Mathematics

Associated with Math.SE; for both general discussion & math qu...
May 28, 2020 11:05
is $\odot$ suitable for this? I have some vague sense that I've seen it used like that, but I can't find any evidence for it. Any help would be greatly appreciated.
May 28, 2020 11:03
Something like $\textit{foo}(\odot, n) := \{m \mid m \odot n\}$ for all $\odot \in \{>, <, =\}$
May 28, 2020 11:00
I want to write a definition for something that can include any of a few operators in a specific place and I need a symbol that is commonly used as a stand-in for an operator.
May 28, 2020 10:58
Hey everyone, I was wondering if I could ask a very quick question here that I can't seem to find an answer to. (My google fu is letting me down big time)
Dec 17, 2017 12:13
but does anyone know of a sensible way to evaluate how positive/negative someone is about something given the number of positive, negative and neutral statements about it?
Dec 17, 2017 12:11
Hey all, I'm not sure if this is an appropriate place to ask about this
Dec 13, 2017 18:35
Thanks
Dec 13, 2017 18:35
@Semiclassical I'll look that up
Dec 13, 2017 18:35
I'd very much like to solve it myself, so if anyone could give me a push in the right direction, without having to write down the full answer, I'd really appreciate that.
Dec 13, 2017 18:33
0
Q: How can I calculate the determinant of this type of matrix?

overactorGiven the matrix $$ A = \begin{bmatrix} 1&1&1&1\\ a&b&c&d\\ a^{2}&b^{2}&c^{2}&d^{2}\\ a^{3}&b^{3}&c^{3}&d^{3} \end{bmatrix} $$ How can I prove that $\det(A)=(d-c)(d-b)(d-a)(c-b)(c-a)(b-a)$ ? And as a second question, what is the general formula for this type of matrix and how can I prove i? ...

Dec 13, 2017 18:33
Hi all, I just asked a question on the main site about determinants:
 

 The 2nd Monitor

General discussion about codereview.stackexchange.com - Welcom...
Dec 5, 2017 06:46
@Vogel612 mainly because I felt like a beginner writing it.
Dec 4, 2017 21:52
And now I've got to go to bed, I've got university to attend tomorrow :)
Dec 4, 2017 21:51
I posted my question
Dec 4, 2017 21:01
I'm writing it out :)
Dec 4, 2017 20:59
maybe I meant misusing?
Dec 4, 2017 20:58
@SimonForsberg I mainly want people to tell me that I'm abusing all of those features (if I am).
Dec 4, 2017 20:55
I haven't written much of it at all, but I did use some intermediate Haskell features and the relatively expansive size of the questions makes it feel weird to add the beginner tag
Dec 4, 2017 20:53
@SimonForsberg That's basically how I feel.
Dec 4, 2017 20:52
My question is in HASKELL
Dec 4, 2017 20:52
@SamOnela Not as relevant as I had thought.
Dec 4, 2017 20:51
I'll read the linked question and think over whether it's appropriate
Dec 4, 2017 20:50
@SimonForsberg Could that vary from question to question?
Dec 4, 2017 20:43
What qualifies as a beginner to a language?
Dec 4, 2017 20:37
I'll get started on writing the question then
Dec 4, 2017 20:36
(basically)
Dec 4, 2017 20:36
@Mast It's one function with supporting data structures and functions
Dec 4, 2017 20:35
@SimonForsberg It does, thank you
Dec 4, 2017 20:33
I've got a bit over 160 lines of Haskell code that I'd like to share with the site, does that seem excessive for one question?
Dec 4, 2017 20:33
Good monking everyone!
Oct 22, 2017 13:13
And there are about three separate things that take getting used to I think
Oct 22, 2017 13:13
@Mast It does, but have you looked at the code?
Oct 22, 2017 13:10
I must say, I find implicit returns a bit strange in an imperative language
Oct 22, 2017 13:09
since there is not one right way to do things
Oct 22, 2017 13:08
I've heard Ruby is more forgiving than python
Oct 22, 2017 13:08
I just wanted to say the same thing
Oct 22, 2017 13:01
I've been meaning to get around to learning Ruby, god knows if I ever actually will.
Oct 22, 2017 12:52
Not that I have mastered German entirely now, but it's gotten a lot better.
Oct 22, 2017 12:52
I had to do customer support in my job at the beginning, I absolutey hated it. partly because I hadn't really mastered the language yet though.
Oct 22, 2017 12:45
That does sound a bit dull in the long term :)
Oct 22, 2017 12:43
Are you happy with the work so far?
Oct 22, 2017 12:42
That sounds really cool, congrats!
Oct 22, 2017 12:37
What kind of job is it?
Oct 22, 2017 12:37
Also not bad, I started university a bit over a month ago. I should be writing a paper right now, but apparently I'd rather pester people on codereview with my terrible Java code.
Oct 22, 2017 12:35
How have you been?
Oct 22, 2017 12:34
@Phrancis likewise
Oct 22, 2017 12:33
It's probably also too all over the place to comfortably fit in one question.
Oct 22, 2017 12:32
The problem is that while I think it was an interesting excercise, the only really appropriate reaction to it is something like: "Why would you do something like that?"
Oct 22, 2017 12:28
The thing I'd like to ask about is the code I wrote in Java to make the following be compilable and act as you'd expect: