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Financial mathematician-beginner.


May
26
comment Convexity of $\sqrt{x^2+y^2}$
Thanks, that indeed is a quick and efficient way, if one knows this property of norms. Given the background though, this is definitely not what the examiner would expect the person to answer, so I'd guess there still has to be another way.
May
26
asked Convexity of $\sqrt{x^2+y^2}$
Mar
2
awarded  Nice Question
Feb
27
revised How to find the intersection of the $\mathcal R(A)$ and $\mathcal R(A^*)$
added latex - edit, sorry
Feb
27
suggested suggested edit on How to find the intersection of the $\mathcal R(A)$ and $\mathcal R(A^*)$
Feb
14
comment when to use sine vs cosine vs tangent
SOH CAH TOA helps a lot to remember the rules, btw (just say it out loud a few times, shouting like a kendo fighter and you will never forget them, ever)
Feb
13
revised How I got this answer
Corrected tags. Unsure about puzzle.
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!