815 reputation
312
bio website
location Warsaw, Poland
age 24
visits member for 1 year, 5 months
seen Apr 15 at 19:59

Math student at Warsaw University. Huge fan of board games.


Nov
9
awarded  Yearling
Apr
2
answered How do I prove: $\cos (\theta + 90^\circ) \equiv - \sin \theta $
Feb
8
awarded  Revival
Feb
4
comment How to check if my dataset is normally distributed?
Also, what do you mean by programatically? In most environments there are functions (as in SAS, R, SPSS) or libraries (python, java) that have some kind of normality test implemented (eg en.wikipedia.org/wiki/Shapiro%E2%80%93Wilk_test)
Jan
15
comment Derivative of a sequence
Main question you should ask yourself here is "Why do I need to do this?", i.e. what would such a derrivative mean.
Jan
3
awarded  Scholar
Jan
3
accepted Convergence of sum of independent random variables.
Jan
3
comment Convergence of sum of independent random variables.
ah, the distribution. Yes, I do. Thanks alot.
Jan
2
comment Convergence of sum of independent random variables.
How do you define $\hat \mu$ ? What does "Let $\mu_{m,n}$ the law of $\sum^m_{j=n+1}Xj$" mean? @DavideGiraudo
Jan
2
awarded  Student
Jan
2
comment How come $\frac{n!}{n_1!\cdot n_2!\cdot…\cdot n_k!}$ is always an integer?
Since the formula is derrived as a number of distinguishable permutations then it certainly must be an integer.
Jan
2
asked Convergence of sum of independent random variables.
Dec
12
comment Find the laurent series
Actually try going by the route given here: en.wikipedia.org/wiki/Laurent_series. Try doing some integrations, put some work in it. Tell us where the problem exactly lies, based on yourndifficulties.
Dec
12
comment calculating points in specific distance from given point & direction
first equation gives you a sphere with radius $r$ around $(x_1, y_1, z_1)$, the second one gives you a plane orthogonal to $(x, y, z)$ and going through $(x_1, y_1, z_1)$. The intersection of these two constraints is the searched circle. Solve second equation for one variable, put it into first equation.
Dec
10
answered calculating points in specific distance from given point & direction
Dec
10
revised calculating points in specific distance from given point & direction
Improved general clearance
Dec
10
reviewed Reviewed calculating points in specific distance from given point & direction
Dec
10
suggested suggested edit on calculating points in specific distance from given point & direction
Nov
22
answered Prove that a graph is a planar embedding using Kuratowski's Theorem or prove that none exists.
Nov
18
revised Simple question: Why does $E(|X|) < \infty$ imply $E(|X|I_{|X|>a} )$ tends to $0$ as $a$ tends to infinity
improved formatting