@Pickett yes, I was looking there and I've posted but there isn't much activity, certainly not in financial areas and not compared with sx :-( well, I'll see if it arouses any interest.

@fairflow, @RolfMertig has made some great jobs with MMA and account

hello can someone answer me linear algebra question

@Karlo Hi. In general the chat is not for questions but the main site is! And if you have indeed a small problem or need an opinion, then don't ask whether you can ask. Just shoot and see whether someone answers.

If linear operator maps from V to V

@Karlo Are you looking for the math chatroom? This is not it.

I see you asked questions there as well.

V to V' and we pick basis for V it's matrix will have dim=n and the other space will have dimension n in and only the vectors of the basis are in Im(If we have one basis vector in Ker then both spaces matrices won't have equal dim)?

@Karlo You probably should ask this here:

asked no one answered :D

@Karlo Here, we use a software for doing math. We can barely add 1 and 1. Don't expect an answer!

oh ok :D

@Karlo Have you asked on Mathematics??

yes

I mean, a real question.

@Karlo But it looks like quite a conversation in the comments there.. doesn't this help at all?

well it seems not

@Karlo This is very unfortunate. Your reputation there doesn't allow for a bounty. But on the other hand it's just an hour ago when you asked. Give it some time.

yeah I know no problem

the 15 most important language to know in 2015 and mathematica, opps, I mean the Wolfram language, is not even on the list? something is wrong with this article. mashable.com/2015/01/18/programming-languages-2015 (Javascript is #2? OMG)

@Nasser "Those at the high end of the pay scale have mastered the languages that are most in demand. Which are those? We asked Doug Winnie, director of content for online learning platform Lynda. Here's his assessment:"

If someone asked me I wouldn't assess that Mathematica is one of the top 15 languages in demand by the industry either.

@Pickett Mathematica could be, but I do not think WRI is taking advantage of what Mathematica can offer. At school, may be 1% of students use or know about Mathematica, and everyone is dead sit on Matlab, even in the math dept. even though M is much better for many tasks. go figure.

@Nasser I blame the teachers for this, not WRI.

@Pickett well, teachers teach what they know. I put more blame on WRI for not making M easier to use, compared to Matlab. No easy to use debugger for example, no profiler, etc.. and many other things. WRI is putting its resources in the wrong places.

I have only started taking courses with programming in them very recently, during the last semester, but in out of four such courses I have found that I could use Mathematica in three of them. In one of the courses I had to use MATLAB but the teacher was actually apologetic since he said he preferred other languages too, but MATLAB is a language everyone can use. The teachers in three of these courses I knew Mathematica and one used it as his main tool for research.

But granted, Mathematica was never the only allowed language.

@Pickett I've taken few courses and in only one course the teacher knew and used M. The funny thing is, they use Matlab and spend hrs to do something, I can do in M in one line. But again, teachers teach what they know. And students learn what the teacher teach. It is a cycle that hard to break and WRI is not really doing anything about it. Resources in the wrong place. WRI wants to be like Yahoo or Google it seems.

Does anybody know how I can make the Attributes of a function transfer to its Inactive form?

For example, I have a function series[] which I declare to be Flat, so that series[1, series[2, 3]] is automatically rewritten to series[1, 2, 3].

I would like the same rewriting to occur with Inactive[series]. How do I make this happen?

I can't execute SetAttributes[Inactive[series], Flat] because SetAttributes expects its first argument to be a Symbol.

Forget about all this Tweet-A-Program nonsense... "Coder creates smallest chess game for computers" bbc.co.uk/news/technology-31028787

Does anyone here use the Atom editor?

There's a nice Markdown Preview package for it that handles LaTeX very well, just like StackExchange. It is the only offline Markdown editor I know that has usable and good LaTeX support.

There are a few others, but they all have silly limitations and it shows that their authors doesn't use LaTeX himself. I haven't tried the non-free ones though.

How can I rename the multiple barcharts with specific names without knowing their position?

I know I can do FrameTicks->{{{1,"this"},{2,"that"}},Automatic}

alternatively, how can i know the size of the charts such that I can then plug into the ticks?

@Szabolcs The LaTex add one for Atom is wonderful. I like it very much. It's very useful to write notes with equations.

@Szabolcs What do you use it for?

but recently the previous somehow stops working for me. I'm wondering whether you have the same problem

It says "atom.workspaceView is no longer available"