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I'm doing my PhD in Computational Mathematics, Linear Algebra and Visualisation in Australia. Basically, I spend a lot of my day trying to find out what space I am in.


Jul
18
awarded  Yearling
Jun
14
reviewed Approve suggested edit on How could I find the partial sum of this function?
Jun
14
reviewed Leave Open For which $n$ is $ \int_0^{\pi/2} \frac{\mathrm{d}x}{2+\sin nx}= \int_0^{\pi/2} \frac{\mathrm{d}x}{2+\sin x}=\frac{\pi}{3\sqrt{3\,}\,}$?
Jun
14
reviewed Approve suggested edit on Coefficient of polynomials
Jun
13
reviewed Close Alternative Proof of Infinitely Many Primes?
Jun
11
reviewed Close limits involving greatest integer function
Jun
8
comment I was wondering if there was a way to plot a vector field and a 3d surface in the same window
I think @Anon means the hold function in matlab.
Jun
8
reviewed Leave Open $AB-BA$ is nilpotent matrix
Jun
8
reviewed Approve suggested edit on Probability of $k$ given objects from random permutation belong to the same cycle
May
30
comment What does a dot in a circle mean?
I have seen it used to define simple "non-standard" operators when learning group theory so that there is no confusion with $+$ or $\times$. e.g. $M\odot v=Mv+(v^TMv)I$ is something that I remember as an example. The context of your book should clarify it though.
May
25
reviewed Approve suggested edit on Poisson summation formula for the Casimir effect
May
25
reviewed Approve suggested edit on Multiplying an infinite sequence
May
25
reviewed Edit suggested edit on Prove that random variable has exponential distribution
May
25
revised Prove that random variable has exponential distribution
Expressions in latex and corrected spelling
May
24
comment inner product question <,>
In that case, I don't think that you can conclude that $u=a$. If $\langle u-a,v\rangle=0$ for all $v$, then this would require $u-a=0$. If $v$ is fixed, then $\langle u-a,v\rangle=0$ gives that $u-a$ and $v$ are orthogonal. In this case, you can't conclude that $u-a=0$. Note that I have assumed $a$ is also fixed, but $u$ can be chosen.
May
24
comment inner product question <,>
Is this supposed to be true for every $v$, or a particular $v$?
May
24
reviewed Approve suggested edit on Requesting feedback on attempt of proving bijectiveness.
May
20
answered Find the standard matrix for the linear transformation T?
May
20
comment Find the standard matrix for the linear transformation T?
@Tharindu If $\theta$ is the counter clockwise rotation (standard), then $\alpha=-\theta$ is the clockwise rotation.
May
19
comment MATLAB Newton non-linear equation
Cross post: scicomp.stackexchange.com/questions/11654/…