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seen Jul 9 at 8:16

Financial mathematician-beginner.


Feb
13
suggested suggested edit on How I got this answer
Feb
12
comment Meaning of Clo(A), Int(A), Rint(A)
Actually, thinking about it - why is optimalisation bad?
Feb
12
accepted Meaning of Clo(A), Int(A), Rint(A)
Feb
12
comment Meaning of Clo(A), Int(A), Rint(A)
Thanks! Well the text is in Czech and optimalisation is my translation, so that would be mistake on my part, but as for the usage of those terms, you're right!
Feb
12
asked Meaning of Clo(A), Int(A), Rint(A)
Feb
12
comment How to verify that a basis is indeed a basis? (and Vector Spaces)
Related: math.stackexchange.com/questions/123448/…
Feb
11
comment Formula for calculating parking time
Just as a thought, I'd imagine converting to a 24-hour system might be helpful.
Feb
11
accepted How to check for division ring's definition.
Feb
11
revised How to check for division ring's definition.
added 19 characters in body
Feb
11
comment How to check for division ring's definition.
Ah, here's for the beginner's mistakes. Thanks.
Feb
11
comment How to check for division ring's definition.
Uhm, I meant once again with modulo $3$, or am I missing something? If not then I'll add that to the question.
Feb
11
asked How to check for division ring's definition.
Feb
10
comment how do I find the inverse of this matrix?
Probably yes. You wrote ${8e^{9^t}}$ and probably meant ${8e^{9t}}$. Do learn to use Mathjax notation!
Feb
10
answered how do I find the inverse of this matrix?
Feb
10
comment Online MathJaX editor
@littleO look at my new answer to this question, the site I am linking might be able to do that, I think that in the introduction it mentioned something about posting it to a blog.
Feb
10
accepted Online MathJaX editor
Feb
10
answered Online MathJaX editor
Feb
10
answered Equation of a line…
Feb
9
comment Probability - when there is an argument between experts?
Definitely leave this here, it is a valuable extra piece of insight into the question, if nothing else. Even if the OP cannot use this, somebody else (i.e. me) can.
Feb
9
comment Prove that the nxn all 1 matrix (apart from diagonals which are 0) has -1 as an eigonvector with multiplicity n-1
Yes, that is a good way how to look at it. Depending on your definition of (algebraic/geometric) multiplicity, you might have to do a slightly different proof. But since we can row-reduce, we for example know that the nulity of the matrix (the dimension of the nullspace) is $n-1$.