@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.
@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.
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 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.
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.
@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.
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.