This stuggle is often due to notation used. Therefore, I was wondering whether somebody is aware of a resource that ...
0
votes
0answers
24 views
Resources for learning formal math notation
Does anyone know of some resources that provide a good introduction to common notation used in formal math? For example, I honestly don't know how to interpret $f: \mathbb{Z} \rightarrow \mathbb{Z}$. ...
2
votes
6answers
81 views
Function Notation
due to our national cirriculum (the way in which it was taught in high school). We just said that f(x) means a function. Though I understand this isn't necessarily correct? In high school we used ...
4
votes
2answers
183 views
What does the notation $\twoheadrightarrow$ mean?
I don't know what this double-arrow $\twoheadrightarrow$ means!
4
votes
1answer
42 views
What's the difference of naming a polynomial ring as $\mathbb{C}\{ x,y\}$ and $\mathbb{C} [x,y]$?
I sometimes see both notations and I am led (maybe misled) to believe that they are the same thing. What is the formal difference between both of them? Or there isn't any?
2
votes
2answers
32 views
Matrix rows notation
I'm working with a set of $M$ vectors $ \{\mathbf{w}_i \in \mathbb{R}^N, \, i = 1, \ldots, M \}$. Since single vectors are usually considered as column vectors, I'm defining a matrix
$$
\mathbf{W} = ...
1
vote
1answer
41 views
Is this the correct notation?
$\left [ \left \{ 1,2,3,4 \right \}! \right]^{-1}$Is this the correct notation if one wanted to obtain the factorial for each number in a sequence and then take the sequence and inverse each number in ...
7
votes
5answers
182 views
What could be better than base 10?
Most people use base 10; it's obviously the common notation in the modern world.
However, if we could change what became the common notation, would there be a better choice?
I'm aware that it very ...
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votes
0answers
18 views
Notation for Space of Multilinear Functions
I'm in doubt if there is some "standard" notation for the space of multilinear functions on the cartesian product of $p$ vector spaces $V_i$ with values in another vector space $W$. I have seem for ...
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0answers
41 views
Frequency of Math Symbols [duplicate]
Does anyone know of a study that has calculated the frequency of math symbols based on some popular mathematics journals or math corpus?
For example in English you have letter frequencies of the most ...
4
votes
2answers
100 views
Frequency of Math Symbols
Does anyone know of a study that has calculated the frequency of math symbols based on some popular mathematics journals or math corpus?
For example in English you have letter frequencies of the most ...
1
vote
1answer
52 views
what does z subscript something mean
Decide a positive integer $N \in\mathbb Z$. Generate a uniformly distributed random positive integer sequence:
$$v_1, v_2, \ldots,v_n\in\mathbb Z_N$$
My question is, what does $\mathbb Z_N$ really ...
2
votes
1answer
35 views
Any name for an isosceles triangle sides
Is there an English translation for Finnish words kanta and kylki? Namely, if $ABC$ is an isosceles triangle with $AB=AC$ then $BC$ is kanta in Finnish and $AB$, $BC$ are both kylki.
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1answer
15 views
What is being maximised in the channel capacity formula?
The channel capacity formula is given as such:
$$C=\max_{p(x)}I(X,Y)$$
Does this mean that it is the maximum probability multiplied by the mutual information, or is something else being maximised ...
1
vote
3answers
50 views
Difference between $\land$ and braces
I was wondering what are the difference between the $\land$ and $\begin{cases}
\\
\\
\end{cases}$ symbol. As I know, they both mean "and". So far, I've noticed the $\land $ on statements (not sure ...
