49,132 reputation
463135
bio website linkedin.com/pub/…
location Illinois
age 39
visits member for 3 years, 5 months
seen 6 hours ago

I'm a mix of things, a physicist by education, I earn my living as a mathematician and programmer working at Wolfram Research. I thoroughly enjoy learning and discovery process.


“Technical skill is mastery of complexity, while creativity is mastery of simplicity”
— Erik Christopher Zeeman

Project Euler


1d
revised seems easy set problem
added 5 characters in body
2d
revised $\int\limits_{\mathbb{R}} e^{-|x|}e^{-ix\xi}dx$
Fixed English
Oct
13
revised Limit with logarithms (no l'Hospital)
added 7 characters in body
Oct
9
reviewed Close Dihedral groups
Oct
9
reviewed Close Algebra: How to solve for a variable
Oct
9
answered Convergence in distribution - using moment generating function
Oct
9
reviewed Close Find the z- transform of y [n] and its region of convergence (ROC)
Oct
9
reviewed Close Is the Gamma Function a jointly sufficient statistic?
Oct
9
reviewed Close Lattice Properties Challenge
Oct
9
reviewed Close If you have two envelopes, and …
Oct
8
reviewed Close Set of zeros of derivate - Lebesgue measure
Oct
8
reviewed Close If $a,b$ are positive integers such that $\gcd(a,b)=1$, then show that $\gcd(a+b, a-b)=1$ or $2$. and $\gcd(a^2+b^2, a^2-b^2)=1$ or $2 $
Oct
8
comment Convergence in distribution - using moment generating function
The problem boils down to evaluating $\lim_{n \to \infty} n \ln\left(1 + \frac{\alpha}{n} + \frac{\beta}{n^2}\right)$ for some $\alpha$ and $\beta$. Can you handle this?
Oct
8
revised Convergence in distribution - using moment generating function
edited body
Oct
8
revised Expectation of truncated Poisson Distribution
added 57 characters in body
Oct
7
comment A Cosine Integral
Assume the intended meaning of 'value' is 'closed form expression', what makes you believe it might have one?
Oct
5
comment Maximizing $ P\{X=Y\}$ where $X$ and $Y$ are Binomial
Here is the link to the Lindvall's book on amazon.
Sep
30
awarded  Refiner
Sep
30
awarded  Explainer
Sep
30
answered Expressing $1 + \cos(x) + \cos(2x) +… + \cos(nx)$ as a sum of two terms